Cctv news: The website of the National Bureau of Statistics reported on September 16 that Sheng Guoqing, chief statistician of the Urban Division of the National Bureau of Statistics, interpreted the statistical data of the changes in the sales price of commercial housing in August 2022.

　　In August, among the 70 large and medium-sized cities, the number of cities where the sales price of commercial housing fell increased, and the growth rate of cities in each line dropped or the decline expanded.

　　First, the sales price of commercial housing in first-tier cities rose slightly month-on-month, while the second-and third-tier cities turned down or the decline expanded.

　　In August, among 70 large and medium-sized cities, the sales prices of newly-built commercial housing and second-hand housing decreased by 50 and 56 respectively, increasing by 10 and 5 respectively from last month.

　　In August, the sales price of new commercial housing in first-tier cities rose by 0.1% month-on-month, and the growth rate dropped by 0.2 percentage points from last month. The sales price of second-hand houses rose by 0.2% from last month to be flat. The sales price of new commercial housing in second-tier cities changed from flat last month to a decrease of 0.2%; The sales price of second-hand houses decreased by 0.3% month-on-month, and the decline rate was 0.1 percentage point higher than that of last month. The sales prices of newly-built commercial residential buildings and second-hand residential buildings in third-tier cities decreased by 0.4% and 0.5% respectively from the previous month, and the decrease rate was 0.1 and 0.2 percentage points higher than that of the previous month.

　　Second, the year-on-year increase in the sales price of commercial housing in first-tier cities declined, while the year-on-year decline in second-and third-tier cities expanded.

　　In August, among 70 large and medium-sized cities, the sales price of new commercial housing decreased in 49 cities year-on-year, an increase of one over the previous month; The sales price of second-hand houses decreased in 61 cities year-on-year, the same number as last month.

　　In August, the sales prices of new commercial housing and second-hand housing in first-tier cities increased by 2.8% and 0.8% respectively year-on-year, and the growth rate dropped by 0.3 and 0.1 percentage points respectively from the previous month. The sales prices of newly-built commercial residential buildings and second-hand residential buildings in second-tier cities decreased by 1.0% and 2.8% respectively year-on-year, and the decline rate was 0.5 and 0.3 percentage points higher than that of last month. The sales prices of newly-built commercial residential buildings and second-hand residential buildings in third-tier cities decreased by 3.7% and 4.2% respectively year-on-year, and the decline rate was 0.5 and 0.3 percentage points higher than that of last month.

Attachment: Changes in the sales price of commercial housing in 70 large and medium-sized cities in August 2022.

　　According to the data of the seventh national census published by the National Bureau of Statistics, the resident population of Dalian City in Liaoning Province reached 5.21 million, ranking among the megacities. The picture shows the scenery of downtown Dalian. Wang Huashe (People’s Vision)

　　In recent years, Kunming, the "Spring City", has a good momentum of high-quality development, and the ecological environment of Dianchi Lake has been continuously improved. The picture shows tourists watching the red-billed gull on the ridge dam in Dianchi Lake on November 21st. Xinhua News Agency reporter Chen Xinbo photo

　　The twin-city economic circle in Chengdu-Chongqing region is located at the intersection of the "Belt and Road" and the Yangtze River Economic Belt, and is the starting point of the new land and sea passage in the west. The picture shows that on November 22nd, the Sichuan Tea Export Central Asia Special Train departed from Chengdu International Railway Port to Tashkent, Uzbekistan. Photo by Bai Guibin (People’s Vision)

　　What are the mega cities in China? What is the economic development of these cities in the first three quarters of this year? Not long ago, based on the data of the seventh national census, the National Bureau of Statistics released the "Basic Situation of the Population of Megacities and Megacities in the Seventh National Census", showing that the "Club" of megacities in China has expanded again, including 7 megacities and 14 megacities in China. These cities are also remarkable in terms of economic development. Since the beginning of this year, they have handed in brilliant answers, and the GDP of many urban areas has exceeded 1 trillion yuan.

　　Re-expansion of clubs in megacities

　　What kind of cities are "megacities" and "megacities"? The National Bureau of Statistics explained that the scale of "mega-cities" and "mega-cities" is divided according to the "Notice of the State Council on Adjusting the Criteria for Urban Size Classification" issued in 2014: cities with more than 5 million urban residents and less than 10 million urban residents are megacities, and cities with more than 10 million urban residents are megacities; The urban population of each city is the population at the standard time of the seventh census (0: 00 on November 1, 2020).

　　Previously, according to the Statistical Yearbook of Urban Construction in 2019 released by the Ministry of Housing and Urban-Rural Development, China has 6 mega cities including Shanghai, Beijing, Chongqing, Guangzhou, Shenzhen and Tianjin, and 10 mega cities including Dongguan, Wuhan, Chengdu, Hangzhou, Nanjing, Zhengzhou, Xi ‘an, Jinan, Shenyang and Qingdao.

　　According to the data of "Seventh General Plan", four new members have been added to this mega-city "Club": the urban populations of Kunming, Changsha, Dalian and Harbin all exceed 5 million. At the same time, Chengdu ranks among the megacities with an urban population of 13.34 million. In addition, Wuhan ranks eighth in the list of megacities with an urban population of 9.95 million, only 50,000 people away from the "qualification" of megacities.

　　Why does the "club" of mega-cities expand again and again? "Sycamore trees attract golden phoenix", and population migration is an important reason. During the 10 years from "Sixth General Plan" to "Seventh General Plan", a large number of young people poured into mega-cities and injected fresh blood into urban development. In recent years, cities have launched a "war of grabbing people" to attract talents to work and settle down, and various attractive settlement policies are dizzying.

　　The high-quality development of regional economy has provided more development opportunities for all kinds of talents. Not long ago, the Central Committee of the Communist Party of China and the State Council issued the Planning Outline for the Construction of Twin Cities Economic Circle in Chengdu-Chongqing Region, which set the tone for writing a new chapter in Chengdu-Chongqing "Tale of Two Cities" and strengthened the confidence of many young people to develop here. "The ancients said ‘ Less into Shu ’ I think the city of Chengdu is also very suitable for struggle. Many young people around me like the pace of life and development opportunities here. " Chai Yun, a 27-year-old Chengdu youth who returned to his hometown after graduation, said.

　　"Young people have chosen this city, and this city will also bring surprises to young people who choose her." Chai Yun believes that the high-quality development of the twin-city economic circle in Chengdu-Chongqing region will reach a higher level in the future. In recent years, with the economic and social development of Chengdu-Chongqing region, the population size and economic aggregate of the western Gemini have been rising continuously. By the end of October, 67 major projects with a total investment of 1.57 trillion yuan had been started in Sichuan and Chongqing in 2021, with a cumulative investment of 186.68 billion yuan. This time, Chengdu has entered the ranks of megacities after Chongqing, which is expected by most people.

　　Dongguan, Shenzhen is "young", and Beijing and Shanghai are aging.

　　Megacity and megacity are not just a title.

