The 463rd Hospital: Gamma Knife Center

I. Basic information

In 2003, No.463 Hospital of China People’s Liberation Army introduced the latest international body (whole body) OPEN gamma knife and MASEP-SRRS head gamma knife. The hospital is equipped with advanced 64-slice spiral CT, 1.5T nuclear magnetic resonance positioning system, dedicated network transmission, TPS treatment planning system and GMP standard cell biological detection and treatment laboratory. A research center for non-invasive treatment of tumors has been established, which is also the largest gamma knife treatment center in Northeast China so far. There are 50 beds in the ward, and more than 150 cases are treated every month. With advanced equipment, excellent technology and rich experience, the center can treat a variety of intracranial and systemic benign and malignant tumors, as well as cerebral arteriovenous malformation (AVM), trigeminal neuralgia, epilepsy and other diseases without surgery, bleeding, trauma and changing the basic shape of the human body. Especially for brain stem tumors, brain metastases, glioma, germ cell tumors, pituitary tumors, meningiomas, AVM, nasopharyngeal tumors, lung tumors, liver tumors, esophageal tumors, pancreatic tumors, lymph node metastases, etc., it has a good analgesic effect on cancer pain. And it is not limited by diabetes, hypertension, heart disease and other coexisting diseases. More than 10,000 cases have been treated, and the total effective rate is over 90%. Liaoning TV Station, Shenyang TV Station, shenyang evening news, Shenyang People’s Broadcasting and Television Station and other media have repeatedly reported that gamma knife, an "invisible knife", has achieved the purpose of alleviating pain, prolonging life, and "patients suffer less and their families suffer less". It has brought happiness to thousands of families, and with the increase of treatment times, it will certainly bring joy to more families!

The purpose of the center: to relieve pain, prolong life and enjoy a healthy life for patients with high-quality services, technologies and equipment.

Second, talent construction

(1) Staffing

There are 30 medical staff in the center, including 10 doctors, 6 technicians, 2 physicists and 12 nurses. There are 4 senior titles, 5 intermediate titles and 3 graduate students.

(2) Academic leaders

Li Chuntian, male, born in 1964, graduated from the Fourth Military Medical University with a master’s degree in medicine, chief physician and professor of Liaoning Medical College. He began to engage in radiotherapy in 2004 and is currently the director of the center. Academic posts: He is currently a member of the Precision Radiotherapy Technical Committee of China Biomedical Engineering Society, a special expert of China Anti-Cancer Association, a member of the Tumor Radiotherapy Professional Committee of the whole army, a deputy director of the Radiotherapy Committee of shenyang military area command, a standing director of the Radiotherapy Professional Committee of Liaoning Cell Society, a standing director of the Stem Cell and Regeneration Professional Committee of Liaoning Cell Society, a member of the Radiotherapy Professional Committee of Liaoning Medical Association, a member of Liaoning Anti-Cancer Association and a member of the expert database of Liaoning and Shenyang Medical Accident Appraisal Committees.

He has been a doctor for 30 years and has rich clinical experience. He is especially good at gamma-ray stereotactic radiotherapy for head and neck tumors (lesions), lung cancer, esophageal cancer, liver cancer, pancreatic cancer, mediastinal tumors and head and neck tumors. He also has in-depth research on molecular targeted therapy, biotherapy and individualized precision medicine for malignant tumors, and has treated more than 10,000 cases of systemic tumors. He has won the third-class merit twice, won four awards for scientific and technological progress and medical achievements of the whole army, edited/edited 15 medical monographs and published more than 50 academic papers.

(three) the main technical backbone

Yin Zeng, male, born in 1961, deputy chief physician. Graduated from the Fourth Military Medical University with a master’s degree. After graduation, he has been engaged in neurosurgery, and began to engage in radiotherapy in 2004, mainly responsible for gamma knife treatment of the head, such as the diagnosis and treatment of intracranial benign and malignant tumors, cerebral arteriovenous malformation (AVM), trigeminal neuralgia, epilepsy and other diseases. He is especially good at stereotactic radiosurgery for brain stem tumors, brain metastases, gliomas, germ cell tumors, pituitary tumors, meningiomas and AVM. He is currently a member of the Standing Committee of the Stem Cell and Regeneration Committee of Liaoning Cytology Society and a member of the expert database of Liaoning and Shenyang Medical Accident Appraisal Committees.

Third, medical care work

(1) Medical work

The center pays attention to the implementation of various rules and regulations, strengthens business study, insists on collective consultation of cases, organizes discussion on difficult cases irregularly, and regularly solicits opinions from patients and their families. The satisfaction of patients and their families is the gold standard to measure the quality of medical care, and the satisfaction rate of hospital spot checks is high. Insist on giving publicity lectures on cancer prevention and treatment for patients and their families every Thursday, and achieve good results. In order to meet the treatment needs of patients, the medical staff in the center always work overtime and often work late into the night. The number of patients treated has steadily increased. In the past 10 years, the center has treated more than 15,000 patients, and no medical errors and accidents have occurred. In Northeast China, the number of monthly treatment in our center is still in the lead. Actively participate in health knowledge lectures of Liaoning and Shenyang TV stations, and publicize and report typical cases in newspapers and periodicals for many times to improve the visibility of the center.

(2) Nursing work

Pay attention to smiling, warm and humanized service, and insist on providing two lunches for each patient treated with gamma knife for the head. The names of the department director, head nurse, attending doctor and responsible nurse are publicized by cards at the bedside of the hospital, and a warm reminder board is set up to make the patients feel as warm and feel as if they are at home as soon as they are admitted to the hospital.

(3) Serving the soldiers

The center strictly abides by the hospital’s "Ten Commitments" to serve the army, and is personally treated by personnel with the title of deputy chief physician or above. Since its establishment, it has treated 103 military patients and their families, and achieved satisfactory results, which has been well received by military leaders and patients.

Fourth, technical characteristics

(A) expertise

1. 63 cases of early laryngeal carcinoma were treated by gamma knife. Gamma knife therapy for early laryngeal cancer was first carried out in No.463 Hospital of PLA. Compared with surgery, it can preserve the pronunciation function and greatly improve the quality of life of patients.

2. 280 cases of brain stem tumors were treated with gamma knife. Brain stem tumor is a "forbidden area" in neurosurgery, and gamma knife therapy is an ideal treatment method. Through continuous exploration, the individualized treatment effect is satisfactory, which not only cures the disease, but also ensures safety.

3. 99 cases of massive hepatocellular carcinoma were treated by gamma knife in different target areas. In view of massive liver cancer, the dose distribution is more uniform and patients are more tolerant according to the gamma knife treatment method of dividing the target area by general radiation strip.

4. Multi-target gamma knife therapy for lung metastatic carcinoma was performed in 195 cases. After optimization and integration and simultaneous treatment of multiple target areas, the radiation damage of normal lung tissue was not significantly increased by observation.

5. Multidisciplinary cooperation in tumor.

(1) In collaboration with the Cell Therapy Center of Hematology Department, targeted immune technology (ACTL technology) based on dendritic cells infected by recombinant adeno-associated virus was carried out to treat malignant tumors. Biological therapy (CIK, DC-CIK, ACTL) formed a certain scale and had certain influence in this area;

(2) Make full use of the platform of multidisciplinary cancer consultation center;

(3) Keep close contact with experts from PLA, Air Force and Navy General Hospital and Fudan University Cancer Hospital for remote consultation;

(4) Individual gene detection of tumor and selection of the best treatment plan.

(2) New technologies and new businesses

1. Tumor biotherapy (CIK, DC-CIK, ACTL);

2. Molecular targeted therapy for tumor;

3. Individualized gene therapy based on DNA sequencing of tumor cells.

V direction of scientific research

(1) Gamma knife dosimetry study of multiple metastatic lung cancer.

Gamma knife treatment planning system can set up six target areas at most at a time. By optimizing the combination, the adjacent lesions are set as one target area, which can treat more than ten or more lesions at the same time, greatly shortening the course of treatment.

(2) Dosimetric study of brain stem tumors

The brain stem requires a very strict dose, especially the medulla oblongata, so it is necessary to strictly control the dose and formulate an individualized treatment plan.

(3) Dosimetric study of pancreatic cancer

Pancreatic cancer has a high degree of malignancy and requires a high dose, but sensitive tissues and organs such as duodenum should also be taken into account. The dose around the lesion should not be less than 48Gy and should be carefully designed.

(4) ACTL immune targeted therapy for glioma.

Sixth, the discipline orientation

There are more than 180 gamma knife centers in China, and the number of cases treated is in the top 10. Compared with similar disciplines in the military, this discipline has certain advantages in medical treatment, and it is in the lead compared with similar disciplines in the military region, but the gap in academic papers and scientific research is obvious.

Test drive of Fenglanda intelligent electric hybrid twin engine: "evolution" to Zhidian, and carry out the value-added to the end

    Since its listing in 2022, Guangzhou Automobile Toyota Fenglanda has been widely loved by young consumers because of its strength in face value, space, intelligence, power and safety. The market performance is also quite good, with sales exceeding 150,000 vehicles in a year and a half, making it one of the first choices for entry-level SUVs. In April this year, Guangzhou Automobile Toyota Fenglanda "evolved" to the depth of electricity, and launched Guangzhou Automobile Toyota Fenglanda intelligent electric hybrid twin engine. It is understood that Fenglanda intelligent electric hybrid twin-engine broke through again on the basis of the original excellent product strength, and took the Toyota 2.0L fifth-generation intelligent electric hybrid twin-engine system for the first time, equipped with a new generation of T-Pilot intelligent driving assistance system, Toyota Space intelligent cockpit, Toyota Connect intelligent interconnection and a series of high-end intelligent configurations. Let consumers enjoy the latest hybrid technology+advanced intelligent technology at the price of entry-level models. How does the upgraded Fenglanda intelligent electric hybrid twin engine carry out the value-added to the end? We will find the answer through a test drive.

   "evolution" to the electric depth, providing full-speed electric drive sense+full-temperature long battery life.

    In this test drive, from the actual driving experience, the power performance of Fenglanda intelligent electric hybrid twin-engine is satisfactory, and the power response comes more quickly. Abundant power can bring the acceleration ability comparable to pure electricity. During driving, the oil-electricity cooperation is very tacit, and the engine and motor switch or work together smoothly, without any frustration. When overtaking, stepping on the accelerator, strong power output and sustained acceleration ability will be reflected. Because the battery outputs more extra electric energy to the motor when the vehicle accelerates, the engine and the motor drive the vehicle at the same time, so the acceleration performance is better. It is understood that as the first SUV equipped with the fifth-generation intelligent electric hybrid twin-engine, the three-electric system of Fenglanda intelligent electric hybrid twin-engine has been completely innovated. By optimizing the electronic control logic, replacing the lithium battery and improving the efficiency of the motor, it has achieved stronger and more sensitive power output. The maximum output power is 144kW, which is close to 200 horsepower. At the same time, the oil and electricity cooperate tacitly, and the acceleration of 80-120km/h is increased by 15%, which perfectly balances power and efficiency. Whether it is low speed, medium speed or high speed, it has smooth acceleration and easily realizes the extension of acceleration.

