CCTV News:On October 21st, 2017, coincided with the grand opening of The 19th National Congress of the Communist Party of China, the 23rd China Yiwu International Commodities Fair, the largest commodity fair in China, was held in Yiwu, Zhejiang.

　　This year’s Yiwu Fair has 4,100 standard booths, involving 14 major industries. Combining with the cultivation direction of emerging sectors, it has set up eight special areas, namely "Made in Zhejiang" theme area, standard Expo area, innovative design, smart lifestyle, fashion department stores, international brands, e-commerce and trade services, and women’s Federation handicrafts, with a total of 10 pavilions with an exhibition area of 100,000 square meters. It attracted more than 2,200 enterprises from 16 countries and regions including Australia, Japan, Brazil, Germany, Italy and France, as well as 24 provinces (municipalities and autonomous regions) in China.

　　As an important supporting meeting in the 2017 Yiwu Fair, the "2017 China Retail Department Store (Yiwu) Purchasing Summit" was held simultaneously during this period. The summit was hosted by the Executive Committee of Yiwu International Commodity Expo in China, jointly organized by Zhejiang China Commodity City Group Co., Ltd. and IBMG International Business Management Group, and sponsored by Yiwu Mr. Huolang Trading Co., Ltd., and the conference received extensive attention and praise from the government, industry, news media and people from all walks of life.

　　More than 200 enterprise bosses and senior executives from more than 50 retail enterprises, including national top 100 retail enterprises, listed companies and regional leading enterprises, led their professional purchasing teams to participate in the summit. In order to actively broaden the domestic sales channels of local suppliers in Yiwu, improve the purchasing efficiency and quality of participating retailers, and promote the in-depth cooperation between suppliers and retailers, the summit invited Mr. Li Sheng, deputy director of the Expert Working Committee of China Business Federation, Professor Wu Leijun, course director of SPACE China Business College of the University of Hong Kong, and other big coffee makers in the retail industry to conduct in-depth thematic discussions and share, and specially arranged a number of on-site retailers’ fair for high-quality goods, which promoted many categories such as household goods, imported goods, knitwear, toys, cultural offices and sporting goods. During the summit, the delegates also visited well-known local enterprises in Yiwu, and went deep into the factory to learn about commodity technology.

　　Mr. Jiang Ming, President of China Business Federation, made an opening speech for the summit.

　　In his opening speech, Mr. Jiang Ming, President of China Business Federation, said: Yiwu has changed from "buying and selling the whole country" to "buying and selling the whole world". This is a hot spot for entrepreneurship, a land of real miracles. Department stores cover a wide range of commodities, and have become synonymous with Yiwu. Yiwu International Trade City is one of the largest export bases of small commodities in China, and its market extroversion has reached 65%.

　　The theme of this conference, "focusing on commodities, upgrading layout-supply chain reconstruction under consumption upgrading", fits the background of the retail industry environment, identifies the profit model, returns to the essence of retail, and locates customers with commodities. This summit will discuss how to rebuild the supply chain in the new retail era with the help of Yiwu’s advantages, new technologies and new theories, focus on market consumers, push forward with the pace of transformation of both domestic and foreign trade in Yiwu Fair, and strive for the healthy and rapid development of the retail industry and a broader future!

　 　 [XCAR test drive original]

　　　　Domestic pickup truck culture started relatively late compared with European and American countries. Both the market environment and consumers’ concept of car purchase are in a relatively immature stage. I believe that when many people talk about pickup trucks, they still link them with cheapness and freight for the first time. Of course, in the past two years, with the introduction of some American pickup trucks, a high-end pickup truck culture focusing on playing with cars has gradually emerged. Looking at the domestic auto market, the current situation of pickup trucks can be said to be serious. One is the cheap pickup truck based on freight, and the other is the American high-end pickup truck just mentioned. The pickup truck market between these two types is basically blank. The Isuzu D-MAX we test-drive today has a clear mission, which is to strive to be a pioneer in this market.

　　　　Since the D-MAX produced by Isuzu’s domestic joint venture manufacturer (Jiangxi Isuzu) has not been officially launched, we chose Australia, where Isuzu has a large number of pickup trucks and the pickup market is relatively mature, to get close contact with this model.However, after three months, we will be able to see the D-MAX model produced by Jiangxi Isuzu in the domestic market.

　　　　Since D-MAX is about to be produced in China, I have to talk about its manufacturer — — Jiangxi Isuzu. For consumers, this is a strange and young manufacturer. Jiangxi ISUZU is a joint-venture vehicle manufacturer established by Japanese Isuzu in China.It is jointly funded by Japanese Isuzu and jiangling motors Group, with the equity ratio of 50:50.

　　　　The model that Jiangxi Isuzu is about to put into production at present is D-MAX pickup truck, which is the protagonist of our test drive today. At the end of next year, Jiangxi Isuzu will also introduce a heavyweight SUV model for production. This model, named MU-X, has been listed in international markets such as Australia.

　　　　When it comes to the history of D-MAX, if you read the picture below, I believe it can bring back some memories. Isuzu pickup truck began to enter China from TF model. At first, it was introduced and produced by Qingling. Later, domestic independent brands began to copy this model.

　　　　Since it is a pioneer in the domestic mid-range pickup market, does D-MAX really have no competitors? From the perspective of head-on confrontation, there is really no pickup truck model in the domestic mid-range pickup truck market that can be similar to D-MAX in price, configuration and technical level. But from the perspective of positioning, it seems that only Toyota’s hilux can be regarded as a competitor.

　　　　Although Zhengzhou Nissan’s D22 pickup truck is similar to D-MAX in positioning and design, the D22 model is too old to compete with D-MAX in the same generation. The Nissan Navara pickup truck, which can really compete with D-MAX, has no plans to introduce it at present.