　　On the one hand, the number of urban permanent residents is an important "threshold" for urban development and construction. It is understood that according to the relevant regulations, the resident population of urban areas that are currently applying for the construction of subways should be more than 3 million. At the same time, according to the regulations of the Ministry of Housing and Urban-Rural Development and the Emergency Management Department, cities with a permanent population of less than 3 million in urban areas are not allowed to build super-high-rise buildings with a height of more than 250 meters; Cities with a permanent population of more than 3 million shall not build super high-rise buildings of more than 500 meters.

　　On the other hand, megacities have played an important role in promoting China’s economic growth. Ning Ji Zhe, director of the National Bureau of Statistics, said earlier that since the reform and opening up, first-tier cities such as Beijing, Shanghai, Shenzhen and Guangzhou, as well as other super-large cities, have witnessed substantial economic growth, a significant increase in population, continuous opening-up and vigorous development of social undertakings, which have become an important engine for China’s economic growth, an important hub for opening up to the outside world and an important support for national governance.

　　The population structure of mega-cities has a far-reaching impact on the future development of cities and has attracted much attention.

　　Which cities are the youngest? According to the data of "Qipu", the proportion of people over 60 years old in Shenzhen and Dongguan is about 5%, which is significantly lower than that in other megacities.

　　Which cities have the most "silver-haired people"? Looking at the proportion of people over 60 years old, the two first-tier cities, Beijing and Shanghai, have a high degree of population aging. Shanghai’s population over the age of 60 accounts for 23.38%, ranking second among all megacities; The proportion of people over 60 in Beijing is also close to 20%. At the same time, most of the mega-cities with a population over 60 years old of more than 20% are located in the north, among which Dalian in the northeast ranks first, and the proportion of people over 60 years old in Harbin and Shenyang is also at a high level.

　　Lu Jiehua, a professor of sociology in Peking University, analyzed that the low fertility rate is the primary factor leading to the deepening of population aging in megacities. In addition, the higher supply level of old-age services in megacities attracts the elderly to settle down with their children, and the outflow of labor force also leads to the aging of some megacities.

　　Analysts pointed out that megacities have the opportunity to turn population aging into development opportunities. Among them, first-tier cities need to pay attention to cost and service. Ning Ji Zhe said that at present, the overall level of pension and social security in first-tier cities is relatively high, and the average life expectancy is above 80 years, ranking among the best in various cities. "What needs to be improved is to control costs and improve services".

　　"While controlling costs and improving services, we should also pay attention to the imbalance in the supply of old-age services between different cities." Lu Jiehua said that in first-tier cities and other megacities with high economic and social development level, the pension level and the income of the elderly are relatively high, and the inflow of young working people has largely offset the impact of the aging population, and the supply level of old-age services is relatively high and mutual assistance is strong. At the same time, the inflow of young people in some megacities represented by Northeast China is less, and compared with the former, it is "older" and "older faster", and the problem that the supply level of old-age services does not adapt to the process of population aging is prominent. To this end, we should promote a more balanced allocation of resources for aged care services among different cities.

　　Optimize and promote the core competitiveness of mega-cities

　　Not only does it attract population focus, but mega-cities also play an increasingly prominent role in leading regional economic development.

　　In the first three quarters of this year, the GDP of seven mega-cities including Shanghai, Beijing, Chongqing, Guangzhou, Shenzhen, Tianjin and Chengdu all exceeded 1 trillion yuan. Among them, Shanghai’s GDP first exceeded 3 trillion yuan, reaching 3,086.673 billion yuan. Beijing’s GDP in the first three quarters was 2,975.30 billion yuan. It is estimated that the annual GDP of the two places is expected to exceed 4 trillion yuan.

　　In the first three quarters of 14 mega-cities, the GDP of most of them reached more than 500 billion yuan, among which the GDP of Changsha, a "new member" of this mega-city, was 958.698 billion yuan in the first three quarters, which was close to the threshold of one trillion yuan.

　　During the 14th Five-Year Plan period, how to improve the spatial layout of urbanization and optimize the function of the central city of megacities? Ning Ji Zhe introduced that the relevant planning and deployment have the following points:

　　— — Promote the high-quality and sustainable development of megacities. Including promoting the transformation of development and construction methods in megacities and strengthening the prevention and control of urban governance risks; Promote the transformation of urban development mode from scale expansion to connotation promotion; Steadily improve the level of social security and the modernization level of urban governance; Strengthen the central radiation function of megacities, better promote rural revitalization and promote urban-rural integration and development.

　　— — Reasonably reduce the development intensity and population density of megacities. Orderly deconstruct the functions and facilities of general manufacturing, regional logistics bases, professional markets and over-concentrated public resources in the central city, and strengthen risk prevention and control in urban governance.

　　— — Optimize and promote the core competitiveness of mega-cities Strengthen the global resource allocation, the source of scientific and technological innovation and the leading function of high-end industries, take the lead in forming an industrial structure with modern service industry as the main body and advanced manufacturing industry as the support, and enhance the comprehensive energy level and international competitiveness.

　　Lu Jiehua believes: "The driving force and vitality of the development of mega-cities not only comes from scale expansion, but also from structural optimization and connotation improvement." He said that in the process of promoting the high-quality and sustainable development of mega-cities, on the one hand, it is necessary to scientifically plan the urban production, living and ecological space, optimize the spatial distribution of various facilities and functions, and strive to improve the population quality while reasonably reducing the population density; On the other hand, it is necessary to provide better basic public services, solidly practice the "basic skills" of urban development such as housing, education, medical care and old-age care, improve the level of social security and the modernization level of urban governance, and provide a stable guarantee for residents to live and work in peace and contentment. In addition, we should give full play to the role of agglomeration and radiation of mega-cities to better serve the optimization of spatial pattern of economic development and regional coordinated development, and drive the high-quality economic development of China.

　　[Illustration of New Cars] It is mentioned that most of the familiar models, such as DBS, DB9, and so on, are from the design team led by Dr Marek Reichman, and his simple and elegant design style has made aston martin almost a representative of English in people’s minds. But you may not know that Zagato is also a long-term design partner of aston martin. The DB4GT Zagato, which was launched half a century ago, is regarded as one of the most collectible and expensive models in the history of aston martin. Today, aston martin and Zagato have once again cooperated to launch a global limited edition of only 150 units (Remarks: On June 28th, 2012, we received confirmation from the factory that the global limit of V12 Zagato is 101 sets!）。 However, for those friends who are used to watching the "Martin" like DBS and DB9, it may take some time to get used to the Italian flavor of this V12 Zagato.

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　　Before introducing the car, let me talk to you about what Zagato is and the background of the birth of this V12 Zagato. Zagato is a very old car design studio. Ugo Zagato is the founder of Alfa Romeo Car Factory, but he soon sold Alfa and concentrated on running his own design studio. At first, it didn’t develop cars, but its main business was to design fighters. In 1918, with the end of World War I, Italian fighter planes needed to descend, and Zagato began to develop in the direction of automobiles. Zagato designed many classic models for Alfa Romeo, such as 1500 in 1926, 1750 Grans Sport in 1929 and 2300 8C in 1931. The DB4GT Zagato mentioned in the previous article is the crystallization of the love it created together with aston martin.