    In the corner, the vehicle’s posture is steady, pointing accurately, the suspension supports the body strongly, there is no obvious shaking feeling, and the maneuverability and driving experience are very good. In addition to the road test drive, we also had a performance experience at the venue. Its minimum turning radius is 5.2 meters, and it can be easily controlled in a narrow space. On the bumpy road section made by speed bumps, there is no unnecessary shaking or swaying, and there is no obvious jumping feeling in the back row. With the space brought by the wheelbase of 2640mm, the ride comfort is ensured.

    On the basis of providing users with better driving quality and power experience, Fenglanda intelligent electric hybrid twin engine also provides higher fuel efficiency. During the test drive, during the driving test of more than 100 kilometers, the actual fuel consumption of the vehicle is 4.3L/ 100 kilometers, and the fuel consumption performance is impressive. According to reports, the fully updated three-electric system of the fifth-generation intelligent electric hybrid dual-engine system has made the vehicle more powerful and achieved lower fuel consumption. The energy loss of the high-speed motor equipped with the intelligent electric hybrid twin engine in Flanders is reduced by 19%, the output power of the "strong motor" is increased by 32%, and the fuel consumption of WLTC under comprehensive working conditions is as low as 4.58L/100km. It can travel nearly 1000 kilometers at a time, eliminating endurance anxiety and truly achieving strong power and long endurance.

    Fenglanda intelligent electric hybrid twin engine also uses the newly developed ternary lithium battery. According to reports, the power output has increased by 8%, and the miniaturization of 34% and the lightweight of 44% have been realized, which makes the battery have higher freedom of mounting. The battery of Fenglanda intelligent electric hybrid twin-engine is installed under the rear seat, which does not affect the interior seating space and trunk volume, and also has higher safety.

   Equipped with intelligent driving assistance, it is really smart and safer.

    Using intelligent system to ensure driving safety is another highlight of the intelligent electric hybrid twin-engine in Flanders. The vehicle comes standard with a new generation of T-Pilot intelligent driving assistance. It is understood that it is based on Toyota’s global user big data, based on 12.5 billion kilometers of intelligent driving zero accident data development, with the goal of "zero error", which can avoid 41% of fatal accident driving scenarios. Toyota Safety Sense 3.0 Zhixing Safety Suite is standard, which supports multi-scenario prediction. The newly created PDA predictive active driving assistance system and EDSS emergency driving stop system will greatly "pre-position" risk identification, support OTA remote upgrade, and continuously improve the intelligent travel experience. In terms of passive safety, the whole system comes standard with 7 or more SRS airbags (9 SRS airbags for high-profile models). The new GOA high rigid body based on TNGA architecture is adopted, which has higher safety and more stable driving. During the test drive, it is found that the system can accurately identify the stationary vehicles parked in front, pedestrians crossing the road or slow-moving electric cars and bicycles, and take emergency braking and other measures according to the situation to greatly improve the safety performance.

    The level of intelligence is also reflected in assisted driving. Fenglanda intelligent electric hybrid twin engine is equipped with the same intelligent driving assistance system as the flagship model. Compared with competing products at the same level, Fenglanda’s intelligent driver assistance system has the characteristics of maturity, reliability, comprehensiveness and low threshold. At the same time, adhering to the concept of "equal rights in science and technology", the smart safety technology of luxury car class is poured into compact SUV models, and the overall "smart price ratio" is better.

    It is understood that the Fenglanda intelligent electric hybrid twin engine has realized hardware enhancement, with high-precision cameras and radar sensors all over the car, and a more stable and higher-cost distributed ECU chip sensor, which has stronger perception and prediction ability. Equipped with a 5.4 megapixel forward-looking camera, the monitoring angle reaches 112 degrees, and the sweeping area is increased by 8 times; At the same time, four 1.3-megapixel cameras, four ultrasonic radars and a millimeter-wave radar with a monitoring distance of 340 meters are used. For the first time, the deep neural network DNN technology with AI algorithm is adopted, which can recognize stereoscopic images, and can cope freely in lanes with blurred or unmarked traffic lines, and the cruising duration of lanes is as high as 95%. Further strengthen and upgrade PCS pre-collision system, DRCC dynamic radar cruise control system, LTA lane tracking auxiliary system and LDA lane departure warning system, and add RSA road sign recognition auxiliary system. Two pioneering technologies, PDA predictive active driving assistance system and EDSS emergency driving stop system, are added, which can greatly "pre-position" risk identification and make travel safer. At the same time, it supports OTA remote upgrade to continuously improve the intelligent experience.

    In addition to endurance and intelligent safety, the Fenglanda intelligent electric hybrid twin engine is equipped with Toyota’s latest Toyota Space intelligent cockpit and Toyota Connect intelligent interconnection technology, bringing a number of leapfrog intelligent experiences. Equipped with 12.3-inch brand-new LCD instrument panel, 10.25-inch touch screen, panoramic sunroof, voice recognition control system, "digital key" and other hardware and functions, we are committed to creating a cooler, more fun and more user-friendly third living space for users. Fenglanda Intelligent Electric Hybrid Twin Engine offers 7 bicycle colors and 4 dual car colors, with 11 body color options, and sports models, which can better meet the diversified needs of young consumers. (Text/Li Yiding)

Tanglang Mountain: Walking through the evolutionary tree of biodiversity

editorial comment/note

With the formal completion of the demonstration section of Chaguang-Tanglangshan hiking trail in Nanshan District, it marks the completion of the first mountain and sea corridor in Shenzhen-Tanglangshan-Dashahe-Shenzhen Bay Mountain and Sea Corridor.

This is the first project that landed after the Master Plan and Three-year Action Plan of Shenzhen Park City Construction (2022-2024) was reviewed and approved by the Municipal Urban Planning Commission. With the completion of this 13-kilometer-long line, a beautiful picture of Shenzhen, a park with mountains and seas, has been formally integrated into the daily life of Shenzhen people, and citizens can enjoy the fun of trails where mountains, rivers, seas and cities are intertwined in the downtown area of Shenzhen.

For ordinary citizens, what are the highlights of this mountain and sea corridor and what are the potential "online celebrity punch points"? Recently, the late-night report group summarized a walking strategy through field interviews, which will be serialized in three days from today.

This interview was helped by many professionals in the field of wildlife protection and nature education in Shenzhen, and I would like to thank you.

Tanglang Mountain: Walking through the evolutionary tree of biodiversity

This is not only a link between natural country parks, ecological water corridors and coastal leisure belts, but also an important part of the 260-kilometer hiking trail running through Shenzhen from east to west. It is a construction model of Shenzhen’s "one ridge, one belt and twenty corridors" space planning.

This is the Tanglangshan-Dashahe-Shenzhen Bay Shanhai Corridor.

Recently, the late-night interview group joined Liu Lei and Ye Jianhua, experts in wildlife protection and nature education, at Longzhumen in Tanglang Mountain, and started this journey of exploring mountains and seas.

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▲ Aerial view of Tanglang Mountain. Shenzhen Evening News reporter Ning Jiewen photo

Longzhumen-Chaguang Entrance: Man-made landscape gradually transits to natural landscape.

Not far from the back of the Dragon Ball Gate, a crisp and loud "morning call" came from the reporter’s ear. The reporter looked up and found that a group of birds with black spots on their faces and light gray were "hard" on the Ilex tree. Teacher Ye told the reporter that this is a black-faced noise, named after it likes singing and has a black spot on its cheek. There are clusters of small red fruits on the holly tree, which is a special favorite food for birds.

Walking to an altitude of 100 meters, the plants on both sides of the mountain road are already very rich. "Look, this is the kidney fern, also known as’ stone yellow skin’. Its root has a kidney-shaped ball, which has the function of nutrient storage, rich water content and thirst quenching effect." Teacher Liu said.

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▲ The interview team interviewed along the way under the guidance of experts. Shenzhen Evening News reporter Chen Yushe

Two experts told reporters that there are two kinds of national first-class protected plants in Shenzhen, among which the hometown of Cycas Xianhu is Tanglang Mountain. It was named Cycas Xianhu because it was discovered and named by plant experts in Xianhu, but the only wild Cycas Xianhu population in Shenzhen is still in Tanglang Mountain. No wonder Tanglang Mountain enjoys a unique "Jianghu status" among plant lovers in Shenzhen.

On the stone platform beside the mountain, the reporter found a strange-looking "snail". Its body crawls slowly on the stone surface, and its shell seems to be cut off in half and covered on the body compared with the general snail shell. "This is a half slug, an interesting species between snails and slugs." Teacher Liu said.

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▲ Half a cockroach. Photo by Li Jingchuan

Not far away, a tall cone appeared in front of the reporter-this is a common native wild tree species in Shenzhen. At an altitude of 200 meters, protophytes such as ragweed leaves, Broussonetia papyrifera, Miscanthus pentaphyllum and Pu Shu gradually appeared. Most of the slopes are ferns with vigorous growth, including Pteris fournieri and Pteris australis. Pteris fournieri has feathery leaves and a sharp tail, which is very ornamental. The leaves of Dryopteris australis have a hairy touch. There is also Liriodendron chinense, which is called "Yajiaomu" by Guangdong people. It is also a native plant on Tanglang Mountain, named after the edge of its leaves is like a webbed duck’s feet. The common name of the beautiful lantana is "five-colored plum". A lantana is composed of many small flowers, with pink petals surrounding a cluster of bright yellow petals in the middle, which is the "restaurant" for butterflies and bees. On both sides of the road, there are three leaves on a branch, which is three bitter; It is Rhus chinensis with wings and a layer of salt frost when the fruit is ripe; There is also a kind of gardening flower, whose branches are born from the ground and covered with long and thin red leaves. According to Teacher Liu, this is a cockscomb bed, which is artificially "domesticated" and can be eaten by sunbirds. In addition, there are various plants such as Camellia oleifera, Wedelia chinensis, litsea cubeba, honey tree, Lygodium japonicum, water lily, Ficus crassifolia, white-backed leaves, Manjiujie, and pseudo-sweet beans. Under the guidance of experts, journalists are interested in learning how to identify them.

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▲ Cocktail-crowned jazz bed. Photo by Li Jingchuan

Suddenly, a forked-tailed sunbird flew over the treetops, attracting everyone’s attention. The fork-tailed sunbird is petite, but cool in appearance. It has an ochre-red neck, pale green wings, and a head and tail that sparkle with sapphire blue like metal. But the most special thing is its two forked, slender and sharp tail feathers; Then, a few bright tones sounded on people’s heads. The reporter looked up and found a bird with the same slender body and a yellowish green color flying between the branches and leaves. "This is a dark green embroidered bird." Teacher Liu said. After careful observation, the reporter found that it really had a circle of white eyes, like exquisite embroidery.