　　　　The positioning of Isuzu D-MAX was introduced by the author at the beginning, and it mainly focuses on the mid-range pickup market. In addition to the outstanding loading capacity of pickup trucks, D-MAX has excellent performance in the interior space and passability. Although it is the pioneer of mid-range pickup trucks in China at present, it is also in sync with the international level in terms of technology. However, if D-MAX wants to make some achievements in this strange emerging market, it is indeed difficult to see the current domestic pickup truck environment and road regulations. For example, in a first-tier city like Beijing, the driving of pickup trucks will still be greatly restricted, which is an unavoidable reality.

　　Cctv newsOn August 30th, International Sharp Review, the general radio and television station of China, broadcasted an article entitled "Australia’s reasons for rejecting Huawei are untenable", which was reprinted or quoted by many overseas media.

　　From August 30th to September 1st, CNBC, Singapore Asia News Channel, Malaysia National News Agency Radio, etc. quoted relevant contents or materials. French digital radio LCF facebook account, German-Chinese Report website, Spanish Radio International website, Italian Radio We website (facebook, twitter), Indian Daily Morning News website, Kazakhstan Industrial News website, Jordan Global Radio facebook account, Nordic Times website, Europe-China United Times website and many other overseas media forwarded. The main reports are as follows:

　　For those who are concerned about the development of global telecommunications technology, if asked which company in the world has suffered the most and been censored the most? People may think of China Huawei in unison. Recently, the Australian government banned Huawei from participating in the construction of Australia’s 5G network on the grounds of "network security" in an obscure statement, which hindered the company’s business in Australia.

　　Network security is the focus of all network users and the core concern of all countries. However, this concept should not be too generalized, and even become an excuse to achieve a certain political goal. As far as Australia prohibits Huawei from participating in its 5G network construction, the reason of "network security" is untenable from any level.

　　First of all, from the perspective of cooperation, according to public information, Huawei, as the world’s largest telecom equipment supplier, has cooperated with 45 of the world’s 50 mainstream telecom operators, covering 170 countries and supporting the daily communication needs of more than one-third of the world’s population. If Huawei’s network is not secure, the global telecom giants will never venture to cooperate with it. According to the news released by Huawei, Australian operators have been using Huawei equipment for 15 years, during which there has never been an incident that threatened Australia’s national security; Huawei has never received any questions from the Australian government about its corporate governance and the safety of its business operations.

　　Secondly, from a technical point of view, Huawei, as the largest provider of 4G network technology in Australia, not only promoted the competition in the local telecommunications market, but also reduced the broadband and communication costs of local consumers. With the development of information technology, 5G network with higher speed and lower delay is becoming the next competitive point in the industry. At present, Huawei ranks first in the world in the number of 5G patents, and most western countries, including Britain, New Zealand and Canada, accept Huawei’s common practice of expanding 5G on the basis of 4G. In fact, there is no essential difference between 5G architecture and 4G, and its core network and access network are separated. Compared with 4G, it has a more perfect guarantee mechanism in security and privacy protection. Since Australia asked Huawei to build a 4G network, why not 5G?

　　Thirdly, from the industrial point of view, in today’s highly globalized world, Huawei, Nokia, Ericsson and Apple all have similar global supply chains and production lines, and all of them are made in China. Even if Australia refuses Huawei to participate in the construction of the 5G network and chooses other manufacturers, most of the 5G devices deployed by other manufacturers will still be made in China.

　　"Cyber security" is just an excuse for Australia to close the door to Huawei. It is neither in line with business rules nor aboveboard, and there are deeper political factors behind it. For a long time, China has been Australia’s largest trading partner, and the United States has always provided it with a security umbrella. Australia is trying to find a balance between these two most important foreign relations. Since last year, Australia-China relations have been cold, and the unfriendly side to China in Australia’s domestic atmosphere has risen sharply. China students have been accused, Chinese in Australia have been questioned, and all people or organizations associated with China have been labeled as "unsafe". As a multinational private enterprise in China, Huawei originally participated in Australian business through fair competition, but it was "original sin" because it came from China.

　　The National Defense Authorization Act recently passed by the United States stipulates that it is forbidden for any U.S. government department to use the products of China Huawei and ZTE, and it is also forbidden for any entity that has business relations with the U.S. government to do so. In terms of security, Australia, which has always looked at the United States with a wink, took advantage of the complex domestic political atmosphere to violate the treaties or agreements on bilateral investment and free trade signed by China and Australia in 1988 and 2015, at the expense of the interests of the Australian people, and blocked Huawei from the market under the pretext of "security". According to the latest news, this move has caused Australian communication service providers to prepare to raise prices.

　　China-Australia relations are essentially win-win cooperation. Over the years, Huawei has been rewarded in the Australian market because of its efforts in innovation, and Australia has also accelerated the upgrading of information facilities and the transformation of the digital economy because of the products and services provided by Huawei, and both enterprises and people have a real sense of gain. Commercial issues should not be politicized. If Australia wants to seize the opportunity of information technology and achieve economic growth in the next few decades, it should take off its colored glasses and welcome innovative China enterprises like Huawei to actively participate in its development process.

　　Many overseas media quoted and forwarded "International Sharp Review" articles:

　　As of September 1, 2018, CNBC has quoted relevant content or materials twice.

　　As of September 1, 2018, Singapore Asia News Channel has quoted relevant content or material 6 times.

　　French digital radio LCF facebook account forwarded on August 30, 2018

　　The German-Chinese Report website was forwarded on August 30, 2018.

　　Radio Spain International website forwarded on August 30, 2018

　　Italian Radio We website (facebook, Twitter) forwarded on August 30, 2018.

　　India’s "Daily Morning News" website was forwarded on August 30, 2018

On July 7, the Ministry of Commerce and other 17 departments issued the "Notice on Several Measures for Invigorating Automobile Circulation and Expanding Automobile Consumption", which pointed out that we should support the consumption of new energy vehicles and study the extension of the vehicle purchase tax exemption policy for new energy vehicles after its expiration. Carry out in-depth activities of new energy vehicles to the countryside, encourage qualified places to introduce support policies to the countryside, guide enterprises to increase preferential activities, and promote the consumption and use of new energy vehicles in rural areas.