　

　　The earliest design of V12 Zagato originated in early 2010. Although it was born to commemorate DB4GT Zagato, it was not a simple imitation, but a brand-new model combined with the design concept, materials, technology and technology of One-77. Its aluminum body was hand-made, while the front and rear fenders, door sills and trunk lid were made of carbon fiber. The painting of V12 Zagato’s car body is the same as that of One-77, and it takes more than 100 hours to paint the car body alone.

　

　　The body size of the V12 Zagato is basically the same as that of the V8 Vantage, but the height of the vehicle is 10mm lower than that of the V8 Vantage. The length, width and height are 4385*1865*1250mm respectively, and the wheelbase is 2600 mm. Such a body size is definitely small for a 12-cylinder super sports car. You should know that the length of Lamborghini Aventador LP700-4 is close to 4.8 meters, while that of Ferrari F12berlinetta is more than 4.6 meters.

　　The front face of V12 Zagato still retains the classic design of aston martin to a great extent, and its "convex" shape of the middle net is still the same, but the grille is no longer the chrome-plated horizontal strip style on the traditional aston martin model, and the diamond-shaped 3D shape is used instead, which reflects Zagato’s unique design. The front diverter is made of carbon fiber, and the background color of the aston martin logo is changed from the traditional black to the more sporty red.

　　The carbon fiber material and the "double bubble" roof arc design are all the differences between the side of the V12 Zagato and the traditional aston martin. At first glance, the overall feeling is familiar. The "double bubble" design of the roof is "familiar". The front fender side vent is larger in size than V8 Vantage, and it also adopts a vertical layout, and the "Z" at the back is a place to highlight Zagato’s classic design.

　　Two-color fork-shaped five aluminum alloy wheels are unique in shape, matched with P ZERO CORSA tires of front 255/35ZR19 and rear 295/30ZR19, and oversized carbon fiber ceramic composite (CCM) brake discs are adopted in front and rear to ensure the braking performance of the car.

　　If the front face of V12 Zagato still retains a strong British flavor, then its rear shape is a concentrated expression of Zagato’s design style, full of Italian sentiment. The huge, rear light cabin and rear diffuser are all made of carbon fiber to reduce the weight of the car body. Taillight abandoned aston martin’s classic C-shape, and adopted a very simple circle, the luminous material is still full. The size of the rear diffuser is huge, occupying almost 1/2 of the rear of the car. Below the license plate frame is a very racing rear taillight design.

　　Jiangxi, China Net News reporterLi XunReport: On the afternoon of 27th, an explosion-proof investigation and fire-fighting robot was unveiled by the Communist Youth League delegation in Ganjiang New District, which opened the eyes of the reporters. It is reported that this robot can climb the stairs to put out the fire, and the height of spraying water can reach up to 90 meters. It is developed and manufactured by citic heavy industries Robot Industrial Park.

　　Citic heavy industries Robot Industrial Park is a wholly-owned intelligent equipment manufacturing subsidiary of citic heavy industries Kaicheng Intelligent Equipment Co., Ltd., which was incorporated in Gongqingcheng in March 2017 with a registered capital of 100 million yuan. The total investment of the project is 1 billion yuan, covering 130 mu of land. At present, 120 million yuan has been invested. The first phase of the project has been completed, including a production center of 5,000 square meters and an experimental center of 7,600 square meters.

　　In the afternoon, the press delegation visited citic heavy industries Robot Industrial Park with great interest, and under the patient and meticulous explanation of the commentator, they had a clear understanding of the industrial park and were amazed at its high-tech research and development skills.

　　It is reported that Gongqingcheng Robot Industry Base is the largest of the company’s eight robot production bases in China, integrating R&D, production, sales and service display. Its main products include fire-fighting smoke extraction robots, investigation robots, blasting robots, underwater robots, explosion-proof fire-fighting robots, fire-fighting investigation robots, water mist robots, demolition robots, airport robots, excavation robots, railway inspection robots, underground utility tunnel inspection robots for municipal applications, and hazardous enterprise applications. Reach the production standard, with an annual output of 2,000 special robots. It is estimated that the annual main business income is about 1.8 billion yuan, and the annual tax revenue is about 230 million yuan.

For motorcycle enthusiasts, understanding the displacement of motorcycles is a very important indicator. Common motorcycles have displacement of 100, 112,150 and 175, while motorcycles with displacement above 200 are relatively few. If you have any other questions, you can continue to ask me questions.

The displacement of a motorcycle is usually expressed by CC, and 1 CC is equal to 1 milliliter (1ml), that is, 1 cubic centimeter (1cm), which is the volume of the engine. Therefore, the displacement of motorcycle refers to the volume of engine piston from bottom dead center to top dead center. If you want to know how many CC motorcycles have, you can refer to the following.

The largest motorcycle displacement in the world is 5730cc, while the smallest is 25cc. After understanding the concept of displacement, let’s take a look at the displacement of Maserati motorcycles. Maserati m157c22979cc has a displacement of 2,297.9cc, while Maserati President has a displacement of 2180-2780cc, Maserati GT has a displacement of 2180-2680cc, and Maserati GranCabrio has a displacement of 2600-2780cc. This information can help you better understand the performance and price of this motorcycle.

In addition, if you want to know the price of Maserati m157c22979cc, you can refer to the following information. According to the market situation, the price of Maserati m157c22979cc is between 21.8 million and 27.8 million yuan, while the price of Maserati President is between 21.8 million and 26.8 million yuan, the price of Maserati GT is between 21.8 million and 26.8 million yuan, and the price of Maserati GranCabrio is between 26 million and 27.8 million yuan. I hope this information can help you better understand the performance and price of this motorcycle.

Generally speaking, it is very important for motorcycle enthusiasts to know the displacement and price of motorcycles. If you have any other questions, please continue to ask me.

　　BEIJING, January 7 (Guo Peishan) The US military killed Iranian commander Soleimani in Iraq, which stirred up a thousand waves: Iran announced its withdrawal from the Iranian nuclear deal and threatened "revenge", and the United States threatened to attack 52 targets in Iran; Iraqi parliament supports ending the stationing of foreign troops, and the leaders of Britain, France and Germany urgently discuss countermeasures … …

　　In the early morning of January 3, local time, according to the statement issued by the Iraqi security department, three missiles were attacked near Baghdad International Airport, and two vehicles were blown up, killing several people.

　　Suddenly, this devastated land in the Middle East has once again become the focus of the world. "Is the Third World War coming?" It has become a public concern. Will the "powder keg" in the Middle East be ignited? How will things develop? Zhongxin. com interprets it for you.

　　1. What will be the consequences of Iran’s announcement of its withdrawal from the Iranian nuclear deal?

　　Hua Liming, China’s former ambassador to Iran, said that after the United States withdrew from the Iranian nuclear deal in 2018, Iran still abided by the agreement because of the European reaction, but with the resumption of sanctions by the United States, the agreement itself no longer existed. Now that Soleimani has been killed, Iran thinks it is unnecessary to abide by the agreement.