Tea light entrance-Honghualing: Careful observation and harvesting of natural wild interest

After walking 3200 meters along Panshan Highway, you reach the Chaguang entrance. From the Chaguang entrance to the west is a 3180-meter-long demonstration hiking trail in Shenzhen, which is the road from Tanglang Mountain to Zijian Garden.

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▲ The interview group marched on the mountain road. Shenzhen Evening News reporter Chen Yushe

From here, the interview team walked into the real mountain path. As it has just rained, the mountain road is very muddy, so you need to be very careful when walking. But the air is very fresh in the humid forest. Along the way through the litchi forest, there are beautiful purple jade plates, elegant and fragrant lotus flowers, Sapium sativum, catnip, Capparis spinosa, Ficus crassifolia and other plants. Among them, there are many lavender leaves climbing on the branches of the catnip, and the leaves have short and soft fluff, which is very beautiful. The leaves grow to the top of the branches and gradually become smaller, forming a furry "pointed tail" at the top of the branches.

On this road, the interview group met a father and son. They also came to "try early" after learning that Shanhai Corridor was officially opened. My father is a foreigner who only speaks English, while my 9-year-old son is fluent in both Chinese and English, punching cards against the map all the way, full of interest. They always call it Nature, like Wilds, and often hike the peaks in Shenzhen … After talking with them, the reporter learned that his son’s name is D.J., and he climbs mountains every day during holidays, so he can accurately identify many wild plants.

Continue to walk forward, and you will come to a flat mountain, which is the "valley wild interest" section of this hiking trail. There is no place on both sides of the road that can block the sun, but if you carefully observe the vegetation around you, you can find all kinds of insects hidden in the trees and branches. On this road, the interview team found a green Chinese broadsword beetle, which is almost integrated with grass leaves. If you don’t pay special attention, it is difficult to see it. With this experience, the interview team observed it more carefully, and sure enough, it soon discovered a Chinese broadsword gladiator with a light yellow-brown body, which played the role of "dead branches and leaves" in the grass. "Look at the mantis on Tanglang Mountain, we are in glad you came!" Teacher Liu joked. On a branch not far away, a dragonfly came flapping its wings, and its thin, transparent, vibrating golden brown wings and golden yellow back shone in the sun, which made people feel quite shocked. Teacher Liu told the reporter that this is a female Xiao Brown duckling.

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▲ Chinese knife. Photo by Li Jingchuan

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▲ Xiao Brown duckling. Photo by Li Jingchuan

On this section of the road, you can also see various insects such as Papilio microphylla with eye-shaped black spots on its gray wings, Gray duckling with black tail, Hook-winged Eye Nymphalia with hooked wing tips, stinkbug with hemp skin, wart locust, Dornier, etc. It is particularly important to note that there are some small bumps in the grass along the way, so visitors should be more careful when they see them-that is the nest of red imported fire ants. The interview team found that most of the red imported fire ants’ nests were planted with flags to remind them to take precautions, but experts still reminded everyone not to provoke these invasive species and to do personal protection.

Cross this flat land and enter the dense litchi forest in Honghualing. Interestingly, the interview team found an exquisite introduction card of skink (a lizard) on a stone by the roadside. Just as everyone stopped to read, they suddenly found a skink lying quietly beside the sign "presenting himself". "It’s sunbathing." Teacher Ye lowered his voice and told everyone. It turns out that skink, also known as a "hermit under the fallen leaves", likes to move in wet crevices or fallen leaves. Its alertness is very high. Once it senses the movement around it, it will run away quickly and break its tail to survive if necessary. Subsequently, the interview team found four skinks on this road, which shows that this area is their favorite habitat.

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▲ Shilongzi (upper left) who "shows up". Photo by Li Jingchuan

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▲ skink. Photo by Li Jingchuan

Although Honghualing is only a hill, its good vegetation and natural habitat still attract many rare wild animals and plants in urban areas. From time to time, the chirping of birds of prey such as kites and kites came from the sky, which proved that this area was their main "hunting ground". In the dense forest, if you pay attention to the observation, you can see the unique Okumo in South China-the bride of Banluo.

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▲ Spotted bride. Photo by Li Jingchuan

"Tanglang Mountain is like a vivid evolutionary tree. From gymnosperms represented by Cycas Xianhu to primate high-grade mammals represented by macaques, it fully proves the law of biological evolution: from aquatic to terrestrial, from low to high, from simple to complex." After coming down from Honghualing Mountain, Teacher Ye concluded.

Ahead is Dashahe Park, where what wonderful things are waiting for us to discover?

Expert comments

Shanhaijing in the downtown area of the city

Shanhai Corridor, with a total length of about 13 kilometers, starts from Tanglang Mountain, passes through Honghualing, leaves Zijian Garden, goes down the Dasha River and reaches Shenzhen Bay directly.   

On this ecological corridor, the first thing we walked through was a mountain with granite as the main body: Wangtianluo-Tanglangfeng-Honghualing.

In the hilly region from east to west, the typical subtropical monsoon climate environment and the three-dimensional plant community composed of secondary forests, shrubs and artificial forests have bred rich biological resources here.

There are more than 600 species of wild vascular plants here. The guide cards along the way will remind us of the appearance of animals such as macaques, leopard cats, wild boars and pythons. Birds and insects in the forest will slow you down, and at night, it will be an unexpected world.

Walking in Tanglang Mountain is like walking through the evolutionary tree of biodiversity.

The forest of Tanglang Mountain constitutes the lung of the downtown area of Shenzhen, and the abundant water creates the kidney of the downtown area. Five small rivers flowing down the valley: Jishangou, Laohuyan River, Qingquanqu, Tanglang River and Longjing River, are rare natural runoff in the downtown area, and all of them eventually flow into Dasha River.

Longjing River is formed by the confluence of the left and right branches. The source of the river and the lush forest are the paradise of Cycas fairyland, spiny black and golden retriever dogs. The gentle place is the habitat of dragonflies and fireflies; Shallow and deep pools, a large number of aquatic organisms are multiplying; The ups and downs are waterfalls splashed with water mist.

The quiet valley where Tanglang River flows, the quiet habitat breeds the dense ferns along the river bank, and the clear and pollution-free aquatic environment breeds the population of the national second-class protected plant, the water fern.

Qingquanqu is a geomantic treasure-house for local villagers, where trees are flourishing and valleys are winding. Clematis pubescens with white flowers, Impatiens in Hong Kong with yellow flowers, and Youjute with white flowers, which are surrounded by birds, outline comfortable and bright natural colors among the evergreen trees.

Laohuyan River, named after the legend of the South China tiger, is the distribution place of the largest population of Cycas in the wild Xianhu Lake. In the gentle valley, a series of livelihood projects are being built, which will be a harmonious community with clear rivers and green banks, beautiful scenery and loud books.

Jishangou is a confluence of three tributaries, with blooming flowers, evergreen pines and cypresses, and intact mountains and rivers. Seven Dongjiang column martyrs buried under the Changyuan Yu Revolutionary Martyrs Monument witnessed the beautiful new era they pursued and guarded with their lives.

Five tributaries, with the pulse of life, local flavor and fragrance of the four seasons, flow into Dasha River, Shenzhen Bay, Lingdingyang and South China Sea and Pacific Ocean in different ways.

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▲ Ye Jianhua. Shenzhen Evening News reporter Chen Yushe

Expert introduction

Ye Jianhua, member of china wildlife conservation association, public lecturer of environmental education in China of Cornell University and WWF, member of Shenzhen Wildlife Conservation Association and member of Shenzhen Botanical Society.

strategy

Enter from the entrance of Longzhumen, Longzhu Sixth Road, and walk for about 100 meters. There is a fork. In the middle of the night, the reporter chose to walk along Panshan Highway (due north) for 400 meters (it takes 8 minutes and the steps are 720) to reach Tanglangshan Country Park Management Office (there is a public toilet).

Panshan Highway walks 3,200 meters to the Chaguang entrance (it takes 1 hour and 06 minutes, and the steps are 5,300). There are two public toilets in the middle, and each toilet is equipped with a vending machine, which mainly provides drinks and snacks. Passing through a rest pavilion and Qingyun Terrace.

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▲ After walking 3200 meters along Panshan Highway from Longzhumen, you can see the road sign in the direction of Chaguang entrance and exit. Shenzhen Evening News reporter Luo Ming photo

Go 1000 meters to the north of the Chaguang entrance and you can reach the Jimu Pavilion in Tanglang Mountain, passing through the Li Pavilion, Taoran Pavilion, Daguan Pavilion, Qicui Pavilion and the 100-foot ladder. Among them, there are often macaques in the Li Pavilion and Taoranting. Because wild macaques are aggressive, tourists should keep a certain distance from them. Located at the highest point of the mountain, Jimu Pavilion overlooks Hong Kong from a distance and Shenzhen from a distance, giving a panoramic view of the beautiful scenery of Shenzhen with mountains and seas.

Go west from the Chaguang entrance and exit and enter the 3180-meter-long Shenzhen demonstration hiking trail. If you walk less than 50 meters along the hand-made trail, you will pass through a steep mountain road with a length of 400 meters. In order to prevent citizens from slipping here, a safety rope is set. After crossing a litchi forest, the first information sign will appear. Continue to walk along the litchi forest in the direction of tea light, and you will pass a wooden bridge about 2 meters long. Walk another 300 meters, and a second information sign will appear. At this time, a fork will appear. Walk 1300 meters south, it will take 40 minutes to reach Xinwu Village and Tanglangshan Nature Education Center, and it is 2250 meters away from the entrance and exit of Chaguang. Reporter’s feeling: this 1000-meter mountain road is steep, easy to fall in rainy days, with more mosquitoes and lush vegetation on both sides of the mountain road.

Walk along the direction of tea light for another 1200 meters and see the third information sign. 30 meters away is Honghualing (north and south) scenic spot. In this 1200-meter journey, we first pass through a mountainous area with flat terrain, and there is no place on both sides of the road to block the sun. But this short section is the habitat of the kite, snake carving, mimosa, red-eared snipe, black-eyed toad and other animals and plants.

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▲ mimosa. Photo by Li Jingchuan

After crossing the flat land, you will enter the dense forest, where there are stone kerbs and barges, and there are plants and animals such as skinks and capers.

After coming out of the dense forest, you will pass through a litchi forest. When walking 460 meters down the left side of the mountain road, the fourth information sign appeared, indicating that there are 520 meters left from the entrance of Chaguang. When we arrive at the entrance and exit of Chaguang Zijian Garden, there will be a large banana forest. Therefore, the official divides this demonstration hiking trail into three sections: "Lilin Banana Shadow", "Valley Wild Interest" and "Deep Forest Exploration".

A total of 18,000 steps have been taken after completing the Tanglangshan section of Shanhai Corridor. Reporter’s feeling: There are no garbage bins and water supply points from the entrance to Chaguang to Honghualing Mountain. Citizens should prepare enough water when walking and consciously take the garbage down the mountain.