The following is the full text of the notice:

People’s governments of all provinces, autonomous regions and municipalities directly under the Central Government, Xinjiang Production and Construction Corps:

The automobile industry is a strategic and pillar industry of the national economy. In order to further invigorate automobile circulation, expand automobile consumption, help stabilize the basic economy and ensure the improvement of people’s livelihood, with the consent of the State Council, relevant matters are hereby notified as follows:

First, support the purchase and use of new energy vehicles

(a) to promote cross-regional free circulation, to break the local protection of the new energy vehicle market, each region shall not set the local new energy vehicle models for the record directory, and shall not set unreasonable vehicle parameter indicators for the sales and consumption subsidies of new energy vehicle products.

(2) Support the consumption of new energy vehicles, and study the extension after the expiration of the vehicle purchase tax exemption policy for new energy vehicles. Carry out in-depth activities of new energy vehicles to the countryside, encourage qualified places to introduce support policies to the countryside, guide enterprises to increase preferential activities, and promote the consumption and use of new energy vehicles in rural areas.

(3) Actively support the construction of charging facilities, accelerate the construction of charging facilities such as residential communities, parking lots, gas stations, expressway service areas, passenger and freight hubs, and guide charging pile operators to appropriately reduce charging service fees.

Second, accelerate the active second-hand car market

(four) to cancel the unreasonable restrictions on the development of second-hand car distribution, and make it clear that enterprises with registered residence and business premises outside the second-hand car trading market can carry out second-hand car sales business. For enterprises engaged in new car sales and used car sales, the business scope shall be uniformly registered as "automobile sales" and put on record according to relevant regulations. The filing enterprise shall truthfully fill in the business content and other information, and the commercial department shall promptly push the information of the filing enterprise to the public security organ and the tax department. Since October 1, 2022, if a registered automobile sales enterprise purchases a used car from a natural person, it is allowed to issue a unified invoice for the sale of used cars in reverse and handle the transfer registration procedures accordingly.

(five) to promote the commercialization of second-hand cars, and to clarify that automobile sales enterprises should conduct accounting for second-hand cars purchased and used for sales according to the unified accounting system of the state. Since October 1, 2022, when a registered automobile sales enterprise applies for the transfer registration of a small non-operating used car, the public security organ will implement the management of separate endorsement and issue a temporary license plate. For cities where automobile purchases are restricted, it is clear that used cars purchased by automobile sales enterprises and used for sales do not occupy the number plate index.

(VI) Support the large-scale development of second-hand car circulation, strictly implement the policy of completely canceling the restrictions on the movement of second-hand cars in all regions, and cancel the restrictions on the movement of small non-operating second-hand cars that meet the national emission standards from August 1, 2022, so as to promote the free circulation of second-hand cars and the cross-regional operation of enterprises. Since January 1, 2023, if a natural person sells three or more used cars that have been held for less than one year in a natural year, automobile sales enterprises, used car trading markets, auction enterprises, etc. shall not issue a unified invoice for the sale of used cars, and shall not go through the transaction registration procedures, and the relevant departments shall handle it according to the regulations. Public security organs and tax authorities share verification information, and tax authorities make full use of the shared information to provide information support for relevant enterprises to issue invoices.

Third, promote automobile renewal consumption

(seven) to encourage the comprehensive use of economic and technological means to promote the withdrawal of old vehicles, conditional areas can carry out the old car, accelerate the elimination of old vehicles.

(eight) improve the recycling system of scrapped motor vehicles, and support qualified enterprises to obtain the qualification for recycling scrapped motor vehicles. Enterprises that have obtained qualifications before the implementation of the Detailed Rules for the Management of Scrap Motor Vehicle Recycling, such as those unable to re-complete the qualification confirmation on schedule due to the impact of the COVID-19 epidemic, may be postponed until March 1, 2023. Increase the support for the construction projects of scrapped motor vehicle recycling enterprises. In principle, the nature of the land for enterprise construction projects should be industrial land. For enterprises that have obtained the qualification of scrapped motor vehicle recycling and projects under construction that have obtained the approval of land use or the planning permission of construction projects within 3 months after the issuance of this document, the land should be used according to the determined purposes.

Fourth, promote the sustained and healthy development of parallel automobile imports

(9) Support the parallel import business of automobiles in the import port area of complete automobiles, and the parallel import business of automobiles can be carried out at the import port of complete automobiles after the work plan of parallel import of automobiles is approved by the provincial people’s government and reported to the Ministry of Commerce for the record. We will improve the compulsory product certification and information disclosure system for parallel imported cars, allow enterprises to make a commitment that the imported cars will continue to meet the national six emission standards, and continue to implement the relevant policy requirements for the OBD test and data information of parallel imported cars in the environmental protection information disclosure link.

Fifth, optimize the automobile use environment

(ten) to promote the construction of urban parking facilities, effectively improve the effective supply level of urban parking facilities, accelerate the application of new technologies and new models, and promote the sharing of parking resources and the matching of supply and demand. The newly-built residential area will build parking facilities in strict accordance with the urban parking planning and the construction standards of complete residential communities. Actively expand new parking facilities in combination with urban renewal actions such as the transformation of old urban communities. Make rational use of civil air defense projects, underground spaces of parks and green spaces, and tap the potential to build more parking facilities. All localities should improve the parking fee policy, strengthen the policy support of capital land use, and increase the use of local debt to support the construction of qualified parking facilities.

(11) Develop automobile cultural tourism and other consumption, support the construction and operation of automobile sports events, automobile self-driving sports camps and other projects in terms of land use, study and formulate the conditions for the identification of traditional classic vehicles, and promote the development of traditional classic car-related industries and automobile culture such as exhibition, collection, trading and competitions.

VI. Enriching automobile financial services

(12) Encourage financial institutions to reasonably determine the down payment ratio, loan interest rate and repayment period under the premise of compliance with laws and controllable risks, and increase credit support for automobile consumption. We will develop auto financing leasing in an orderly manner, encourage auto manufacturers, sales enterprises and financing leasing enterprises to strengthen cooperation and increase the supply of financial services.