　　At the same time, he also believes that Iran’s approach is bound to make Europe reassess the current situation. Trump has called the leaders of Britain, France and other countries, hoping that they will support the United States. Nowadays, there may be variables in the "queue" of European countries.

　　Dong Manyuan, a researcher at China Institute of International Studies, said that the main trend of Iran’s policy is to restore the domestic economy. Although Soleimani’s death has caused staged tension between the United States and Iran, in the long run, Iran still wants to ease relations with the United States and its regional allies, so all Iran’s current actions are still reversible.

　　Second, how will the "retaliation" threatened by the Iranian authorities be reflected?

　　Li Haidong, a professor at the Institute of International Relations of the Foreign Affairs University, said that Iran has been operating in the Middle East for a long time, with many allies and great flexibility. In other words, Iran can completely attack the interests of the United States in the Middle East without coming forward.

　　At present, people’s grievances are boiling all over Iran, but Dong Manyuan predicted that the "revenge" behavior in the mouth of the authorities would be "orderly".

　　Next, American institutions in the region may often be attacked by "unknown forces", but if the United States makes subjective assumptions and implements response measures without evidence, it will lose its moral foundation in the region, thus stimulating the upsurge of anti-American sentiment in the region. In this way, Iran can achieve the goal of "long-term consumption" of the United States.

On January 5th, local time, people in Houston, USA held an anti-war rally to condemn the US military for killing Iranian commander Soleimani. China News Service reporter Zeng Jingning photo

　　Third, did the United States anticipate Iran’s reaction, and how will it respond now?

　　Soleimani is a menace to the United States, which has long wanted to get rid of him. However, Hua Liming believes that the retaliation that may be suffered now and the turmoil in the Middle East, I am afraid that Americans have not fully thought about it in advance.

　　Dong Manyuan also made a similar analysis. After the killing of Soleimani, the U.S. military wanted to "stop as soon as possible", but faced with the Iranian threat of "revenge", it could only respond with a tougher attitude. The United States says that its first strike will destroy 52 targets in Iran, which actually reflects a nervous state of mind in the United States. In fact, Trump is still worried about Iran’s retaliation.

　　Will the conflict between the United States and Iraq continue to escalate? Li Weijian, vice president of the China Middle East Society, said that although the US killing action has further deepened the hatred between the United States and Iraq, on the one hand, Trump is constrained by the election; On the other hand, Iran cannot compete with the United States alone. Therefore, both countries have a bottom line — — To prevent the situation from getting out of control to the point where the two sides are going to war, no one can afford such consequences.

Data map: US President Trump.

　　4. Why does the Iraqi parliament support stopping anti-terrorism cooperation and ending the stationing of foreign troops?

　　In 2003, the United States bypassed the United Nations Security Council and launched the Iraq war. After the withdrawal of American troops in 2011, only a scarred Iraq was left. Hua Liming said that the US military belongs to the "invading army" in Iraq, which has not brought any benefits to the local people. Recently, it even killed Iranian generals on the territory of the country, ignoring its sovereignty and territorial integrity, which is bound to cause tension between the two countries.

　　Li Haidong said that, similar to Iran, there are a majority of Shiites in Iraq, which means that the two countries are united in their values. However, for a long time, the continued destructive intervention of foreign forces in the situation in Iraq has made the authorities restrained in making relevant decisions. Therefore, facing the contradiction between the United States and Iran, Iraq is in a dilemma.

　　Why did Iraq decide to end the stationing of foreign troops? Dong Manyuan said that this move is intended to safeguard its own sovereign security, not to stop anti-terrorism operations. Today, Iraq’s top priority is to defend the country’s sovereignty, territorial integrity and security.

　　5. The situation in the Middle East has suddenly escalated. Where is the regional situation heading?

　　Dong Manyuan said that after the US military killed Soleimani, the international oil price was the first to bear the brunt, and it has risen by more than 3%. But in the long run, the impact of the conflict between the United States and Iraq on the international energy market supply situation is relatively limited, because: first, the international oil supply situation exceeds demand; Second, American protectionism has caused the overall depression of the world economy; Third, under the sanctions of the United States, Iran has actually been excluded from the international oil market.

　　Regarding the pattern changes in the Middle East, Li Weijian said that various forces will be rebalanced in the turmoil, but there will be no fundamental and subversive changes. Moreover, the future policy changes of the United States towards Iran will be closely related to the domestic situation in the United States. However, no matter whether Trump is re-elected, the relationship between the United States and Iran will not change greatly.

　　In addition, Li Weijian also believes that over the past year or so, the influence of the United States in the Middle East has weakened, and Trump’s many measures on the Iranian issue seem to have not been approved by more countries. In the future, changes in the international situation will also have more impact on the region.

    March 22nd, 2024 is the 32nd World Water Day, and March 22nd-28th is the 37th China Water Week. On the occasion of World Water Day on March 22nd, Chongqing Water Supply Co., Ltd. (hereinafter referred to as "Municipal Water Supply Company") held a series of public open days of World Water Day in 2024 with the theme of "giving priority to water conservation and promoting high-quality development".

    "Please come in" and "Go in" to promote water conservation and protection.

    On the afternoon of March 20th, the Municipal Water Supply Company launched the theme activity of "Persisting in saving water and giving priority to promoting high-quality development". User representatives from 11 enterprises and institutions, including Chongqing University, Sichuan International Studies University, Chongqing Nankai Middle School, the First Affiliated Hospital of PLA Army Medical University (Southwest Hospital), Yubei Road Street in Shapingba District, Chongqing Ronghui Hot Spring Industry Development Co., Ltd., were invited to walk into Shapingba Waterworks of the municipal water supply company, and visit the facilities in the plant, such as distribution wells, sedimentation tanks, V-type filters, sodium hypochlorite storage tanks, clean pools, secondary pump houses, etc., to learn about the technological process of making water from tap water.

    "By looking at the technological process of tap water production on the spot, I can understand the water quality guarantee measures and water supply service system of the municipal tap water company, which makes me more assured about the safety of drinking water." Mr. Wen, representative of Chongqing Ronghui Hot Spring Industry Development Co., Ltd. said.

    "Shapingba Water Plant has been put into operation since 1958 and has a history of 65 years. Since the establishment of the factory, it has closely followed the trend of scientific and technological innovation and industry development, effectively improved the city’s water supply capacity, and met the people’s demand for high-quality and healthy life. " Man Long, a member of the production department of Shapingba Waterworks, said that the current water supply capacity of the Waterworks is 200,000 m3/d, serving more than 1 million people.

    It is understood that in order to let more people know about the production process of tap water and cultivate the awareness of cherishing water resources, the Municipal Water Supply Company will also organize a "tap water school" activity, and the staff of the water plant will go into Renhe Street Primary School, Yucai Experimental School, Ertang Primary School in Sha District and Chongqing Business School to give lectures on tap water science.