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▲ Hand-painted road map of the late-night interview group walking in Tanglangshan section of Shanhai Corridor. Cartography: Li Minghe

summary

Tanglangshan Park is rich in animal and plant resources, featuring natural ecology. Here, you can enjoy the national key protected plants, such as Cycas Xianhu, Alsophila spinulosa, Aquilaria sinensis, Golden Retriever, etc. Wild animals such as leopard cat, macaque, wild boar, kite, snake carving, thrush, kingfisher and so on add vitality to the silent forest. Among them, butterflies and macaques are the most distinctive, with 31 species of butterflies belonging to 8 families, such as Papilio maculata, Papilio Paris and Papilio Jade.

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▲ Macaques on Tanglang Mountain. Photo by Luo Ming

Safety tips

Prevent snakes and red imported fire ants. Travel together, don’t "date" with wild boar alone.

Shenzhen Evening News reporter Li Jingchuan Li Minghe Luo Ming/Wen Shenzhen Evening News reporter Chen Yu Li Jingchuan Luo Ming/map

Ping An Spring Festival travel rush Traffic Police Peer | Traffic Safety Tips during Spring Festival travel rush

Spring Festival travel rush has begun.

Are you eager to go home?

There are thousands of ways to go home, and peace comes first!

Please keep this traffic safety reminder.

First, drive a qualified vehicle, and do not drive a "sick" car. Drivers must carefully check the vehicle circuit, tires, wipers, lights, steering and braking systems before leaving the vehicle, find and eliminate potential safety hazards in time, and ensure the good safety and technical performance of the vehicle. Do not drive a faulty car or a sick car.

Second, refuse dangerous driving and drive safely. Drivers of vans must not drink and drive, overload, mix passengers and goods, illegally operate, driving without a license or drive unqualified. Compared with cars, vans are taller, heavier, and have larger blind spots. Do not be too strong, and it is strictly forbidden to stop, reverse, or retrograde at will. The goods on board should be firmly tied, and the illegal carrying and transportation of inflammable and explosive dangerous goods should be resolutely put an end.

Third, refuse drunk driving and travel in a civilized way. Drunk driving will cause visual impairment, reduce the ability of judgment and operation, and easily lead to traffic accidents. During the period of Spring Festival travel rush, the traffic police department will keep the situation of "zero tolerance" for drunk driving under strict control. When friends and relatives get together, always remember to drink and not drive, and don’t take chances and try your best.

Fourth, control the speed and drive carefully. Drivers should drive strictly according to the prescribed speed, and don’t overspeed. In curved slope sections, slippery roads and bad weather conditions, you should slow down and keep a safe distance from the car in front, and beware of rear-end collision and rollover caused by too fast speed. When passing through a long downhill section, you should drive in low gear and never slide in neutral.

5. Safe and civilized driving. On the way home and back, we should overcome impatience, keep a calm mind, and prevent illegal acts that are easy to cause traffic accidents, such as road rage, chasing racing, and being strong and strong. In case of traffic jam, you should obey the command of the traffic police, and don’t change lanes frequently and occupy emergency lanes.

Sixth, reasonable work and rest, not fatigue driving. Long-distance passenger and freight fatigue driving is harmful, so you should ensure adequate sleep before driving. Strictly abide by the laws and regulations when driving, and ensure that the cumulative driving time does not exceed 8 hours throughout the day, 4 hours of continuous driving during the day and 2 hours of continuous driving at night, and stop for more than 20 minutes.

Seven, bad weather, don’t risk traffic. There are frequent snow and ice weather in winter, so you should know the weather in advance, pay attention to the traffic information and arrange the travel route reasonably. In case of snow and ice weather during driving, please slow down, increase the distance between cars, turn on the taillights and fog lights, and pass through the dangerous sections of snow and ice on the premise of ensuring safety.

Eight, a helmet area, security is always there. Fasten your seat belt when driving a vehicle. Drivers of passenger transport, tourism and private vehicles should do a good job of reminding passengers to fasten their seat belts all the time, and wear helmets when riding motorcycles and electric bicycles. Wearing a helmet correctly can protect the head, greatly reduce the direct injury to drivers and passengers, and effectively reduce the death rate of accidents.

Nine, ride a legally operated vehicle. People returning home by chartered bus should choose vehicles and drivers with operational qualifications through regular passenger transport enterprises, go through the formalities in accordance with the regulations, do not covet cheap or convenient use of illegally operated "black cars", and resolutely do not take overcrowded vans.

During Spring Festival travel rush.

Guyuan traffic police will do their best to ensure the work in Spring Festival travel rush.

Ensure that the people travel safely.

Guard everyone’s safe way home.

We are always by your side!

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In 1968, the golden jade clothes were first unearthed from the tomb of Zhongshan in Han Dynasty.

Zheng Shaozong/Wen

   The excavation of Hanzhong Mountain Mausoleum in Mancheng, Hebei Province was many years ago, when I was only 30 years old and was the only archaeological institution in Hebei Province — — The provincial cultural relics team works in Baoding, which is only 20 kilometers away from the city. Looking back on the excavation scene of that year, I can remember it vividly and vividly.

 In 154 BC, Emperor Liu Qi of the Han Dynasty named Liu Sheng, the illegitimate son, as the King of Zhongshan, where he ruled Lunu County (now Dingzhou, Hebei Province). The picture shows the schematic diagram of the Han Dynasty vassal states.

Discover an ancient tomb

   In the summer of 1968, it was the third year of the "Cultural Revolution", when Baoding’s warfare was famous throughout the country. There are nearly 40 people in the cultural relics team in Hebei Province, and they are also caught in a serious factional struggle. The leading group is paralyzed, and most people are too busy fighting between the two factions to carry out their normal work.

   One day, the Provincial Revolutionary Committee informed me and Comrade Sun Dehai to go to Shijiazhuang, the provincial capital, immediately to have important work. The next day, Zhang Tianfu and Du Rongquan, the political department of the Provincial Revolutionary Committee, met with us and said that the garrison in the city had found a huge ancient tomb in Nanling Mountain and asked us to go to the city as soon as possible to do a good job in the investigation and protection of the ancient tomb.

   On May 28th, Du Rongquan and Zhang Zuliu, director of the Political Department of the Sixty Armed Forces, rushed to the city with us. The struggle between the two factions in Baoding area is very sharp, and there are strongholds of the two factions everywhere. Because the two garrison troops each support one faction, the brand on the military vehicle has become a sign to identify the factions. We are sitting in the 212 Jeep, and the young driver is a very smart soldier. We have to change the license plate every time we walk, because the rebels only recognize the license plate but not the person, and they belong to their own faction, otherwise they will hijack the car and copy people. Almost every walk, people come out to stop and check, and almost every village has fortifications of warfare. It is very difficult to walk 200 kilometers from Shijiazhuang to Mancheng. After crossing Anguo, the car and people were detained. Several cadres in the village found that the license plate was a military license plate, but only Zhang Zuliu was wearing a military uniform. They were very vigilant and said that the group even took the car for one night. The driver quietly said to Zhang Zuliu, "We can’t let them detain the car, otherwise the consequences will be unimaginable." Zhang Zuliu also broke out in a cold sweat. "We went to the city to perform an urgent task, so please cooperate." After several twists and turns and repeated explanations, it was finally released. The group didn’t even attend to lunch, and it was near dusk when they arrived in Baoding.

Panoramic view of the mausoleum of Han Dynasty in Mancheng

   On May 29th, we arrived at the 4749 troops station in Mancheng. Take a break, that is, go straight to the site of Lingshan ancient tomb in the southwest of the county seat. The streets of the city are very depressed, and there are few pedestrians on the road because of the fighting. It’s a warm day. Looking at Lingshan from the field, it’s like a huge and majestic plush chair surrounding the main peak, and the main peak and the North and South Lingshan are like a dignified and quiet arhat, which is very solemn. We climbed the mountain path to the north of the east side of the main peak to the south of the main peak of Lingshan Mountain, and arrived at the entrance of the tunnel under construction. There were soldiers guarding the entrance day and night, and there was a military dog next to it. The project of sheltering the cave entrance at the front of Taihang Mountain has been stopped due to the discovery of tombs. We were eager to know the situation of the tomb, so we called a small warrior forum to know the whole story of the discovery of the tomb.

A major archaeological discovery that shocked the world

   It was already very hot in the city at that time, but it was still cold in the morning and evening. The garrison was still under intense construction. There was a happy track at the southern end of the main peak, which was paved when the tomb was repaired more than 2,000 years ago. This happy track twists and turns to the south to reach the foot of Nanling Mountain. The mountain is covered with thorns, chrysanthemums, cloves, Chinese Pulsatilla and low shrubs. A tunnel is dug from east to west on an exposed cliff face south of the main peak, that is, on the west side of Happy Valley Road, to build a shelter room at the front of the mountain. The company commander Kou Junlin and platoon leader Hu Chonglin are responsible for the project.

The Han Tomb in Mancheng was found behind this door.

   The soldier said that at 11: 00 midnight on May 23, 1968, he was dug to a place 2.5 meters high and 24 meters deep. After the cannon sounded, he found that a hole with a diameter of about 1.5 meters collapsed under the north of the end of the tunnel, and the collapsed rock fell into the hole along the hole. The soldiers immediately reported the news to the company. The company commander Kou Junlin rushed to the construction site from the station several kilometers away overnight, and went into the cave to investigate with the platoon leader Hu Chonglin and the soldier Cao Dianji. They tied a long rope around their waist, and the other end of the rope was led by the soldiers who stayed in the tunnel to avoid being lost in the deep hole and unable to turn around. Entering the entrance of the cave, firstly, it is a circular arch-shaped cylindrical hole, the ground is covered with big tiles, and a large number of utensils, horse skulls and dog bones are pressed under it. Further inside, it is a large-scale hole with a diameter of more than 20 meters and a height of about 7 meters, which can accommodate more than 1,000 people, just like an underground palace. When the soldiers returned to the tunnel entrance by the original road, the company commander immediately stopped the construction, assigned special personnel to guard the scene, and they were not allowed to re-enter. At the same time, they reported to their superiors by telephone.

   After listening to the introduction, we look extremely nervous and excited. What we are nervous about is the heavy workload, heavy tasks, too few people and urgent projects. I am excited that it is the first time for me to come to such a large tomb. I also feel that the cultural relics and burial are unknown and somewhat mysterious. The gold-plated bronze wok and several gold-plated vehicles with the inscription "Zhongshan Neifu" and "Thirty-nine Years" taken out by the soldiers from the tomb attracted our great attention. In 1966, I excavated the tomb of Zhongshan Wang family in the Western Han Dynasty in Sanxian Mountain in Dingxian County, and also unearthed the bronze bell and the wrong gold and silver chariots and horses in the Inner House of Zhongshan. So when I saw these artifacts, I realized that it might be a high-level noble tomb of Zhongshan State in the Western Han Dynasty. The bronze ware was cast by the inner government, which manages the daily life of King Zhongshan, and has a time, which gives us a preliminary idea.