All regions and relevant departments should earnestly strengthen organization and leadership, refine work measures according to their responsibilities, promote relevant policies and measures to take effect as soon as possible, and further promote the recovery of automobile consumption and the release of potential.

　　CCTV News:2023 is the 25th anniversary of the establishment of diplomatic relations between China and South Africa, and it is also the BRICS "South Africa Year". At the press conference on August 17th, a spokesman for the Ministry of Commerce said that in recent years, under the strategic guidance and personal promotion of the two heads of state, the economic and trade cooperation between China and South Africa has made great progress.

　　Bilateral trade grew rapidly. In 2022, the bilateral trade volume between China and South Africa reached US$ 56.74 billion, a year-on-year increase of 5%, a record high in eight years. In the first half of 2023, it was further accelerated, with an increase of 11.7%. China has been South Africa’s largest trading partner for 14 consecutive years, and South Africa has been China’s largest trading partner in Africa for 13 consecutive years.

　　Two-way investment has achieved remarkable results. China is one of South Africa’s major sources of investment, with an investment stock of more than 10 billion US dollars, covering finance, home appliances, automobiles, mining, energy and other fields. South Africa is also the African country that actually invests the most in China, and the two sides have formed a stable and strong cooperative relationship in the supply chain and industrial chain.

　　Cooperation under the multilateral framework is strong and effective. The two sides jointly safeguard the non-discriminatory, open, inclusive and transparent multilateral trading system, emphasize the importance of multilateralism, and jointly promote the success of the 12th WTO Ministerial Conference beyond expectations. Relying on the BRICS cooperation mechanism, we issued a unanimous voice to support the multilateral trading system, release the potential of the digital economy, promote trade and investment and sustainable development, and strengthen supply chain cooperation.

　　China Daily Online, May 6 (Xinhua) Foreign media reported that recently, with the fermentation of American banking crisis, panic is intensifying in the American financial circle represented by Wall Street. Many people in the industry pointed out that the current market situation is not good, and the crisis may spread again, but the regulatory system has not paid enough attention to it.

　　"Starting with the collapse of the Silicon Valley Bank, although the government intervened to provide protection for depositors and provided loans to major banks, fear has taken root and continued to breed on Wall Street." CNN reported that.

　　"We feel a strong sense of worry and feel that something is about to happen." The report quoted Ed Moya, a senior market analyst at Anda, as saying, "Infectious panic has never dissipated."

　　This is a First Total Bank photographed in new york, USA on May 1st. (Xinhua News Agency, photo by Guo Ke)

　　Recently, the First Total Bank of the United States declared bankruptcy, becoming the third bank in the United States to close this year. Investors are beginning to worry, who will be next? Many people have focused their eyes on a regional bank in California — — Western Pacific Union Bank. On Thursday, the bank’s share price was close to "halved", and the bank has also said that it is currently exploring "strategic options".

　　Not only the Western Pacific Union Bank, but also the share price of lines West Bank in the United States once plunged after the Financial Times broke the news that it was seeking to sell. The Arizona-based bank subsequently denied the report, making its share price "recover lost ground", but its market value has dropped by 65% this year.

　　In addition, regional banks located in the southeast — — First Horizon Bank is also "teetering", and its $13 billion M&A agreement with Dominion Bank of Canada has been terminated.

　　In the face of concerns, Western Pacific Union Bank said that the bank’s current liquidity is abundant, the available liquidity is still stable, and it exceeds uninsured deposits, accounting for 188%. However, this data does not seem to completely dispel the market’s doubts.

　　"Usually, these data can dispel investors’ fears, but now it is ‘ Extraordinary period ’ 。” Edmoya said, "Even if the data doesn’t look so bad, as long as the market is eyeing you, the game is over."

　　The pessimism of the market has also been verified by the statements of some well-known investors. On Thursday, Bill Ackerman, a well-known American investor and billionaire, stated on the social media platform that the current regional banks in the United States have generally fallen into crisis.

　　Ackerman criticized the American banking supervision system. He also said: "It takes decades to build confidence in financial institutions, but it only takes a few days to completely destroy this trust. With the fall of dominoes, the next fragile bank started again ‘ Teetering ’ 。”

　　With the collapse of many banks, the financial hegemony of the dollar system is disintegrating. (Source: China Daily Roger English China Journal, March 24, 2023, 8th edition)

　　Ackerman and others are calling on the US government to further intervene and raise the upper limit of deposit insurance in the United States. At present, the maximum insured amount of most deposit accounts of the Federal Deposit Insurance Corporation of the United States is $250,000. For many companies that are struggling, this amount can only be regarded as a drop in the bucket. But even so, raising the deposit ceiling requires bipartisan support in the US Congress, and "for rational market participants, no one will count on this".

　　Ackerman is not the only one who criticizes American regulators. Mohammed El-Elian, chief economic adviser of Allianz, also said that the Fed should solve the problem of banking turmoil. He said that the risk of more bank failures has not been eliminated. The big banks in the United States will not be among the first-round shocks, and the problems will all focus on smaller and regional banks.

　　David Rosenberg, a famous economist, also criticized the Fed’s attitude towards the banking crisis. He believes that in the face of the continuous fermentation of the banking crisis, Fed officials have not paid enough attention to it.

　　"We are likely to default on our debts at the moment, and the banking crisis is spreading. Sorry Jamie (referring to Federal Reserve Chairman Jerome Powell), the crisis is not over. Focusing on inflation, these people can’t hear clearly. " Rosenberg said.

The Long March is a manifesto

The Long March is a propaganda team.

Long March is a seeder.

　　　　　　 In October, 1934, the Chinese Red Army of Workers and Peasants began a long March that was arduous and shocked the world. According to statistics, during the Long March, the Central Red Army passed through 11 provinces, crossed 18 mountains, crossed 24 rivers, crossed grasslands and climbed snow-capped mountains, with a journey of about 25,000 miles. Finally, in October 1936, the three main forces of the Red Army joined forces, marking the victory of the Long March and creating a great miracle in human history! Through the Long March, the Communist Party of China (CPC) publicized our Party’s anti-Japanese proposition of going northward, sowed revolutionary kindling in various places along the Long March, and also expanded the influence of the Communist Party of China (CPC) and the Red Army in the whole country.

