[Kehai Tide Watching]

　　In the past few years, a large number of innovative technologies have emerged in the field of artificial intelligence, and key breakthroughs have been made in the fields of autonomous driving, voice and image recognition, medical diagnosis, intellectual competitive sports, etc. Intelligent scenes that people once could only imagine in science fiction movies are quietly coming, and an intelligent era full of infinite possibilities has been fully opened.

　　Artificial intelligence with several ups and downs

　　Artificial intelligence is not a new concept in science. As early as half a century ago, computer science giants represented by Turing, Weiner, McCarthy, Shannon and so on began to explore artificial intelligence scientifically. Turing took the lead in putting forward the basic proposition of artificial intelligence "Can machines think" in his paper "Computing Machines and Intelligence" published in 1950, and designed the famous "Turing Test" — — If a machine can start a dialogue with human beings without being identified as a machine, then the machine is intelligent, which has become the first research to define the standard of artificial intelligence from the scientific level. At the same time, Wiener put forward the famous "cybernetics" and discussed the unity of machine and human — — People or machines accomplish a certain purpose through feedback, which reveals the possibility of simulating people with machines and lays an important foundation for the proposal of artificial intelligence. In 1955, McCarthy, Minsky, Shannon and others, as co-sponsors, invited a group of scholars to discuss Artificial Intelligence at Dartmouth College in the United States, and used the term artificial intelligence, which led to the rise of artificial intelligence scientific research.

　　Although artificial intelligence has always attracted the attention of the scientific community, due to the constraints of basic technical conditions such as computing power, algorithms and data, artificial intelligence technology and commercial development have not been smooth sailing, and even once fell into a trough. Until May, 1997, IBM computer system "Deep Blue" defeated Kasparov, the world champion of chess, which once again triggered global attention to artificial intelligence. Since then, Professor Hilton of the University of Toronto in Canada has made a key breakthrough in the field of artificial intelligence with deep learning as the main technical line. Artificial intelligence has been applied in natural language processing, speech recognition, image recognition, machine translation, fraud detection, product recommendation, etc. In addition, mobile Internet, cloud computing, big data and Internet of Things have matured and formed a technical community effect, providing a technical environment for the technological breakthrough of artificial intelligence. A number of IT giants such as Google, Microsoft, IBM, Facebook, Baidu, Tencent, etc. also foresaw the commercial dawn of artificial intelligence and accelerated the industrial layout of artificial intelligence. In October 2016, the then US President Barack Obama released the report "National Strategic Plan for Artificial Intelligence Research and Development" at the White House Frontier Summit. This strategic plan, known as the new "Apollo Moon Landing Plan" in the United States, marked the US government’s emphasis on artificial intelligence, and artificial intelligence has reached a turning point of breakthrough.

　　According to the development stage and level of artificial intelligence, some foreign experts divide artificial intelligence into three stages: Artificial Narrow Intelligence (ANI), Artificial General Intelligence (AGI) and Artificial Super Intelligence (ASI). Weak artificial intelligence is good at unilateral ability, such as only having the intelligence to play chess. Strong artificial intelligence refers to artificial intelligence that has the same cognitive ability as human beings in all aspects; Super artificial intelligence refers to surpassing the limits of human intelligence in all fields. Generally speaking, human artificial intelligence is still in the stage of weak artificial intelligence moving towards strong artificial intelligence.

　　Cutting-edge technology that subverts the future

　　As a subversive technology with "singularity" characteristics, artificial intelligence can not only drive a new round of scientific and technological innovation and economic growth, but also overcome a series of development difficulties faced by human beings in the fields of transportation, environment and health care, thus creating a new paradigm for global economic and social development.

　　In 2016, Accenture, a famous consulting firm, released a report saying that artificial intelligence will become the driving force for a new round of global economic growth. By 2035, by changing job attributes and creating new man-machine relationship, artificial intelligence will double the economic growth rate, and the problems that have plagued the world economy for a long time, such as production stagnation, resource mismatch and labor shortage, will be solved, and people will be able to get out of "inefficient" work and do truly efficient and creative work.

　　Intelligent transportation and unmanned driving are the key areas of artificial intelligence development at present. In the future, the transportation facilities with artificial intelligence application will not only include passenger cars, but also trucks, aircraft and personal robots. Automated transportation will be everywhere, and cars will become better drivers than humans. Intelligent transportation systems will effectively overcome urban traffic jams and parking difficulties, reduce the incidence of car accidents and reduce automobile emissions, and there will be fewer private cars for urban residents, thus changing the overall appearance of the city and bringing a brand-new form of urban organization.

　　Artificial intelligence will also make great achievements in the medical field, which will help mankind overcome a series of medical problems to a great extent and solve the problem of uneven distribution of medical resources. Take IBM Watson as an example. An expert from the Medical College of the University of North Carolina in the United States asked Watson to analyze and diagnose more than 1,000 cancer cases. It was found that Watson gave the same treatment plan as a human oncologist in more than 99% of the cases. A Tokyo woman with leukemia was sentenced to death by a doctor, but Watson read the relevant 4,000-meter-thick medical materials within 10 minutes and gave a treatment plan to save her. Recently, a teenager in Britain underwent medical surgery based on artificial intelligence technology and got rid of epilepsy for seven years. The doctor asked the robot to drill into his brain, stimulated the cerebral cortex through electrodes, and found out the part that caused the seizure. The doctor removed the lesion.