    At the same time, Yuzhong District Water Plant, Heshang Shanshui Plant, Wellhead Water Plant and Fengshouba Water Plant under the Municipal Water Supply Company will carry out water supply business consultation, water quality knowledge publicity, soliciting opinions and suggestions, voluntary maintenance and other activities during World Water Day and China Water Week, so as to popularize the "Regulations on Urban Water Supply and Water Saving in Chongqing" and the knowledge of water saving and water use, and fully promote the establishment of "National Water-saving City".

    The level of water resources management has been further improved through the empowerment of digital intelligence.

    It is understood that since the expansion and transformation of Shapingba Waterworks in 2006, although some automation systems have been built, they have been in operation for 16 years due to imperfect functions at that time. In 2021, under the unified deployment of Chongqing Water Group, the municipal water supply company took the lead in carrying out the pilot demonstration construction of smart water plant in Shapingba Water Plant, mainly including the renovation of automation equipment and the pilot demonstration project of smart water plant (construction of transportation management platform).

    "This transformation completed the update of automatic control and monitoring equipment, and at the same time transformed the network to form an industrial control ring network, which improved the stability of the network and transmission, and re-established a set of SCADA control system." Na Xin, deputy secretary of the Party Committee and general manager of the Municipal Water Supply Company, said that after the transformation, the functions of remote one-step start-stop and automatic sludge discharge of the unit were realized, and most of the equipment was remotely controlled and monitored, and three advanced process controls were realized: intelligent dosing, intelligent chlorination and intelligent backwashing of the filter.

    According to reports, the intelligent transportation management platform enables operators to complete all-round monitoring of equipment; The 3D visual modeling of the platform can intuitively show the specific information of the main factory’s processes, pipelines and equipment, which is convenient for personnel to understand and master relevant business knowledge. At the same time, the platform can also realize the management functions of production data, equipment, work orders, videos, alarms and reports, improve the level of digital management and help digital transformation.

    Na Xin said that the smart water plant project of Shapingba Water Plant, as a pilot demonstration project of smart water plant of the municipal water supply company, has promoted the steady development of Shapingba Water Plant from "digitalization" to "intelligence". After the implementation of the project, the production, operation and management of Shapingba Water Plant have been greatly improved. (Wang Cailing)

Chongqing Water Supply Company launched the theme activity of "Persisting in saving water and giving priority to promoting high-quality development". Wang cailing

Representative signature. Wang cailing

Represents knowledge of water saving. Wang cailing

Na Xin (first from left), deputy secretary of the Party Committee and general manager of the Municipal Water Supply Company, introduced the digital construction of Shapingba Waterworks. Wang cailing

Visit the sedimentation tank. Wang cailing

Sedimentation tank Wang cailing

Intelligent dispatching center. Wang cailing

　　Cctv news: "laughing gas", the scientific name is nitrous oxide. It is named "laughing gas" because it has a slight anesthetic effect and can make people laugh. In March this year, the police in Changchun, Jilin Province cracked a case of illegally operating "laughing gas". Recently (April 19th), the suspect Chen Mou was transferred to the court.

　　At the beginning of January this year, the police of Nanhu Road Police Station of Chaoyang Branch of Changchun Public Security Bureau received an alarm from a middle school student’s parents that his son suddenly disappeared, and the police quickly dispatched police to help find it. The next day, the police found the missing child in a bathing center.

　　After careful inquiry, the police found that the child bought "laughing gas" from Chen Mou, who works in a bar, and smoked it.

　　Subsequently, the police immediately set up a task force to carry out investigation. After information screening and visits, on January 28th this year, the police arrested the suspect Chen Mou.

　　Chen Mou, the suspect, confessed that he bought a lot of goods from the south and transported them to his rental point through logistics. Then Chen Mou sold "laughing gas" in WeChat friends circle and bars, mainly targeting teenagers. From the beginning of October to the end of December last year, the sales of "laughing gas" in Chen Mou reached more than 200,000 yuan. At present, the suspect Chen Mou has been transferred to court by the police.

　　It is understood that the scientific name of "laughing gas" is nitrous oxide. Medically, it is often used in combination with oxygen as an anesthetic to achieve analgesic effect; But smoking "laughing gas" is very harmful to human body.

Replay it 4000 times and it won’t fall to the altar.

Text | Liao Yizhou

Edit | Zhao Ordinary

Recently, when the glory of the king was opened, "Yungong Xunyin" sounded in the opening animation, and the DNA of netizens in the whole network moved again.

This "National Game" with a cumulative income of over $10 billion in October completed a historic linkage with the 86th edition of "National TV Series" The Journey to the West. Since the project was announced, it has been a frequent visitor to Weibo Hot Search, and every time a new skin goes online, it will also become the focus of discussion.

"the glory of the king" and "Sun Walker" skin

Director Yang Jie died in 2017. At that time, it was generally reported that the TV series had been replayed more than 3,000 times. In the promotional video of the glory of the king, the number became 4,000. Forty years ago, Yang Jie took the The Journey to the West crew for six years, trekked more than 100,000 kilometers, walked through 26 provinces and cities in China, and achieved a legend of the times with only one camera.

In the behind-the-scenes tidbits, several masters were delighted to be able to return to the public’s field of vision by this trendy form of games. Li Shihong, a voice actor in the Monkey King, said: "Unexpectedly, everyone has not forgotten us."

At that moment, the barrage was neatly brushed: "I can’t forget it!"

Journey to the West, or a presumptuous guest usurps the host’s role?

Thirty-five years ago, the first eleven episodes of The Journey to the West were broadcast during the Spring Festival, which caused a sensation in Xian Yi and the whole country, setting a viewing myth of 89.4%. Over the past 35 years, it has filled children’s childhood in winter and summer vacations every year, and its influence has been incalculable because of thousands of replays.

Today’s headlines released a set of data in 2016. The "Top10" of The Journey to the West’s original works respectively correspond to the story of the monkey king, Monkey King Thrice Defeats the Skeleton Demon, the three-borrowed banana fan, and the girl country. Without exception, all of them are stories filmed by The Journey to the West in the 86th edition, while the equally wonderful chapters of the original works (the sequel to Journey to the West in 2000) did not enter the top ten.

That year was the Year of the Monkey in the Lunar New Year. In a nostalgic trend, the program "Monkey Play", in which six-year-old children cooperated with Aaron Kwok, caused public dissatisfaction because they missed the CCTV Spring Festival Evening. Even though six-year-old children clarified that they had never been invited by CCTV, "Six-year-old children went to the Spring Festival Evening" and "Six-year-old children’s programs were killed" became hot topics in Weibo. There was no "Six Learning" in that year, and only millions of people jointly called for the Spring Festival Evening to interpret their dreams for the audience.

Not only at home, the 86th edition of The Journey to the West was also famous overseas. It is the first batch of TV dramas exported by New China, which was first broadcast in Southeast Asian countries such as Myanmar, Vietnam and Thailand. An article in Reference News mentioned: "In Vietnam, it caused a situation of empty lanes. When the drama was broadcast, even thieves and policemen disappeared from the streets." The score of the play in IMDB is still 8.6, and there are many comments on YouTube, such as "Thanks for enriching my childhood".