　　　　　　 On August 1, 1965, in order to commemorate the 30th anniversary of the victory of the Red Army’s Long March, a large-scale vocal suite "Long March Suite — — The red army is not afraid of the expedition.

　　　　　　 On the stage of this issue of Le Ling Singing, we welcome an old comrade-in-arms chorus art troupe formed by retired actors of Long March Suite and some singers who love Long March Suite. They will tell us why Long March Suite has been sung for decades and how it has become a classic among classics.

　　　　　　 Let’s meet the actors who premiered 55 years ago. Time can only take away youth, but it can’t take away lofty ideals and firm beliefs!

Chorus of revolution

The revolution of chorus

　　　　　　 Referring to the response after the premiere of "Song of the Long March", as the original general director, Grandpa Han Rongshi, who is 88 years old this year, said: "The situation at that time is still vivid. After the performance, it was an instant hit and was warmly welcomed. Comrade Zhu Jianer, a musician, wrote an article saying that "Long March Songs" is a chorus of revolution and a revolution of chorus. The chorus of revolution refers to the content of "Long March Songs" and describes the whole process of the Long March. The revolution of chorus is about form. It breaks through the original form of chorus wearing a dress and standing on the stage like a wall, adding performances, actions and scenes, which is very visual and makes the audience enjoy and be satisfied. "

　　　　　　 Wang Shuli, a violinist who also premiered, is currently the head of the Chorus Art Troupe of the old comrades-in-arms. He said that the reason why the Long March Ensemble is praised as a classic work in chorus is that it has achieved "three unifications".

Walking through Qian Shan

Highlight the revolutionary responsibility

　　　　　　 A landmark classic works, the reason why it can be sung so far, the reason why it can move people’s hearts, this is inseparable from its artistic creation. Every time I recall this past, I have been performing for more than 50 years, and Ma Ziyue, the bass singer who has performed more than 1,000 Long March Songs, is still impassioned.

The image is full of glory

Classic eternal inheritance

　　　　　　 In the process of creation, rehearsal and performance, The Long March Songs received the cordial care and guidance from Premier Zhou Enlai. After the premiere on August 1, 1965, Premier Zhou watched the Long March Songs three times in a month on August 6, August 24, August 27, and learned every song. In the same year, 18 members of the choir also visited Albania with Premier Zhou, including Han Rongshi, Ma Ziyue and Yang Zhenhui.

　　　　　　 Premier Zhou, who loves "Song of the Long March" so much, only left a group photo with the members. Speaking of this past, the 87-year-old grandmother Xie Gongcan, the former conductor assistant of the Long March Songs, was still very excited.

　　　　　　 As an epic red classic, "Long March Songs" has been sung all over the country, infecting generations of Chinese people, and has been sung ever since. It has been 55 years since it premiered in 1965. Although they were full of youthful hair, they still used their songs to inherit the Long March Songs and carry forward the spirit of the Long March. Today, on the stage of "Singing in the Age of Music", they are once again dressed in battle, and continue to present us with the original classic chapter with the passion of that year.

"Singing in Old Age, National Chorus Competition for the Elderly"

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Xinhua News Agency, Beijing, March 23rd (Reporter Hu Hao)The case of illegal operation of vaccines in Shandong has recently aroused public concern about vaccines: what will happen if vaccines are not transported through the cold chain? Worried that the vaccinated vaccine is invalid, do you want to replant it? What’s the difference between the first-class vaccine and the second-class vaccine in transportation and use? At the media forum organized by the National Health and Family Planning Commission on the 23rd, experts from China’s immunization program answered questions of general concern.

Why should vaccines be refrigerated? How terrible is a vaccine that is not refrigerated?

Zhao Kai, academician of China Academy of Engineering and chairman of the National Committee of Experts on Immunization Planning: Vaccines are biological products made by various pathogenic microorganisms. Some vaccines are attenuated viruses, for example, the main component of measles vaccine is attenuated measles virus, which is alive; Have a plenty of inactivated vaccine, after the bacteria are inactivated, it is an active protein, which plays an immune function.

Therefore, vaccines are delicate. For example, vaccines are afraid of heat and light, and sometimes some vaccines are afraid of freezing. In order to keep the vaccine active, cold chain should be used in transportation.

Generally speaking, if there is no cold chain during the storage and transportation of the vaccine, the activity of the vaccine will be affected more or less, but it is also related to the length of time and temperature outside the cold chain.

As for whether vaccines that have not been transported by cold chain will have adverse vaccination reactions, two factors need to be integrated. One is to investigate the cold chain situation of illegal vaccine transportation, and the other is to investigate the monitoring situation of the information management system for suspected adverse vaccination reactions.

Wang Huaqing, MD, Chief Physician of China Center for Disease Control and Prevention: Theoretically, the vaccine involved is a vaccine produced by a regular manufacturer, not a fake vaccine or a fake vaccine. It has quality control in the early stage, and the safety risk will be less. The impact of not having cold chain transportation in the later period needs to be evaluated.

What is the relationship between class I vaccine and class II vaccine? What’s the difference between management?

Wang Huaqing: A class of vaccines includes three situations. First, 14 vaccines designated by the state prevent 15 diseases. Second, the increase of the provincial health administrative department is included in the national immunization plan. The third is the emergency immunization organized by the government. For example, if there is an epidemic, emergency immunization is needed, or it is possible to predict that the disease will become popular and organize group vaccination, which all belong to the first type of vaccine.

The first type of vaccine is vaccinated free of charge; The second kind of vaccine is self-funded and voluntary.

The management of the second type of vaccine is technically the same as that of the first type of vaccine. The technical requirements are the same whether in circulation or use. However, its procurement methods are different and its supply channels are different. The procurement of the first type of vaccine is carried out by the government, and then distributed step by step through the disease control system, and finally to the inoculation unit. The second type of vaccine is based on the regulations on the management of vaccine circulation and vaccination. Production enterprises can supply it directly to business enterprises, or to disease control departments and vaccination units. Business enterprises can supply disease control institutions, vaccination units or other business enterprises. So the channels are different.