A bronze tablet engraved with the words "Zhongshan Neifu" unearthed from Han tombs in Mancheng.

   Under the guidance of Kou Junlin and others, our party went west along the 24-meter-long tunnel, which was more than one person high. It was very damp and cold in the cave, and white steam rose along the hole. First, a soldier went down, and we also went down from the hole one after another, and landed at 1.5 meters, which is the southernmost point of the south ear chamber of Liu Sheng’s tomb, King Jing of Zhongshan.

   The huge cave is dark, and the visibility is only about 2 meters with large flashlights. Several flashlights can be gathered together to see the ground situation in the cave. We walked north along the long hole, and from time to time there was a "tick-tock" and "tick-tock" dripping sound in the dark, which was very frightening. We were afraid and nervous inside, as if we had entered another world, and we could hear nothing but the dripping sound. The underwater sound flows down from the cracks in the mountain gap at the top of the cave and drops on the cliff surface and the big tile. The most worrying thing is the sudden collapse of the cave roof or the fear that there will be a big snake in the cave to hurt people. But nothing ventured, nothing gained, no matter how dangerous it is.

The north ear room of Liu Sheng’s tomb is a storehouse for food.

   We advance cautiously from south to north, lest we step on the cultural relics under our feet. The first thing I saw was a large number of slab tiles and tube tiles, which were stacked layer by layer, which seemed to be symmetrical in the north and south. The tiles were covered with rope patterns and chord patterns. This large tile was 55 cm long and 35-mdash wide. 40 cm, arranged in an orderly way, it seems that a huge roof has just collapsed. Although it is a little messy, it can be seen that the original arrangement law is mainly symmetrical between north and south, and the middle seems to be the roof. We walked along the two sides of the cave. When we gently uncovered a small part of the tiles, dazzling golden vehicles were exposed below, including gold-plated car frames, bow caps, car covers and so on. Followed by the orderly arrangement of the horse’s head bones, these horses are buried in order, the muscles have long rotted, and now only the bones are left, but the horse’s winding head and gold-plated bodyguard are placed in front of the horse’s head, which should be conscious killing and martyrdom. About 15 meters north, all you can see are real chariots and horses, and about 5 meters north, which is equivalent to the position of the front room (aisle). In addition to the gold-plated silver ornaments of luxury cars, a large number of dog skeletons have been found, which are also covered by collapsed tiles and slabs.

   Continuing northward from the tunnel, we entered a large north-south cave room, about 15 meters long and 4 meters high. This is a huge kitchen. The cave has a slightly higher terrain. A horse head and a water stone mill were found at the entrance, and there was a huge copper funnel-shaped grinding disc under the mill. On both sides of the cave, there are iron furnaces, pottery pots, retort, and rows of huge wine jars, on which the grade of wine is written in red ink. On the lid of the jar, there is a stalactite column about 5 cm high formed by dripping water from the top of the cave, which shows that it has been formed for a long time. On the north side, there are layers of big tiles, and on the lower side, there are mountains of pottery.

Liu Sheng’s tomb room

   From then on, I returned to the cross-shaped front room and tunnel, turned to the west, passed a seepage well, and the terrain was even lower, entering a large cave with a dome top of more than 200 square meters — — Middle room. The middle room is about 6 meters high, and it is a bare frame supported by a huge wooden structure. Because the wooden frame is decayed, the big tiles on the roof fall to the inner surface of the cave, and the layers are stacked naturally and orderly. It can be seen that the house vouchers are north-south, and some precious gold, silver or gold-plated bronzes, jade articles and lacquerware are buried in the tiles in disorder. The central room is surrounded by a drainage ditch, with a square groove on the wall for installing the frame. The ground is divided into three areas: the central area, the southern area and the northern area. The west wall is exposed with a glittering snowflake stone masonry stone gate, which should be the "inner bedroom" for burying the owner of the tomb. There is also an arched cloister-shaped semi-circular cave on both sides of the stone gate, in which no important cultural relics are found, only a few pieces of pottery are found. There are many relics in the middle room. The gold-plated bronze cup (wok) taken out from the middle room is engraved with an inscription on the mouth: "The bronze wok of Zhongshan Neifu, with a capacity of ten buckets, weighs a catty, and was made in September of 39." This bronze wok became an important basis for preliminarily judging the owner of the tomb and its age.

   It took us more than two hours to make a tour of the underground palace. With the light of the flashlight, we found the original road along the west side of the stone wall of the cave, stepped on the tiles, climbed up the round hole collapsed in the south ear chamber and returned to the ground.

   Du Rongquan and Zhang Zuliu agreed on the next work arrangement and returned to Shijiazhuang in the afternoon to report. Archaeologists also began the scientific cleaning, recording and mapping work with protection as the main task that afternoon.

Schematic diagram of Liu Sheng tomb

   This tomb includes the entrance of the tomb, the tunnel, the south ear room, the north ear room, the middle room, the main room and the cloister. According to the post-survey data, the total length of the cavern is 51.7 meters, the widest point is 37.5 meters, the highest point is 6.8 meters, and the volume of the cavern is 2700 cubic meters. The whole cave floor is paved with a layer of loess bed, and the side of the bed is paved with stone strips. The official entrance of the tomb is in the east, and it forms a central axis with the tunnel, middle room and main room in the west. The structure of the tomb spreads from north to south. Because the initial excavation was from the cave in the south ear room, the tomb door was cleaned up at the end. There is a pyramid-shaped mound in front of the tomb door, which is dug under the cliff face south of the main peak of Lingshan Mountain. The tomb is 1 north by east. The entrance of the pyramid-shaped mound is circular, and the two side walls are arc-shaped. From the vault to the ground, two layers of adobe are built, with a gap left in the middle, and then poured with molten iron to form a solid iron gate, which cannot be opened to form an iron wall; The iron gate is filled with large pebbles, stones and loess, which makes it impossible for future generations to dig and enter the tomb.

   Investigators will write a special report on the results of preliminary investigation and cleaning, especially the bronze wares found in the tomb, and submit it to the provincial government. After that, it was transferred to the CPC Central Committee and Premier Zhou, and finally to Guo Moruo, president of China Academy of Sciences. According to Premier Zhou’s instructions, Guo Moruo sent Hu Shouyong from China Academy of Sciences, Wang Zhongshu from the Institute of Archaeology and Lu Zhaoyin and his party of 13 people to Mancheng and Hebei Provincial Cultural Relics Team to form an excavation team on June 26th to clean up the tomb.

Guo Moruo visited the excavation site.

Guo Moruo (first from the left in the front row) is at the archaeological site of the Han Tomb in Mancheng.

   During the excavation of Liu Sheng’s tomb, Guo Moruo received a report from Hebei provincial government to the State Council. According to a large number of bronzes with the inscription "Zhongshan Neifu" unearthed in the tomb and the contents of "34 years" and "39 years" in the inscription, he first pointed out that this is the tomb of Zhongshan State in the Western Han Dynasty, and that only Liu Sheng, the first generation of Zhongshan King, was the king of Zhongshan State for more than 39 years, and then determined that this tomb was the tomb of Liu Sheng, the king of Zhongshan Jing in the Western Han Dynasty. While making a scientific conclusion on such a crucial academic issue, Guo Lao also gave instructions on relevant details. Shortly after Liu Sheng’s tomb was opened, according to Premier Zhou’s instructions, he went to the city to inspect and guide himself, regardless of his age and long journey, especially the danger of the warfare during the "Cultural Revolution" at that time.

   On July 21, the day before Guo Lao visited the city, the resident troops and archaeological teams received a notice: "Guo Lao is coming!" The excavation site and barracks apartment are boiling, and everyone is immersed in a very happy atmosphere like a holiday. According to the order given by Premier Zhou to the local garrison two days before Guo Lao came: "Guo Lao will visit the archaeological excavation site in the city, and the garrison will be responsible for the security work along the way." A sentry post was set 50 meters on both sides of the road along the way and escorted to the city.

   At 6 o’clock on the morning of July 22nd, Guo Lao and his party set off from Beijing, made a short stop in Baoding at 9 o’clock, and then went all the way to the army barracks in Mancheng. After a short rest, they drove straight to Lingshan cemetery.

   Guo Lao changed to a jeep at the foot of Nanling Mountain, and along the rugged mountain road, the car drove all the way to the level of Happy Valley Road in front of Liu Sheng’s tomb at the top of the mountain. Our archaeologists and the soldiers who participated in the excavation lined up in two rows to wait for Guo Lao. Guo Lao walked slowly out of the car accompanied by the head of the army, said hello to everyone, shook hands with the comrades one by one and asked everyone. Comrade Lu Zhaoyin, the head of the army, introduced Guo Lao.

   Guo Lao first visited the geographical features of Lingshan, and then entered the tomb under the guidance of archaeologists. At that time, the main entrance of Liu Sheng’s tomb had not been dug, and it was necessary to enter and exit through the south ear chamber through the collapsed tunnel entrance. For the sake of safety, a wooden ladder was set at the entrance of the tunnel before Guo Lao arrived, so that the escalator could go up and down. With the help of the staff, Guo Laoshun entered the tomb by wooden ladder. From the carriage house into the aisle, through the food storage room, through the middle room, and then into the main room and cloister, Guo Lao watched us and explained. The temperature inside the cave is very low, and Guo Lao and our staff are all wearing cotton coats. Guo Lao read it very carefully, and put forward academic opinions every time he finished reading it, especially the bronze wares with inscriptions unearthed in the tomb, and put forward the interpretation methods and meanings one by one. When visiting the main room where Liu Sheng was buried, he was very careful. He pointed out: "Liu Sheng is a vassal, and the burial system is the most noble. Liu Sheng, dressed in gold and jade clothes, confirmed the authenticity of the gold and jade clothes recorded in Historical Records, the Book of the Later Han Dynasty and other records for the first time, which has very important scientific value. " Guo Lao gave detailed instructions on the recording, mapping and photography of the archaeological site, and also put forward suggestions on using infrared film to shoot the stone wall of the main room.

   Guo Lao watched the North and South Lingshan Mountain, the main peak of Lingshan Mountain and the ancient road of Lingshan Mountain with great interest. While watching it, he also reminded everyone that "after the death of princes and nobles in the Han Dynasty, there was a system of repairing temples and trees", and quoted the examples of Taishique in Dengfeng, Henan Province and Gaoyique in Ya’ an, Sichuan Province. "There should be temples on this Lingshan Mountain. Have you found any remains?" Everyone replied that the architectural relics of the Western Han Dynasty have been discovered and are currently being studied. Guo Lao added: "There are a large number of artificial stone tablets in the north of the main peak and the junction with Liu Sheng’s tomb. If you want to check, there should be a queen’s tomb. Historical Records records that Liu Sheng had a son ‘ One hundred and twenty people ’ , "Hanshu" said he had ‘ One hundred people belong to Zizhi ’ , he ‘ Good wine and good meat ’ , and the ordinary brother of Emperor Wu, with extremely prominent position and great power, not to mention the rich Zhongshan, which is pyramid-shaped on the mountain ‘ Prince’s grave ’ It should be related to the historical records that he has many children. "It should be all his descendants."