However, high status will inevitably bear more scrutiny.When the number of viewers who have seen the 86th edition of The Journey to the West far exceeds the number of readers who have read The Journey to the West’s original works, and the Monkey King, a six-year-old child, is "genuine", the voice of "misinterpreting the original works" has never stopped.

In the 86th edition, The Journey to the West made many adaptations to the original, such as the girl country section in the original, in which the relationship between the Tang Priest and the king was distinct from the beginning, and the TV series added a lot of tender and lingering "affection" meaning, and the Tang Priest’s momentary temptation was widely circulated with the song "Daughter Love".

At the same time, this TV series also added a "beauty filter" to the four masters and apprentices in the original work. Pig Bajie was originally a black wild boar with a "black face, short hair, long beak and big ears", but in the play it became white, fat and lovely, and Tang Priest often showed cowardice, selfishness and other despicable human nature. More contradictions focus on the Monkey King. The appearance of a six-year-old boy can be summarized as "Monkey King", while the Monkey King in the original works is short and ugly.

The Paper’s "Shanghai Book Review" column once published an article saying that "A Chinese Odyssey is closer to the original work than the 86th edition of The Journey to the West", and People’s Literature Publishing House also published an article expressing that "Yang Jie’s version of The Journey to the West is not as close to the original work as Stephen Chow’s", and compared the films such as "Demonizing the Journey to the West" together, saying that "the Monkey King’s cuteness, courage and kindness are completely inconsistent with the cannibalism, ferocity and violence in the original work". As for whether the Monkey King is "cannibalistic", there have been debates in Zhihu and other communities.

In essence, the 86th edition of The Journey to the West is also the product of a specific era.Its adaptation purpose completely conforms to the interpretation of novels by mainstream literary circles at that time:Full of romantic fantasies, praising rebellious mythical heroes. The TV series also "eliminates the weeds and saves the seeds", amplifying these parts that are in line with the "original spirit".

Chinese people’s feelings about traveling to the west are, to a great extent, feelings about the 86-edition TV series. On the level of "popularizing famous works", it has obviously taken the lead, but it is undeniable that without this version of TV series, many viewers will not think of paying attention to the original work.

A camera, a journey to the west.

The 86th edition of The Journey to the West’s filming road is also an out-and-out "learning from the classics". Yang Jie wrote in his autobiography: In people’s eyes, people of our time may be "idiots".

In the original work, there are both Yaochi Wonderland and the eerie demon cave. In order to put the beautiful scenery of mountains and rivers and humanistic architecture into the play, Yang Jie conducted a 63-day national landscape picking. When we arrived in Zhangjiajie, which had not been developed into a scenic spot at that time and was named "Shangyong", the mud road was slippery in the rain, and the van that the group took almost fell from the corner into the cliff.

Yang Jie once recalled,"The hardest part is stunts, which is an era when I don’t know what stunts are."There is only one Sony 300P split camera and only one machine in the whole crew, which means that the lenses of different positions have to be compensated by the "stupid way" of stacking times.

In the past six years, Yang Jie’s husband, Wang Chongqiu, went to the porthole to take pictures of the blue sky and the sea of clouds every time he flew. Some of these precious materials should be used as separate shots, while others should be used as the background of the key image. There was no professional photographic rail car, so Wang Chongqiu borrowed a bicycle from the crowd to replace it. There was no elevator, so he used three pillars as a seesaw to build one. The scene of "Underwater Dragon Palace" was created by the fish tank blocking the camera.

Blue screen keying relies on an imported ADO special effects machine, but when it is actually used, the crew found that it only bought hardware and didn’t buy supporting software, so it could not achieve three-dimensional effect. The software costs 50,000 dollars, far exceeding the budget, so many characters in special effects scenes in this version of The Journey to the West are "paper people".

Only the problem of funds can’t be overcome by hard work or clever thinking.When the 14th episode of "Hong Haier War" was filmed, the crew was plunged into economic crisis. The leader in charge said to Yang Jie, "Let’s make an ending." Yang Jie refused with the determination of "success or death" and filmed while raising money. The fundraising didn’t go well. In the end, Li Hongchang, the deputy director of production (who plays the role of black fox essence and centipede essence, etc.), raised 3 million yuan from the Eleventh Engineering Bureau of the Ministry of Railways, but in the end, it was reduced by 5 episodes and only 25 episodes were filmed.

Yang Jie’s salary for filming an episode by himself was 90 yuan. "Monkeys and Pig were 80, and Friar Sand was 60, so there was only a little reward." In Yang Jie’s memory, at that time, everyone didn’t talk about remuneration, regardless of time, and there was a record of working continuously for 23 hours. When traveling back and forth in more than 20 cities across the country, several wagons have to be moved by themselves, including four masters and apprentices.

The crew has a 30-cent night meal fee, which needs to be received after 11 pm. "When I eat at night, I said that I should add two bottles of beer to each table, and they all cheered. People at that time were very cute. "

In 2014, Han Han spent 100,000 yuan on The Journey to the West’s episode Daughter’s Love. It was the first time that Xu Jingqing and Yang Jie knew that there were still copyright fees, and they each took 30,000 yuan.Yang Jie said to Xu Jingqing, "Old Xu, this is the first time I have got such a high fee and so much money."

"Everyone is rushing to’ shoot a classic goal’." Xun Hao, deputy director, said, "No one will shoot TV series like this anymore."

A "sealed" westward journey

In this way, the 86th edition of The Journey to the West stands high on the historical coordinates, and the latecomers look up and approach, but no one can climb it.

The original challenger is itself. In 1998, Yang Jie applied to CCTV, and someone in the former crew had passed away. Otherwise, the five episodes that were cut off would be permanently lost. Yang Weiguang, then the director, agreed to shoot, and suggested that it was not only possible to shoot five episodes, so the script of Journey to the West was expanded to 15 episodes.

Restart the first episode of filming "Love Broken Black River", and choose Miyun Reservoir on the outskirts of Beijing. CCTV provided several mobile camera positions, and transferred two large cranes and a sprinkler. Compared with the hardships of filming version 86, the capital and technical conditions of the crew have been significantly improved. Yang Weiguang attached great importance to the sequel, and specially invited Cao Rong, the best action director of the Golden Horse Award in 1997, as the martial arts finger of this drama. In this episode, Cao Rong made a guest appearance in Prince Muang, the son of the West Sea Dragon King, which planted a seed for another controversial TV series in the future.

However, after the whole drama Journey to the West was broadcast during the Spring Festival in 2000, the response was mediocre, far from the grand occasion of that year. Yang Jie herself admits that the make-up is far from as simple as she imagined, and the final rendering effect is "far worse than the 86 version".

The makeup of the characters in Journey to the West is not exquisite enough and is also criticized.

There are different opinions on the reasons. Many fans have compared the two editions, pointing out that the level of Journey to the West has declined in aspects such as role makeup and lens scheduling. Even the theme song with high popularity, "Just captured several demons and surrendered several demons", is lower in artistic conception than the 86 edition, "Don’t boast that all monsters are scared, don’t mention dangerous mountains and evil waters."