Is there any difference in quality between domestic vaccines and imported vaccines?

Zhao Kai: The technological level of domestic vaccines is completely similar to that of foreign countries. In particular, the quality of vaccines, China’s 2010 edition pharmacopoeia and the European Union’s pharmacopoeia standards are the same. Some domestic vaccines and imported vaccines have been compared or observed, and they are all the same.

Every batch of vaccines produced in China must undergo compulsory inspection and audit before they are put on the market, which is called "batch inspection". Those that fail are not allowed to go on the market. I think this quality is guaranteed.

Wang Huaqing: Actually, domestic vaccines and imported vaccines require the same standards, and they will not enter the market until they reach the standard. Most of our country uses domestic vaccines, and the control of infectious diseases in China is the contribution of domestic vaccines. If there is no domestic vaccine, the control of polio, hepatitis B and measles in China will not be so good. These are all the effects obtained by inoculating children with our own vaccines. Therefore, the final evaluation depends on whether the disease has been controlled after the application of the vaccine and whether its suspected abnormal reactions have increased. In fact, from our monitoring, there is no big difference between domestic and imported vaccines.

How to deal with vaccines near the shelf life? Is it possible to vaccinate the public with expired vaccines?

Han Cheng, director of Desheng Community Health Service Center in Xicheng District, Beijing: As a primary health service center, our vaccine procurement path is very strict, and there are also strict regulations on the validity period. Drugs that have expired in the past six months cannot enter the procurement and distribution system, and the system will automatically block them. It is impossible to enter the organization. In addition, the purchase of vaccines is on a monthly basis, and one batch is used up before entering the second batch, and it is cleaned once a month, and it is uniformly distributed and purchased by the Beijing Center for Disease Control and Prevention.

How do I know if my vaccine is a problem vaccine? Can it be traced back?

Han Chengcheng: The batch number of the vaccine can be traced back. Each child has a batch number corresponding to each medicine, which can be checked. Therefore, it can be traced back to which child a batch number was hit. The validity period of the vaccine, the time of vaccination, etc. are also completely traceable.

Wang Huaqing: When the vaccine enters the disease control system, there will be a receipt form, when it was delivered, the process of delivery, its temperature, the varieties delivered and the quantity, all of which have a complete receiving record. In the process of use, there are two records, including the parents’ signature, when and what vaccine the children took, which company and the batch number. One is the vaccination certificate in the hands of the parents, and the other is the record or vaccination card of the electronic information system.

Is it necessary to confirm whether the vaccine is effectively vaccinated by antibody testing? Is it necessary to replant the vaccine?

Wang Huaqing: If you were not vaccinated in childhood, when should you replant? Different vaccines are different, which needs to be judged again.

We are all very concerned. Did I succeed after the vaccination? The international general principle is that there is no need for testing, because if the vaccine reaches a high vaccination rate, the whole population will have a barrier.

Vaccination, under normal circumstances, does not mean that everyone produces protection, because the main function of vaccine is a group. For example, if 80% to 85% of polio is successful after taking sugar pills, polio will be blocked and eliminated.

If everyone is vaccinated, we will build this crowd barrier. If some people are vaccinated and some people are not vaccinated, the disease may become popular in the future. Therefore, to control an infectious disease, we must maintain a very high vaccination rate in vaccination, especially in the use of vaccines in the national immunization program. If the vaccination rate is not high, then the disease will become popular.

Machine heart report

Editor: Chen Ping, Du Wei

Have you ever seen a drone that can withstand a strong gust? Researchers at the California Institute of Technology use deep neural networks to make drones no longer afraid of the wind.

When the wind is strong enough to blow out the umbrella, the drone is steady, like this:

Flying against the wind is a part of air flight. On a large scale, when pilots land their planes, the wind speed may bring them challenges. On a small scale, gusts will also affect the flight of drones.

At present, drones either fly under controlled conditions and have no wind; Or operated by humans using a remote control. Unmanned aerial vehicles are controlled by researchers to fly in formation in the open sky, but these flights are usually carried out under ideal conditions and environments.

However, in order for UAVs to perform necessary but daily tasks autonomously, such as delivering packages, UAVs must be able to adapt to wind conditions in real time.

In order to make the UAV have better maneuverability when flying in the wind, a group of engineers from California Institute of Technology developed a deep neural network Neural-Fly, an artificial intelligence tool, which can keep the UAV agile in windy conditions, and only need to update some key parameters to help the UAV cope with new and unknown wind conditions in real time.

At the beginning of the article, we have seen the wind resistance of the UAV. The following shows a quadrotor UAV. With the help of the tool developed by this research, it can complete the figure-eight shuttle operation when the wind speed reaches 27 mph:

Watch the drone flying against the wind from another angle;

In order to allow the UAV to shuttle in various wind speeds, data is essential. This research needs little data. After obtaining the flight data in just 12 minutes, the automatic quadrotor UAV equipped with Neural-Fly learned how to respond to strong winds. "The amount of data used is very small," said Michael O’Connell, a graduate student in the Department of Aeronautics and Astronautics at California Institute of Technology and one of the authors of the paper.

The study was published in the journal Science Robotics on Wednesday.

Address: https://www.science.org/doi/10.1126/scirobotics.abm6597.

ArXiv Address: https://arxiv.org/pdf/2205.06908.pdf

In the Neural-Fly experimental training, the UAV flies in the wind tunnel with six different wind speeds, the fastest of which is 13.4 mph.

Based on these data, the team created a deep neural network, and then enabled their aircraft to skillfully maneuver in the same wind tunnel, such as enlarging the gate in a figure-of-eight pattern or cruising through two oval gates. The speed of the drone in the test is faster than it encountered in the training: about 27 miles per hour. This is the maximum wind speed that the wind tunnel can produce, pointed out Shi Guanya, the author of this paper and a graduate student of California Institute of Technology. Except that only a small amount of data is needed, the software only runs on Raspberry Pi, which is a cheap computing device.