   After visiting for about two hours, Guo Lao went down the mountain by car and left for Beijing at 4: 30 pm.

   Guo Lao’s inspection has brought great encouragement to the archaeologists. After more than 10 days of continuous work, people worked hard to clean up Liu Sheng’s tomb on August 2, and after detailed statistics, 5,509 cultural relics were unearthed.

Excavation of Queen Dou Wan’s Tomb

Changxin Palace Lantern Unearthed from Dou Wan’s Tomb

   On July 22, 1968, after Guo Lao returned to Beijing, he reported to Premier Zhou the discovery of Han tombs in Mancheng, and Premier Zhou gave instructions. Soon, the Hebei provincial government and the garrison troops received a notice from the State Council, demanding that the cave remains of Tomb No.1 be preserved in situ and the cultural relics be transported to Beijing for study, and decided that the original team would continue to excavate another tomb north of Liu Sheng’s tomb, namely Dou Wan’s tomb. On August 6th, the provincial government sent Comrade Zhang Tianfu to Beijing to study the next work, and at the same time sent a small number of people to conduct on-the-spot investigation to determine the specific location of Tomb 2. After 10 days’ rest, the excavation personnel gathered in the city on August 12. The China Academy of Sciences and the Hebei Provincial Government attached great importance to it and sent leading comrades to come. After conveying the relevant instructions of the central authorities, the excavation work was officially launched on August 13th.

   First, it starts from the north third of Tomb No.1.. There are no layered natural rocks on the slope, only rocks turned from the middle. Below the rubble is loess, and below it are the large and small stones that fill the tomb. After the layers were cleared, the top of the pyramid-shaped mound was exposed on the afternoon of August 14th. Judging from the accumulation of stones, the volume of the tomb is not too small. The arch coupons dug manually along the tomb door are cleaned downwards, and the brick and iron walls that seal the door are opened to enter the tomb. The structure in the tomb is basically the same as that in the No.1 tomb, including the tomb entrance, the tunnel, the south and north ear rooms, the middle room and the main room. Liu Sheng’s pyramid-shaped mound gate and Dou Wan’s pyramid-shaped mound gate are almost on the same level.

   The excavation of Dou Wan’s tomb began at 8: 30am on August 13th, 1968 and ended on September 19th, with 5,124 cultural relics unearthed.

   From the discovery of Tomb No.1 on May 23rd to the end of the excavation of Tomb No.2 on September 19th, the excavation of Liu Sheng and Douwan tombs lasted for 111 days. During the period from August 3rd to 12th, there were 10 days of rest and 101 days of actual field work.

Uncover the mystery of golden thread and jade clothes

Unearthed site of Liu Sheng’s tomb.

   The cultural relics buried in the Han tombs in Mancheng are extremely rich, with more than 10,000 precious cultural relics unearthed from the tombs of Zhongshan Wang Liusheng and his queen Dou Wan.

   Liu Sheng and Dou Wan were both dressed in gold and jade clothes after their death. Liu Sheng was a man and Dou Wan was a woman. It’s all gold thread. Here we mainly introduce Liu Sheng’s gold thread and jade clothes.

   The main room is the most abundant burial place in Liu Sheng’s tomb, and a large number of precious cultural relics are found in the main room. Liu Sheng is wearing a golden jade garment which was discovered for the first time in China. It comes out of the coffin of the main room. As far as the whole tomb is concerned, the main room is in the center of the whole tomb and belongs to the hidden coffin.

   On July 12th, the stone gate of the main room was opened. When archaeologists first saw such a strange burial suit woven with gold wire and shiny jade pieces, everyone gave a sigh unconsciously. Wow! I almost jumped for joy. For a group of archaeologists, some of us have been engaged in archaeological work for decades and have never seen such luxurious burial clothes. Everyone only knows from Records of the Historian, Hanshu and other relevant records that the emperors and princes of the Han Dynasty wore gold and silver jade boxes or jade boxes for burial after their deaths, but never saw the real thing. According to the cultural relics reports, before liberation, archaeologists unearthed jade pieces in the Western Han Tomb in Wang Lang Village, Handan. At that time, it was called "Zhu Li Shi" in "Mozi Festival Funeral". Everyone said in unison, "This important discovery is bound to cause shock at home and abroad."

   As a personal form, jade clothes are complete, including head, trunk, limbs, hands and feet, etc. The deceased was lying on his back in jade clothes, and his head was covered with a rectangular gold-plated jade-inlaid copper pillow. Put your hands on your lower abdomen, hold Yuhuan in your left hand and Yugui in your right hand. Cover the genitals with a round jade jar. There is a jade plug in the anus. There is a long-handled iron ring knife on the left side of the jade garment, and there is a gold belt on the side of the knife. There are two handles of jade tools and iron swords on the right side of the jade clothes. A large number of jade articles and weapons were buried between the coffins on the right side of the jade clothes. These are all things that the deceased carried with him before his death.

   Liu Sheng’s jade clothes, when cleaning the back room, were covered with a layer of rotten wood and patent leather due to the collapse of the slate at the top of the room and the collapse of the coffin. After gently removing the paint skin and rotten wood board ash with a bamboo stick and a brush, I found this golden jade garment made up of gold wire and jade pieces. The corpse of the owner of the tomb has been decayed for a long time, which has turned the jade garment into a 1.88-meter-long flat body composed of jade pieces. The head, coat, trousers, gloves and shoes have been deformed. Some gold wires with jade pieces have also been broken. Clean up and reinforce at the same time. Clean up the numbering, drawing, photographing and recording one by one at that time. If it has been found that the position is wrong, it should be restored to its original position, and the gold wire and jade piece should be reinforced one by one. So that all the parts of it are no longer loose and disorderly. Draw a large map on the spot. Mark the numbers on the drawing one by one, and take photos and records with the cleaning. But it is more detailed about the front. However, the back of the jade garment is still under pressure and technical work cannot be carried out. So do it indoors after taking it off.

The staff is at the archaeological site of the Han Tomb in Mancheng

   The method of taking it is to adopt the method of self-made metal wire mesh and dish out. According to the size of the jade garment, a rectangular frame is made of iron wire with a thickness of 6 mm, which is set around the jade garment. Use thin wire to pass back and forth from under the jade clothes in vertical and horizontal straight lines, and tighten and straighten the thin wire, so as not to be careless. Then, the two ends of the fine iron wire are twisted on the outer frame of the thick iron wire, so that the fine iron wire forms a square mesh under the jade clothes, and the jade clothes can be lifted more smoothly. In order to prevent the surface of the jade garment from being disordered during extraction, several layers of hemp paper were laid on the jade garment, and a layer of 2-mdash was poured on the hemp paper. 3 cm of plaster. After such treatment, the jade clothes become a whole, and the jade clothes can be extracted smoothly and steadily, put on the prepared mat, and spread two layers of hemp paper on the cotton with a thickness of about 5 cm, and put in a rectangular wooden box. Cover it with two layers of hemp paper, and then spread it with cotton and transport it indoors. When finishing, gently remove the hemp paper, cotton, gypsum and hemp paper in turn. Disassemble the screen, and repair the jade clothes according to the original big picture measured.

Golden wisp jade clothes unearthed from Dou Wan’s tomb (after restoration)

Golden wisp jade clothes unearthed from Liu Sheng’s tomb (after restoration)

   The shape of jade clothes is the same as that of human body, which is basically designed according to various parts of human body. Jade pieces with different shapes are used, including square, rectangle, quadrangle, polygon, trapezoid, triangle, ring wall and so on. Face, head and hand jade pieces are 1.5— 3 cm, width 1— 2 centimeters. Jackets, trousers and shoes are large, generally 4.5 cm long, 3.5 cm wide and 0.2&mdash thick; 0.35 cm.

   After each piece of Pian Yu is polished, the edges and corners are ground with hypotenuse, and holes are punched out at the four corners or around each piece, which are braided with gold wire. Jade garment is composed of 2498 Pian Yu pieces, and the weight of shared gold thread is about 1100g.

   Jade clothing is also called jade box or jade bang. According to the Records of Etiquette in the History of the Later Han Dynasty, the emperor’s jade clothes were made of gold thread, the princes and princes began to seal them, the nobles and princesses used silver thread, and the dignitaries and princess royal used copper thread. Jade clothes have been customized in the later Han Dynasty. According to the records, Liu Sheng can only use silver and jade clothes, but what actually appears is gold and jade clothes. There are only "jade clothes" and "jade sticks" in the records of Hanshu, but there is no distinction between gold, silver and copper strands. This is because it was not customized at that time.

   When it was discovered, the golden thread jade garment was flattened because of the collapse of the roof. There were no formed bones, and some comrades doubted whether there were any bones at that time. That is, whether there is a body in the original jade clothes. This problem has not been solved in the excavation site. After entering the room, it was discovered that the bones in the jade clothes had already turned into grayish brown powder due to the dissolution of groundwater and limestone, and the enamel shells of some teeth were also found inside the head. To be sure, the bones have decayed in the jade clothes, leaving only traces.

   This article is selected from the 163rd Collection of Literature and History Materials sponsored by Chinese People’s Political Consultative Conference Culture, Literature, History and Learning Committee and compiled by the Literature and History Museum of the Chinese People’s Political Consultative Conference. The article title, some subheadings and pictures are added by the editor. Zheng Shaozong, once the archaeological leader of Jehol Provincial Museum and the director of Hebei Provincial Institute of Cultural Relics.

Decoration management of Lianyungang residential quarters will be more standardized.

The author learned from the conference on the publicity and deployment of the Regulations on the Decoration and Renovation of Lianyungang Residential Quarters (hereinafter referred to as the Regulations) held on April 19 that the Regulations will be officially implemented on May 1. In the future, a written contract must be signed for building decoration activities, and it is strictly forbidden to carry out acts that affect the structural safety of buildings, and shall not endanger the legitimate rights and interests of other residents.   

The "Regulations" stipulate that if the decorator entrusts the decoration contractor to undertake the decoration project, it shall sign a written contract. If the main building or load-bearing structure is changed, the design scheme proposed by the original design unit and the examination opinions issued by the urban housing safety appraisal institution shall be submitted, and the approval procedures shall be handled in accordance with the regulations. In the specific decoration, it is strictly forbidden to implement the behavior that affects the building structure and production safety. The decorator shall post a public notice board in a prominent position in the residential area and at the decoration site, and the information such as the contact telephone number, construction time, supervision unit and supervision method of the decorator and the person in charge of the construction party. At the same time, effective measures should be taken to prevent or reduce the harm and pollution caused by waste gas, waste water, dust, vibration, noise, solid waste and construction lighting. It is forbidden to carry out noise-producing decoration in residential quarters from 12: 00 to 14: 00, from 19: 00 to 8: 00 the next day, and on legal rest days, holidays, senior high school entrance examination days and college entrance examination days. In decoration, effective measures should also be taken to avoid or reduce noise pollution to surrounding residents.   