Some media once asked Yang Jie, "Is it because the appreciation taste of the people has changed after 17 years, and the director’s thinking still stays in the past?" Yang Jie only said that "the story is no worse than before, but the character has not developed."

In the past 35 years, there have been two TV series filmed by The Journey to the West Quanben in the Mainland. In 2010, 52 episodes of The Journey to the West Douban filmed by Zhejiang TV Station scored only 5.7, which was not very meaningful. In 2012, Zhang Jizhong’s 60 episodes of "new journey to the west" took the road of "restoring the original work", but it was still not recognized by the audience because it wanted to make it too comprehensive and could not avoid the director’s personal "bootleg".Once compared, the 86 th edition was further pushed to the altar.

"Journey to the West" is an exception. In 1999, a businessman in Xi ‘an took a loan of 15 million yuan and a 20,000-word script to ask him to be a director. The original six-year-old boy temporarily refused to perform, so Cao Rong had to take the lead and said to the makeup artist at two o’clock in the morning, "Why don’t you let me try?" Cao Rong kept his eyes closed for fear of being laughed at during makeup, and only after taking the makeup photo did he find "OK", and a facial paralysis version of "Fight over Buddha" was born.

In addition to being unable to express his face because of makeup, Cao Rong knew that if he followed the same example, "No performance can beat a six-year-old child", he decided on the performance strategy of "three-point monkey, seven-point man", which was more in line with the steady changes after the Monkey King became a Buddha.

After the first edition of the 20,000-word story was changed into a script, it couldn’t support 30 groups at all, and it didn’t last long enough after the whole drama was filmed. However, the number of episodes is the boss’s rigid requirement. Cao Rong cut the action drama for half a year, "Try to slow down here, speed up there, or repeat some places", and was forced to create a "ancestor of ghosts and animals".

In Cao Rong’s memory, when The Journey to the West was broadcast, some people liked to jump on the street, while others scolded them. No one expected that it would become popular again because of "facial paralysis" and "ghost animals" several years later. At the end of 2019, Cao Rong moved to bilibili and began to re-edit "Journey to the West". A large number of viewers salvaged this TV series from their childhood memories, recalling that its plot was actually quite wonderful besides the stunt, and even many viewers really thought it was the story experienced by four apprentices after the westward journey.

However, the filming process and the red-hot process of Journey to the West are full of accidents, which can be recognized by the audience because its story frame has been divorced from The Journey to the West’s ontology, not to mention the impact on the 86 TV series.

Classic works like The Journey to the West,The audience can actually accept being unconventional without destroying the essence.The Biography of Journey to the West is a microcosm, and the movie A Chinese Odyssey, the online biography of Wukong, the animation The Return of the Great Sage, and the game Black Myth: Wukong have their own fans.But at the same time, once Zhu Yu is in the front, everyone’s tolerance threshold for "remake and destroy classics" has always been extremely low.With the passage of time, the 86th edition of The Journey to the West, which has been bearing the memory of several generations, has been almost stamped with an untouchable historical seal.

The Story of Wukong took a subversive route earlier in the Mainland.

Objectively speaking, the TV series 35 years ago will not be perfect, and there are also basic problems such as unstable supporting actors and rough special effects technology. In Yang Jie’s words, "everyone forgave it."

The 86th edition of The Journey to the West is a myth created in the era of "concentrating on doing great things". After 35 years of reinforcement, it is even more indestructible. Yang Jie once said that some works will surpass her The Journey to the West, but it is only a matter of time.

In a later interview, she added a note to this sentence: "But I don’t know if it goes on like this today."

The worst Jin Yong drama is always the next one.

Children of the jstars: When the double-speed button is pressed on the family drama.

　　On April 17th, the reporter learned from the FAST Operation and Development Center of the National Astronomical Observatory that more than 900 new pulsars have been discovered by the 500-meter spherical radio telescope (FAST) known as the "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)".

　　Produce a series of world-class achievements in the fields of the origin of fast radio bursts and gravitational wave detection; Independent research and development of receiver core components is expected to go abroad; FAST core array construction is ready to go … …

　　Staring at the starry sky, I kept walking. "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" is constantly providing China wisdom to the world astronomy and China technology to the global engineering community.

　　Frequent achievements

　　"Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" is a well-known national weapon. In order to "produce early results, produce more results, produce good results and produce great results", China scientists constantly "challenge the limits of cognition and technology" and polish their profound "eyes" with "Creation by China".

On April 17th, the reporter got news from the FAST Operation and Development Center of the National Astronomical Observatory of the Chinese Academy of Sciences that the number of new pulsars discovered by the 500-meter spherical radio telescope (FAST), known as the "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)", exceeded 900. Xinhua News Agency issued Liu Xu Lu Yuhan’s establishment

　　Up to now, Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has discovered more than 900 new pulsars, including at least 170 millisecond pulsars, 120 binary pulsars and 80 faint occasional pulsars.

　　"We are expanding the cognitive limits of human beings to the universe." Han Jinlin, head of the galactic plane Pulsar Survey Project of the National Astronomical Observatory, said. In the 50 years from the discovery of the first pulsar by humans to the discovery of the first pulsar by FAST, less than 3,000 pulsars have been discovered in the world.

　　On October 10th, 2017, Five-hundred-meter Aperture Spherical Radio Telescope (FAST) announced the discovery of six new pulsars, achieving a "zero breakthrough". This is the first time that China has discovered pulsars with its own independently developed radio telescope.

　　At present, more than 900 new pulsars have been discovered by Five-hundred-meter Aperture Spherical Radio Telescope (FAST), which is more than three times the total number of pulsars discovered by other telescopes at the same time in the world.

　　Among them, compared with the normal pulsars, the radiation flux density of 80 faint occasional pulsars is one order of magnitude lower, and the lowest one has reached the submicrocentric order.

　　In Han Jinlin’s view, the study of these accidental pulsars is of great significance for understanding how many dense neutron star wrecks are formed after the death of stars in the Milky Way and revealing the unknown physical process of pulse radiation.

　　Han Jinlin told reporters that if searching for pulsars is compared to picking fruits, all the pulsars discovered before are close to the ground and easy to "pick", while the more than 900 new pulsars discovered by Five-hundred-meter Aperture Spherical Radio Telescope (FAST) are farther away or more difficult to pick.

　　Because each pulsar has its own special pulse and stable rotation frequency, they are equivalent to the "lighthouse" with unique signal marks in the universe. If the Interstellar can be realized in the future, these pulsars will provide "navigation" for human beings to travel in the vast universe.

　　"We accurately measure the coordinates of pulsars in space, and monitor the phases and corresponding positional relationships of multiple pulsar signals during the journey, so that humans will not get lost in interstellar travel." Han Jinlin said.

Panorama of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" taken on February 26th, 2024 (panoramic picture of UAV, taken during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　It is the first time to observe the "pulse" of black hole in radio band, detect the key evidence of the existence of nanohertz gravitational wave, and detect and construct the world’s largest neutral hydrogen galaxy sample … … In recent years, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" has made China contributions to exploring the mysteries of the universe.

　　In the face of the unknown and the future, human destiny is shared. From the moment it was born, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" shouldered the mission.