Soon-Jo Chung, a professor of aerospace, control and dynamics systems at California Institute of Technology and a correspondent, said that the error rate they saw was 2.5 to 4 times better than that of the existing SOTA technology.

The picture below shows Shi Guanya, Soon-Jo Chung and Michael O’Connell from left to right. Congratulations, Shi Guanya will join the Robotics Institute of Computer College of Carnegie Mellon University as an assistant professor in September 2023.

The researchers said that this technology will be used for drone express delivery or flying cars in the future.

Overview of Neural-Fly technology

If unmanned aerial vehicle (UAV) wants to realize continuous commercialization, it is very important to perform safe and accurate flight maneuvers in dynamic high-speed wind. However, because the relationship between different wind conditions and their influence on the maneuverability of UAV have not been deeply studied, it is challenging to design an efficient robot controller using traditional control design methods.

"Neural-Fly" proposed by researchers of California Institute of Technology is a data-driven method. As a trajectory tracking controller based on deep learning, it can learn to adapt to rapidly changing wind conditions. Figure 3(A) below shows the data collection process; 3(B) When the wind speed is 13.3km/h (3.7m/s), input and label the training data; 3(C) is the distribution of input data and label data under different wind conditions.

On-line Adaptive+Off-line Meta-learning

Figure 2 below is an overview of the Neural-Fly method, which shows that it has made progress in adaptive flight control and robot control based on deep learning. Under the dynamic wind conditions of standard UAV, Neural-Fly can track the centimeter-level position error of flexible and challenging trajectory. Specifically, this method mainly consists of two parts, namely, offline learning stage and online adaptive control stage for real-time online learning.

For the off-line learning stage, the researchers developed Domain Adversarial Invariant Meta-learning (DAML), which learned the expression of deep neural network (DNN) which is independent of wind conditions in a data-efficient way. This representation adapts to different wind conditions by updating the linear coefficients of a set of mixed depth neural network outputs.

DAIML also has data efficiency, and only 12 minutes of flight data under six different wind conditions are used to train the deep neural network. DAIML contains several key features, which can not only improve data efficiency, but also provide information by the downstream online adaptive control stage.

It is worth noting that DAIML uses spectral normalization to control the Lipschitz property of deep neural network, so as to improve the generalization ability of unknown data and provide closed-loop stability and robustness. In addition, DAIML also uses discriminant network to ensure that the learned representation is wind-invariant, and the wind-related information is only included in the linear coefficient that adapts to the online control stage.

For the on-line adaptive control stage, researchers developed a regularized compound adaptive control law, which is based on the basic understanding of how the learned representation interacts with the closed-loop control system and has strict theoretical support.

Specifically, the adaptive law uses the combination of position tracking error term and aerodynamic prediction error term to update the linear coefficient related to wind. This method effectively ensures the stability and rapid adaptation to any wind conditions and the robustness to imperfect learning. Although this adaptive control law can be used with many learned models, the accurate representation learned from DAIML is helpful to further improve the adaptive speed.

experimental result

As far as the effect of Neural-Fly is concerned, it is 66% higher than that of nonlinear tracking controller, 42% higher than that of L_1 adaptive controller and 35% higher than that of incremental nonlinear dynamic inversion (INDI) controller. All these results are achieved by using standard quadrotor UAV hardware, and the default attitude control of PX4 is running at the same time.

The tracking performance of Neural-Fly is competitive even compared with related work without external wind interference and using more complicated hardware (such as on-board optical sensor that needs 10 times control frequency and uses DC motor speed feedback).

Table 1 below shows the error tracking statistics of different methods under different wind conditions.

The researchers compared Neural-Fly with two variants, namely Neural-Fly-Transfer and Neural-Fly-Constant. Among them, NF-Transfer uses representations trained from data of different UAVs, while NF-Constant only uses adaptive control laws with trivial non-learning basis.

Neural-Fly-Transfer shows the robustness to UAV configuration changes and model mismatch. NF-Constant, L_1 and INDI methods all directly adapt to unknown dynamics without assuming the underlying physical structure, and they have similar performance.

Finally, the researcher proves that Neural-Fly can realize a series of functions, allowing the UAV to follow the trajectory and fly over the low-altitude door quickly under the condition of strong wind, as shown in Figure 1 below.

Reference link:

https://www.science.org/doi/10.1126/scirobotics.abm6597

https://www.popsci.com/technology/neural-fly-ai-drone-in-wind/? THE END

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Original title: "Have you ever seen a drone that can hold strong winds? Caltech teaches drones to fly against the wind with 12 minutes of flight data.

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If we go back to 2003, no one can predict how much weight the Post Bar born in that year will occupy in Baidu’s territory. However, in the next 12 years, Baidu Post Bar has steadily and steadily become an important position with a huge number of users and occupying the only social product in Baidu’s entire product system. The various attempts of the business model of Post Bar can also be regarded as a microcosm of the commercialization exploration of China’s online social platform.

From the original forums, Blog, SNS, alumni records, Renren. com, and the rise of Weibo and WeChat in recent years, the wave of social platforms has changed. Many products that once resounded across the country can only survive or even disappear, but the post bar is enduring. The huge user scale, coupled with multi-dimensional and highly segmented groups such as interest, region and identity attributes, makes Post Bar with huge traffic and massive precipitation content become a "gold mine" with great potential.

But even with "the right time, the right place and the right people", Baidu Post Bar has always been alert and cautious, committed to finding the best balance between user experience and commercialization, and slowly carried out various attempts to adjust its own rhythm.

The commercial potential of the post bar detonated by the draft of Xiao He Lou Jiao twelve years ago

In 2003, as the forum (discussion area) began to gradually transfer from four portals to Tianya, Xici, Maopu and other websites, the concept of Blog was still in the initial stage of brewing. Baidu seized this good opportunity to create Baidu Post Bar, which not only enriched the content results of Baidu search engine, but also helped Post Bar quickly accumulate initial users with the help of the long tail effect of search.