Relevant departments and units will establish a supervision information platform for the decoration and renovation of residential quarters, and implement dynamic supervision on the decoration and renovation projects of residential quarters. In violation of the provisions of the "Regulations", the relevant departments shall be ordered to make corrections, and those who refuse to make corrections shall be given warnings and fines. Reportedly, residential quarters refer to areas where residential buildings are relatively concentrated in urban and rural areas, as well as shops, office buildings, public houses and community supporting houses that are brought into the property quarters for centralized and unified management.

2018 Spring Festival New Year’s Eve Survey: How much does it cost? Where to eat? What to eat?

  Xinhua News Agency, Beijing, February 16th Question: How much does it cost? Where to eat? What to eat? — — Survey of New Year’s Eve Dinner in 2018

  Xinhua News Agency "Xinhua Viewpoint" reporter

  For Chinese, the New Year’s Eve is the brightest "peak moment" of the Spring Festival — — All the hard work and thoughts in a year are sitting around and enjoying the delicious moment, which turns into deep affection and happiness.

  How much did you spend on the New Year’s Eve dinner in 2018? Where did you eat? What’s the food? On New Year’s Eve, "Xinhua Viewpoint" reporters investigated the New Year’s Eve of different groups all over the country.

  How much does it cost: Most people in Beishangguang are from 100 yuan to 150 yuan.

  At 7 o’clock in the evening on New Year’s Eve, a restaurant in Beijing was packed with guests, and a family raised their glasses frequently. Some individual passengers in the lobby are still waiting in line to get the number, and the waiter who is too busy to touch the ground said that there are still 8 tables waiting in line in front.

  According to the survey of China Cuisine Association, the overall booking rate of New Year’s Eve dinner this year has increased steadily compared with last year. It is expected that the catering market will achieve double-digit growth during the Spring Festival Golden Week this year. Wu Ying, deputy secretary-general of China Cuisine Association, said: "The overall price of New Year’s Eve dinner is basically the same as last year, with a slight increase."

  The reporter’s investigation found that in first-tier cities such as Beijing, Shanghai and Guangzhou, a table for 10 people is basically 2,000 yuan, and the per capita "starting price" is from 100 yuan to 150 yuan, and the highest is to 300 yuan.

  "The price has not risen this year, and the per capita cost is more than 200 yuan in 150 yuan." Wang Hongqing, deputy general manager of Tongchunyuan, a Beijing time-honored brand, said that there were more bookings of 1,888 yuan and 2,388 yuan.

  The price of New Year’s Eve in second-tier cities is not low. In Changchun, the price of the New Year’s Eve dinner package for 10 to 12 people is mostly from 800 yuan to 2,000 yuan, and the average person spends it from 80 yuan to 180 yuan.

  In some big cities, a few high-end consumers make an appointment with chefs to cook New Year’s Eve dinner. According to the number and difficulty of dishes, the per capita cost is between 400 yuan and 500 yuan in 1000 yuan.

  In addition, this year’s New Year’s Eve dinner has a new feature. "The booking of semi-finished New Year’s Eve dinner has grown rapidly." Wu Ying said that some citizens prefer to buy semi-finished products, and after a little processing at home, they can taste dishes that are not easy to cook. This year’s semi-finished New Year’s Eve dinner is expected to increase by more than 10%, and the per capita consumption is mostly from 50 yuan to 100 yuan.

  It is understood that Beijing Tongchunyuan has prepared 400 semi-finished products, including 6 meat dishes, bean bags, Huangqiao biscuits and other staple foods, with prices ranging from 288 yuan to 498 yuan; Tongheju has booked more than 800 semi-finished products, more than double that of last year.

  "In my impression, I started to go to the restaurant for dinner in the mid-1990s. Since 1995, I have never been home before 9 o’clock on New Year’s Eve. " Wang Hongqing said that in the 1990 s, each table of New Year’s Eve dinner was two or three hundred yuan, which was almost half a month’s salary of the working class.

  Zhang Fangzhong, technical director of Huajia Yiyuan’s production department, said that in the 1990s, people who went out to eat New Year’s Eve had good economic conditions. After 2000, ordinary consumers began to eat New Year’s Eve outside. At that time, the better restaurants had a table of 688 yuan and 888. The main dishes are elbow, whole fish, whole chicken and lion’s head. After about 2005, many ordinary families began to eat New Year’s Eve in star-rated hotels.

  In contrast, eating at home is more economical. Liu Yanming, a citizen of Changchun, said that he bought elbow, shrimp, fish and other high-grade ingredients and wine, and the average person counted about 70 to 80 yuan.

  On the dinner table of Zhou Duchun, a poor household in Hengnan County, Hengyang City, Hunan Province, even the raw materials came from his own home. There are bean curd made from beans in the field, fried fish, braised pork and fried chicken, totaling more than 30 yuan. The old man’s daughter and son-in-law are working outside, so they can’t go home this year. The local government sent grain, oil and rice noodles to the old man years ago.

  Where to eat New Year’s Eve: The number of people eating out is increasing, and the proportion of first-and second-tier cities is higher than that of third-and fourth-tier cities.

  According to the survey of China Cuisine Association, the number of people who choose to eat out for New Year’s Eve dinner is increasing all over the country, and the proportion of eating out in first-and second-tier cities is higher than that in third-and fourth-tier cities. In addition, popularization and popularization are the mainstream.

  In Beijing, time-honored brands and branded restaurants are favored. Some time-honored brands have to book more than half a year in advance before they can have private rooms, and they have to turn over two or three tables a night. Many repeat customers booked this year’s dinner last year. However, some people want to eat something different from usual on this day, so some ethnic catering and western food are also booked hot.

  The Pearl River Night Tour "Water New Year’s Eve Dinner" launched by Guangzhou Passenger Shipping Company allows visitors to enjoy the night view of Guangzhou while enjoying the delicious New Year’s Eve dinner.

  Calling "takeaway" at home is a prominent feature of this year’s New Year’s Eve dinner. Many take-away platforms have launched New Year’s Eve delivery services. According to the data of "Hungry" and Baidu Takeaway, in the past two or three years, take-away orders have increased rapidly during the Spring Festival, and the consumption power of second-and third-tier cities has improved significantly. The per capita consumption of Baidu takeaway has nearly doubled compared with usual, reaching 80 yuan to 90 yuan. According to the data of Meituan, in 2016 and 2017, the area with the highest single average price was Sanya, which was close to 150 yuan. The average cost of take-away orders on New Year’s Eve is nearly twice as high as usual.

  New technology adds a new color to the New Year’s Eve dinner. In Beijing Box Horse Fresh Life Yizhuang Store, the staff told reporters that many citizens choose to eat New Year’s Eve here. "Buy and eat here, the picture is fresh!" Wu Feng, a customer who lives nearby, said that the ingredients here are all small packages, just like their own "big refrigerator", which can be delivered to the door in 30 minutes at the earliest.

  The New Year’s Eve dinner on the trip and on the way home is also warm. On New Year’s Eve, at the Kaixuan Road Highway Passenger Station in Changchun, the staff delivered dumplings to the passengers. Jilin Branch of China Southern Airlines has increased on-board catering, including rice, noodles and jiaozi.

  Of course, for many people, eating the family reunion dinner at home is still the deepest expectation and enjoyment. Ms. Lai, a migrant worker who has worked in Guangzhou for more than 10 years, returned to her hometown of Meixian, Guangdong for the New Year this year. She said that her 70-year-old mother-in-law looks forward to this day every year. She has to prepare a large family’s New Year’s Eve dinner, such as chicken, pigs, fish, vegetables, rice cakes, etc. In short, she has to make up 12 dishes, which means peace in the four seasons.

  What to eat on New Year’s Eve: Traditional eating habits are still powerful.

  Due to different customs and eating habits, New Year’s Eve dinners in different parts of China have different interests and are rich and colorful.

  Cao Baoming, a folklorist and president of Jilin Food Culture Research Association, said that the New Year’s Eve dinner embodies Chinese’s long-standing annual culture, and each dish and collocation has its own unique cultural connotation. For example, in some places, there must be Chinese cabbage on the New Year’s Eve, which means "hundred treasures", leek means "long time", hot pot means "flourishing" and rice cake means "rising year by year".

  Wang Peng, manager of a hotel in Wangtian ‘e New Village, Changbai County, Jilin Province, told the reporter that many southern tourists are very interested in the special New Year’s Eve dinner in Northeast China, and book the New Year’s Eve dinner in advance, such as classic dishes such as braised vegetables in cauldron, stewed pork vermicelli, and snacks such as sticky bean buns.

  According to Alibaba’s "2018 China New Year Consumption Report", the local products with hometown flavor are mostly the favorite ingredients for New Year’s Eve dinner for consumers in various regions. For example, ham favored by consumers in East China, sausage favored by consumers in South China, sea cucumber and frozen shrimp favored by consumers in North China.

  With the continuous improvement of living standards, people have more and more dishes on the dinner table, but the power of traditional eating habits is still strong.

  In Guangzhou, traditional boiled chicken and winter melon porridge are still kept on the dinner table. "Unexpectedly, a pound of lion’s head and elbow is almost a must-have for every table." Zhang Fangzhong said that people still pay more attention to the sense of ceremony of New Year’s Eve.

  In rural Henan, jiaozi eats meat stuffing on New Year’s Eve, and jiaozi eats vegetarian stuffing early in the morning. "Everyone in the village has to eat earlier than anyone else. When you go to jiaozi, you must set off firecrackers. Before you eat jiaozi, you must eat a mouthful of steamed bread, so that you will be strong in the coming year. " Gao Yong ‘an, an associate professor at Renmin University of China, said.

  Wei Qi, a professor at the School of Philosophy and Social Development in northwest university of politics and law, said that people in their hometown should eat noodles on New Year’s Eve. Mother cooked chicken soup and rolled noodles, and then fried shredded chicken, kelp and daylily into a scorpion and poured it on the noodles. "What I miss most is the taste made by my mother." (Reporter Guan Guifeng, Liu Shuo, Zheng Tianhong, Ying Zhou, Zhang Xinxin)

Is "end-to-end" the optimal solution for autonomous driving?

  Author: Yang Zhongyang

  Recently, "end-to-end" has been on fire in the car circle! Tesla’s benchmark demonstration effect based on the "end-to-end" FSDV12 (fully autonomous driving) scheme, and the rumors of joining China, have driven companies such as "Wei Xiaoli" and service providers such as Huawei and Horizon to turn around and add end-to-end autonomous driving technology.