　　Sun Chun, the measurement and control engineer of Five-hundred-meter Aperture Spherical Radio Telescope (FAST), introduced that since it was officially opened to the global scientific community on March 31st, 2021, Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has helped research teams from 15 countries including the United States, the Netherlands and Australia to carry out observation for nearly 900 hours, covering many fields such as scientific target drift scanning survey, neutral hydrogen galaxy survey, galaxy polarization survey, pulsar time measurement, and rapid radio burst observation.

　　In the foreseeable future, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" will bring more new perspectives for the international astronomical community to continue to explore the universe and try to find the unknown, and make greater contributions to leading mankind to break through the new field of cognition.

　　Innovation is not limited.

　　"I thought it would be revised seven or eight times, but I didn’t expect the performance of the first edition to reach the world advanced level." Chai Xiaoming, a senior engineer at the National Astronomical Observatory of the Chinese Academy of Sciences, introduced to the reporter a low-noise amplifier with a silver-plated shell and only the size of an organ. It was hard to hide his excitement in his speech.

　　Low noise amplifier is the core component of Five-hundred-meter Aperture Spherical Radio Telescope (FAST) receiver, which was imported before.

　　In order to solve the problem of "stuck neck" and master the key technology in their own hands, Chai Xiaoming’s team spent nearly two years independently developing this high-performance domestic low-noise amplifier.

Panorama of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" taken on February 26th, 2024 (panoramic picture of UAV, taken during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　Once the prototype was launched, it attracted the attention of the international astronomical community. The BINGO project in Brazil first proposed the willingness to cooperate in bulk purchase to the FAST Operation and Development Center.

　　As the largest and most sensitive single-aperture spherical radio telescope in the world, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" has stimulated many special technical requirements, which requires China scientists to give full play to their subjective initiative and creativity, and to optimize and upgrade by constantly "challenging the cognitive and technical limits" and constantly "discovering and solving problems".

　　There is no shortcut to innovation, only dare to climb.

　　"No one told you what to do, and no one was sure that his own method would work." Jiang Peng, executive deputy director and chief engineer of FAST Operation and Development Center, said that the difficult research of "trial and error, failure and courage" runs through almost every link of FAST construction stage.

　　In order to solve the problem of cable fatigue, Jiang Peng led a group of young people through nearly 100 failures and successfully supported the "retina" of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)".

The "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" feed cabin (photo of UAV, taken during maintenance) taken on February 26th, 2024. Xinhua News Agency reporter Ou Dongyu photo

　　In order to develop a new control system, Sun Jinghai, director of the Measurement and Control Engineering Department of FAST Operation and Development Center, burned the midnight oil to the east for countless times and almost rewritten all the core algorithm codes.

　　In order to solve the problem of electromagnetic interference in substations, Gan Hengqian, director of the Electronic and Electrical Engineering Department of FAST Operation and Development Center, invented &hellip, a high-voltage filter matching with Five-hundred-meter Aperture Spherical Radio Telescope (FAST), after nearly two years of exploration and testing. …

　　Only in the construction stage, "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" won important scientific and technological awards in more than ten fields, such as steel structure, automation industry, machinery industry, surveying and mapping geographic information technology, and electromagnetic compatibility research and development.

Panorama of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" taken on February 26th, 2024 (photo of UAV, taken during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　"Eye of the Sky" asks the sky, and there is no end. Jiang Peng said frankly that if FAST is only regarded as a telescope and a monitoring device, it has reached the standard now. However, to maintain the leading position of FAST in the world, our innovation cannot stop, and we will do our best to make FAST more stable and efficient.

　　At present, the annual observation time of FAST is stable at about 5,300 hours, which plays an important supporting role in continuously outputting scientific research results.

　　Compete for the future

　　Explore the sky and decipher the stars. "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" has never stopped innovating.

　　"Astronomy is extremely romantic, because it studies the sea of stars of human beings. Astronomy is also extremely cruel, because international competition is extremely fierce, and once it is relaxed, it will lose its leading position. " Jiang Peng said.

　　Looking around the world, many radio telescope arrays, such as SKA, are under construction.

Five-hundred-meter Aperture Spherical Radio Telescope (FAST) measuring pier photographed by infrared camera on February 27th, 2024 (photographed during maintenance). Xinhua News Agency reporter Ou Dongyu photo

　　"Once these telescopes are put into operation, ‘ Five-hundred-meter Aperture Spherical Radio Telescope (FAST) ’ Will face enormous challenges. " Jiang Peng said, "If we relax a little, China astronomers may ‘ Lost ’ The forefront of the radio band field of vision. "

　　The reporter recently walked into the core area of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" and saw on a hill less than 3 kilometers away from "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" that the excavator was working intensively, and the original jagged hill top with miscellaneous trees had been leveled and compacted.

　　"We plan to use the excellent electromagnetic wave environment within 5 kilometers around FAST in the next five years to build 20 to 30 fully movable radio telescopes with a diameter of 40 meters, and form a comprehensive aperture array with FAST, that is, the FAST core array." Jiang Peng told reporters that a 40-meter-class fully movable radio telescope will be built on the working hill within this year.

　　"By ‘ Five-hundred-meter Aperture Spherical Radio Telescope (FAST) ’ Observing the universe is like using ‘ Thick-headed pencil ’ If the core array is completed and put into use, it is equivalent to using high-resolution ‘ Digital camera ’ Shoot the distant stars. " Jiang Peng introduced that once the core array is completed, it will greatly improve the vision of "Five-hundred-meter Aperture Spherical Radio Telescope (FAST)" and let "‘ Five-hundred-meter Aperture Spherical Radio Telescope (FAST) ’ Not only can you see far, but you can also see clearly. "

Jiang Peng (left), executive deputy director and chief engineer of FAST Operation and Development Center, observed the equipment operation in the main control room (photo taken on March 20, 2024). Xinhua News Agency reporter Liu Xushe

　　According to AARON Li, director of the Structural and Mechanical Engineering Department of FAST Operation and Development Center, FAST Core Array will expand the existing scientific research fields, especially play an important role in extreme temporary sources such as gravitational wave events, fast radio bursts, gamma ray bursts, supernovae and black hole tidal disintegration events.

　　In addition to astrophysical research, FAST core array is expected to play a huge role in the field of deep space exploration, such as near-earth object early warning, space micro-target detection, deep space satellite communication and control, ionospheric characteristics measurement, pulsar time reference, etc., which can play a very important strategic support role for the development of China’s aerospace field.

　　Jiang Peng said: "In order to keep China’s radio astronomy power internationally advanced, we will accelerate the climb from a new starting point and lead the team to explore new scientific frontiers."

　　Reporter: Zhao Xinbing, Ou Dongqu, Pan Dexin

　　Video reporter: Ou Dongqu, Yang Yanbin, Liu Qinbing and Chen Gan

　　Poster design: Sun Yao

　　Editor: Jindi, Ringo, Qi Wenjuan, Liu Yongzhen, Lin Fanjing, Hou Bangxing, Cheng Hao

　　Coordinator: Huang Xiaoxi and He Yuxin