During this period, the whole Internet form began to move from the 1.0 era of one-way communication to the 2.0 era of two-way interaction, and the interaction desire of young netizens that had been suppressed for a long time was stimulated intensively, and the product form of Baidu Post Bar just effectively filled this user demand, so it quickly gathered a very high platform popularity.

In 2005, the "Super Girl" draft held by Hunan Satellite TV showed people the power of fans, and also let Post Bar taste the dividend of fan culture. A large number of fans gathered in the super girls’ post bar and had a heated discussion for a long time. Alexa data at that time showed that with the help of Baidu Post Bar, Baidu’s traffic surpassed Sina in one fell swoop and became the largest Chinese website in the world. The first appearance of fan power made people inside and outside the industry smell the great commercial value lurking in Post Bar. However, because the online marketing model was relatively simple at that time, Post Bar did not rush to pursue profit speed, but put the depth of cultivating platform in the first place.

Leverage the Olympic Post Bar to test fan marketing.

Since 2008, the Internet in China has entered the golden age of rapid development. The surge in the number of netizens and the emergence of mobile Internet have spawned various online marketing models. Baidu Post Bar, which has a huge user scale and huge traffic advantages, has also begun to explore the diversified direction of commercialization.

During the Beijing Olympic Games, Baidu Post Bar cooperated with Adidas, Yili and other first-line brands to plan a series of marketing activities, and introduced the Olympic enthusiasm of netizens into the Post Bar. The marketing of this big event successfully attracted a large number of bar friends to participate.

In 2009, Baidu Lighthouse, the first interactive marketing product in China, was officially launched, focusing on tapping the precise marketing value of Post Bar.

In 2010, the launch of "Post Bar Mall" made it possible to realize social traffic. Props, value-added applications, personalized services, etc. made Post Bar earn C-end income, and at the same time, it greatly promoted the activity of Post Bar and improved the user system.

During the London Olympic Games in 2012, Baidu Post Bar became the main battlefield of online Olympic marketing. Taking Coca-Cola as an example, it selected 30 post bars including Sun Yang Bar, Chen Yibing Bar, Liu Xiang Bar and Gymnastics Bar, and posted in the selected post bars through official accounts to cheer for Olympic athletes, and naturally implanted interactive activities with specific themes to promote and solidify its brand. The promotion of Coca-Cola in the Post Bar has covered more than 10 million people, the brand has been displayed as high as 30 million times, and the video has been played 100,000 times. At that time, Weibo was in full swing, and some even declared it as "the pulse of the earth", but advertisers did not dare to ignore Baidu Post Bar. The deep interaction among users of Post Bar can quickly touch, transform and expand the fan base, forming an ecological closed loop of multi-directional, in-depth, efficient and self-growing fan marketing, which is the core advantage that Weibo platform does not have.

Looking back on the period from 2008 to 2013, it was the adolescence of Internet in China. The characteristics of active but restless users not only increased the commercialization opportunities, but also brought greater challenges to the realization of traffic. Fortunately, Baidu Post Bar’s several attempts have not only failed to drain users, but also gained great recognition, especially the cooperation activities during the two Olympic Games have become classic online marketing cases.

Force community fan marketing to dig deep into the value of post bar platform

2014 seems unremarkable, but there are two figures that make this year destined to go down in the history of Internet development in China.

In this year, Internet users in China approached half of the total population for the first time, and the scale of mobile phone users surpassed PC users for the first time. Because of this, the commercial focus of China has also shifted from offline to online, and enterprises have entered an era that needs in-depth communication with consumers. Some people therefore call 2014 the beginning of the Internet 3.0 era. In this context, the commercialization process of Baidu Post Bar began to rapidly enter the rising channel.

In July 2014, Baidu Post Bar announced the official launch of the enterprise platform strategy, and established a fan community for enterprises, institutions, media and other partners by opening the official post bar. This move attracted many powerful enterprises in the media, technology, finance and other industries to settle in. Mobile phone brands such as Meizu and Xiaomi regard the official bar as the most important marketing position.

For vertical industries with broader themes such as "beauty" and "education", Baidu launched the "Post Bar Partner" model in 2015, which opened the operation rights of vertical post bars to partners, provided more professional services for users of related bars, and also expanded its own profit model.

With the help of 100,000 stars and 300 million fans, Baidu Post Bar built the brand of Post Bar Entertainment, which quickly entered the film marketing industry in 2015, making Baidu Post Bar one of the most important film and television marketing platforms. The Nine-story Demon Tower with Ghost Blowing Lights jumped to glutinous rice through the related star bar header, and about 200,000 tickets were issued. Popular variety shows such as Running Man have been deeply interacting with fans in the post bar for a long time. IP-adapted writers of popular online literature such as "God of Heaven" and "Who’s Youth is Not Confused" have all held huge casting activities in their respective post bars, and achieved good results.

The longevity of post bar comes from the youthfulness of core users. According to the data, more than 60% of the 12-year-old Baidu Post Bar’s active users in 300 million months are post-90s. They grew up in the Internet age and are deep Internet users. Among them, 80% of users’ behaviors come from the mobile terminal. Post Bar users not only have strong spending power, but also are generally willing to accept new things. These user characteristics are the natural advantages of Post Bar itself. Throughout the commercialization process of Post Bar, every attempt is centered on the experience of these users, keeping up with the development trend of the Internet, and adapting to the changing rhythm of consumer behavior to the greatest extent. After a series of explorations, the gap between commercialization and users is gradually bridged by Post Bar.

For the Internet social platform, realizing traffic is both a paradise and a hell. If you are not careful, it will slide to the bottom. Along the way, Baidu Post Bar finally crossed the threshold of realizing with the mentality of taking the Long March. This year marks the 12th anniversary of Baidu Post Bar. In the traditional calendar of China, 12 years is the end of a cycle and a new beginning. As the Internet goes deeper and deeper into people’s lives, the prospect of achieving a win-win situation in products and business is more and more promising.