  The so-called "end-to-end" actually comes from the concept of deep learning, and English is "end-to-end (E2e)", which means that through an AI model, the final result can be output as long as the original data is input. When it is applied to the field of automatic driving, it means that only one model is needed to convert the sensing information collected by sensors such as camera, millimeter-wave radar and laser radar into specific operating instructions such as the steering angle of the vehicle, the stepping depth of the accelerator pedal and the braking strength, so that the vehicle can realize automatic driving. In the words of He Xiaopeng, the founder of Xpeng Motors, it is "very silky" and more like "human drivers driving".

  Previously, most autonomous driving systems on the market were traditional modular, that is, a mix-and-match system with artificial and intelligent worlds: perception relied on neural networks, and planning and control used algorithms designed manually by humans. The advantage of this system is that the division of labor is clear, and it is convenient to check and solve the defects in modules. But the problem is that this modular automatic driving system performs well in relatively simple driving tasks, and its ceiling is obvious in the face of complex driving tasks. Even the so-called advanced intelligent driving function of the city, which is far ahead, still has a sense of machinery, and it will also stop when it merges into the expressway and passes through a large intersection.

  Considering that the core challenge of autonomous driving is to solve endless edge scenes, the cost and time of solving the infinite long tail problem with limited manpower are incalculable, and data and modeling have become an inevitable trend. However, end-to-end, it is also a difficult technical job that needs careful polishing by the master.

  On the one hand, end-to-end needs massive high-quality data "feeding" training. Unlike the big language model, which can crawl a large amount of text data on the Internet for training, the cost and difficulty of obtaining video data for end-to-end intelligent driving are extremely high. Take Tesla as an example. At present, its FSD has accumulated more than 20 million human driving video clips, and the data collection cost of this scale only needs 5 billion to 8 billion yuan.

  On the other hand, end-to-end needs the support of powerful computing power. Automatic driving involves technologies and solutions such as lidar, image perception and V2X vehicle-road coordination. Powerful computing power is not only conducive to real-time processing of massive data, reducing data transmission delay, but also better supporting the whole scene for smart cities, smart transportation, high-level autonomous driving and so on. However, the computing power growth of domestic enterprises such as Huawei BU, Baidu Jiyue, Weilai, Ideality, Geely, Great Wall, Tucki, etc. are currently facing major bottlenecks.

  The problem is that the constraints of computing power and data will significantly affect the development of the algorithm. Although UniAD, an end-to-end autopilot model put forward by domestic academic circles, won the Best Paper Award of CPVR in 2023, which provides a reference direction for domestic enterprises, but UniAD developed under the open-loop verification system and small sample data still needs some engineering transformation and large-scale data training.

  In addition, the upper and lower limits of the autopilot system will be enlarged end to end. Because the end-to-end construction is a neural network black box, in the process of obtaining a higher upper limit, some of the interpretability of the traditional module scheme is transferred. How to retain the interpretability in the autopilot system and characterize the rules that should not be overstepped, such as don’t run a red light, into the neural network to ensure the end-to-end application and evolution safely, will also be an important topic for regulatory engineers.

  There are two routes to climb Mount Everest: one is the northern slope of Tibet, China, and the other is the southern slope of Nepal. Whether you choose to climb from the south slope or the north slope, you will eventually reach the same peak. This is similar to the current development path of autonomous driving. Although it is still difficult to determine that end-to-end is the optimal solution or final solution of autonomous driving, this does not hinder the innovation and exploration of enterprises. After all, end-to-end can handle extreme cases better than traditional modular methods, and it represents a more efficient way to reduce the dependence on manual coding. Based on this path, perhaps autonomous driving can lead to a higher stage. (Yang Zhongyang)

[Editor in charge:
Jin lingbing
]

Blue rainstorm warning: 11 provinces, autonomous regions and municipalities will have heavy rainstorms, and there will be heavy rainstorms in Jiangsu, Sichuan and other places.

  China Weather Network News The Central Meteorological Observatory continued to issue a blue rainstorm warning at 06: 00 on July 3:

  It is estimated that from 08: 00 on July 3 to 08: 00 on July 4, there will be heavy rains in parts of central and southern Shandong, northern Jiangsu, northern Anhui, eastern and southern Henan, northern and western Hubei, southwestern Shaanxi, Chongqing, eastern Sichuan, northwestern Guizhou, northeastern Yunnan and southwestern Guangdong, among which there will be heavy rains in southern Shandong, northern Jiangsu, southern Henan, northern Chongqing and northeastern Sichuan. Some of the above areas are accompanied by short-term heavy rainfall (the maximum hourly rainfall is 30 ~ 50 mm, and the local area can exceed 60 mm), and there are strong convective weather such as thunderstorms and strong winds.

qxtx

  Defense guide:

  1, the government and relevant departments in accordance with their duties to prepare for the storm;

  2. Schools and kindergartens should take appropriate measures to ensure the safety of students and children;

  3. Drivers should pay attention to road water and traffic jams to ensure safety;

  4, check the city, farmland, fish pond drainage system, ready for drainage.

A Survey of German Students in Zhejiang University Writing "Chinese Dream" and Riding in Wan Li

   Yue Kaihan, a German student majoring in China from Zhejiang University who graduated with a master’s degree this year, spent nearly 100 days riding a bicycle from Mohe City, Heilongjiang Province to Sanya City, Hainan Province, with a journey of more than 5,800 kilometers.On the way, he would ask the strangers he met along the way: "What is your China dream?"

  The answer he got from Wan Li Road becameHis master’s thesis — — The Chinese Dream of the Common People.

  "The school has always been very supportive of students majoring in China to get out of the classroom and books and get to know the real China through field visits. Yue Kaihan proposed to the instructor to get to know China by riding, and focused on the common people in China ‘ Chinese dream ’ Our understanding has been supported and encouraged by our teachers. The school also specially applied for the project funds for his research. " On November 27th, Lu Yuan, a teacher of China Studies Center of Zhejiang University, told The Paper.

  Exploring the "Chinese Dream" of Ordinary People by Riding

  Yue Kaihan’s Chinese name was taken by a friend. His real name is Jorg, and he is 28 years old. He came to China for the first time in 2011. In one year, he learned to use chopsticks and learn Chinese in Chengdu, Sichuan. Out of interest in China culture, Yue Kaihan went to China Center of Zhejiang University to study for a master’s degree in China in 2015.

  It is understood that the China Studies Center of Zhejiang University has started to recruit and train masters in international cooperation since 2010. Up to now, it has recruited more than 350 international students from more than 50 countries around the world. This major is designed to systematically study China’s social, political, economic and historical degree courses in English, so that students can improve their Chinese level, feel China culture, integrate into China society, and carry out research on China issues.

  Lu Yuan introduced that China studies is not limited to the classroom, but also encourages students to go deep into China society and let them contact ordinary Chinese, such as farmers and citizens. Through interviews and investigations, they find the problems faced by China society and propose solutions. To this end, on the basis of classroom teaching, each course will set up a field investigation class, and the examination is not limited to the examination paper, but more in the form of project report.

  "Yue Kaihan thought is mature, have their own ideas, action, he has been to many cities in China. Before the opening report of the paper, he proposed to the instructor to learn about China by riding. The instructor suggested that he combine the research with the topic and write the riding experience as a paper. " Luyuan told The Paper.

   Yue Kaihan said that he first heard the word "Chinese Dream" in 2013, and now it has become a high-frequency word in China.But he doesn’t know what the "Chinese dream" is in the eyes of ordinary people in China. To solve this problem, we must visit historical sites and modern buildings in China, visit cities, stop in the countryside, climb mountains and rivers, and ask questions to people of different ages and classes.He also wants to learn more about China.

  He chose cycling to get to know China, which he thought was natural, environmentally friendly and friendly, and also had high flexibility and freedom. Two months before departure, he conducted assault training, from riding 30 kilometers to 80 kilometers, and then riding from Hangzhou to Shanghai.

  In order to make the "Riding China" plan not affect his studies, Yue Kaihan completed all the postgraduate courses in one year. He also planned his cycling route very rigorously — — It spans 12 provinces (autonomous regions and municipalities directly under the Central Government) in China, with a total distance of over 5,800 kilometers. He chose Arctic Village, Mohe, Heilongjiang as the starting point of his journey, which is the northernmost place in China, and ended in Sanya, Hainan, passing through big cities such as Beijing and Wuhan, as well as historical sites such as Shaolin Temple and Yin Ruins, as well as many small towns.

   Open WeChat official account to write cycling experience.

   On May 1, 2016, Yue Kaihan took the second-hand simple folding bicycle given to him by a friend, carried a big backpack, got on the train from Hangzhou to Harbin, and then took the bus to Mohe Arctic Village.

   His big backpack is equipped with tents, inner tubes, pumps, cloth strips and other items, as well as electronic products such as mobile phones, tablets, charging treasures and cameras. There are only two sets of clothes to change.

   Before the trip, Yue Kaihan also registered on WeChat WeChat official account "Where is Brother Yue going" to record what he saw during the trip. On the day of the trip, he wrote: "If I will pass through the city where you live, please contact me. I am very happy to know your city, listen to your story, and be a couch potato in your home. "

   Every time he goes to different cities and meets impressive people, he will write these stories in WeChat official account. For example, on the 57th day of cycling, he was in the birthplace of Chenjiagou Tai Ji Chuan in wen county, Henan Province, and Mr. Li, a teacher from Tai Ji Chuan, provided him with free accommodation. During the conversation, Yue Kaihan found that Mr. Li was originally a solar engineer … …

  On the way, Yue Kaihan will focus on the differences between urban and rural areas in China, and the different concerns of young people and the elderly. He found that older people are less concerned about economic interests and have no desire to earn a lot of money. They are more concerned about the stability and fairness of the whole society. Young people will talk more about education and personal future development, and occasionally mention personal interests, fitness and other issues. The difference between urban and rural areas is obvious. People in the village want to live a happy and peaceful life, while people in the city want to do what they want.

   Asking people along the way "What is your dream of China" is a question that Yue Kaihan must ask everywhere. He repeated this question hundreds of times.

   He thinks the answer he got is very true.The "Chinese dream" of a female restaurant owner in Mohe Arctic Village is to help the elderly improve their quality of life and reduce the burden on the younger generation. A worker in Yangshuo, Guangxi dreams of a well-off and rich material life; A computer student in Changchun University hopes to realize his personal ideal and make contributions to society … …

  Yue Kaihan came to the conclusion that in the eyes of most ordinary people, the "Chinese dream" is related to the improvement of living environment, the prosperity of the country, social harmony and social reform. The "Chinese dream" of individual citizens mainly focuses on practical aspects, such as wealth, happiness, self-realization and family. Officially, the "Chinese Dream" is the rejuvenation of the whole country and nation. Even though the people are vague about the specific ways to realize their dreams, they all agree that only the rejuvenation of the nation can bring happiness to the small family.