　　An out-of-control problem of no trial and error

　　When artificial intelligence technology continues to reshape people’s work, study and lifestyle, and brings infinite happiness to mankind, it is also generating more and more open problems.

　　1. Artificial intelligence is out of control. It is an ancient and ultimate problem of artificial intelligence whether it can keep control of an artificial intelligence system that is far smarter than human beings one day. The problem of control and out-of-control is so important because human beings may not have the opportunity to try and make mistakes at all. Although it is generally believed that the existing artificial intelligence technology is still in the stage of weak artificial intelligence, many experts believe that the era of super artificial intelligence is not far away, and the form of super artificial intelligence can realize recursive self-improvement and lead to the final "intelligent explosion". In 2008, a survey of experts at the Global Catastrophic Risk Conference held in Oxford University showed that machine super-intelligence has surpassed nuclear war, various manipulated epidemics and climate change to become the greatest threat to mankind. By 2100, the possibility of this artificial intelligence leading to human extinction is 5%. In this regard, the author of "A Brief History of the Future" and Israeli historian Herali pointed out three possible directions for human beings: human beings will lose their economic and military uses, and the economic system will no longer be valuable; For the system, human beings as a whole will have value but individuals will have no value; However, the system will find value in some individuals, but they will become a new species of superman, not the general public. "System" refers to a new social form produced by the rapid development of biological science and information technology.

　　2. Machine discrimination. In the Internet of Everything environment, artificial intelligence systems based on massive data and powerful algorithms are influencing or even replacing individual behavior decisions. Under the trend of artificial intelligence replacing individual decisions, algorithm deviation and machine discrimination are not uncommon and have great influence. For example, Google’s photo software has wrongly labeled black people as "gorillas", and Flickr’s automatic tagging system has also wrongly labeled black people’s photos as "apes" or "animals". The problem of Google’s algorithmic discrimination has attracted people’s attention. In Google search, it is easier to find advertisements implying a criminal history than searching for white people’s names. In Google’s advertising service, men see more high-paying job advertisements than women.

　　3. Skilled unemployment. Technical unemployment is also a major challenge arising from the development of artificial intelligence. Kaplan, a professor of artificial intelligence and ethics at Stanford University, believes that the most important challenge for human beings to deal with artificial intelligence lies in the change of labor force and the distribution of wealth in the whole society, which has an impact on the stability of the existing society. Schwab, chairman of the World Economic Forum, also pointed out that the wide application of high technology in computer-controlled, fully automated and networked production and service industries, such as the use of robots, may lead to the loss of a large number of jobs in the future.

　　4. Human-machine emotional ethics. The development of artificial intelligence technology will lead to the subversion of traditional human ethics. In the autumn of 2015, the British BBC and CNBC reported that an American company had created a female image "sex robot", and the person in charge of the company believed that the product could help the widowed solve their life troubles. It is reported that the robot presupposes a variety of personality patterns, such as "communicative" and "obedient", but the product has aroused extensive ethical discussion.

　　As Hassabis, the founder of DeepMind, said: "Artificial intelligence is a great technology. It is neutral in itself and may be used in good places or bad places, so we must ensure that its users are responsible." In this regard, the United States, Britain, Japan, as well as the United Nations, the European Union, IEEE and other international organizations have issued strategies, laws, standards and norms of artificial intelligence, hoping to promote the healthy development of artificial intelligence technology and industry through the guidance of artificial intelligence policies and ethics. We should scientifically regulate artificial intelligence from laws and regulations, social security, technical standards and application norms, so as to promote the healthy development of artificial intelligence technology and industry and prepare for the future of artificial intelligence.

　　 (Author: Hui Zhibin, deputy director of Internet Research Center of Shanghai Academy of Social Sciences)

Recently, Zebra Encyclopedia, the first 3D interactive encyclopedia for children in China, launched a new theme "Aerospace", which is its 13th theme. It is understood that in response to the expectations and needs of users, Zebra Encyclopedia has launched a new theme every month since 2024. In the first quarter alone, it has launched "Paleozoic animals", "revealing food" and "aerospace", constantly enriching the contents of nature, humanities and technology, and helping children to establish a scientific and complete cognitive framework. The theme of "Aerospace" launched this time is the second scientific and technological theme after "Physics in Life", and it is also one of the themes with the highest voice and expectation from users.

As the first 3D interactive encyclopedia for children in China, Zebra Encyclopedia is a digital content for children aged 5-12. This time, the theme of "Aerospace" was launched, with a total of 12 episodes of video content, including 200+ aviation and aerospace-related knowledge points, presenting 30+ kinds of aircraft, carrying out 96 interesting AI interactive exercises, and combining 3D animation film-level production with 2D cartoons to sum up popular science, helping children feel the development process and real origin of human flying dreams in all directions.

As the digital content of popular science encyclopedia in the new era, the professionalism, systematicness and scientificity of encyclopedia cognitive system have always been the core advantages of Zebra Encyclopedia. Then, what knowledge points should be covered under the theme of "aerospace"? How to explain these profound and far-reaching contents to children aged 5-12? How can we make children "immersed" in a professional and complete knowledge framework? These are the focus of the zebra encyclopedia team’s deep thinking. In order to build a scientific and complete aerospace knowledge framework, Zebra Encyclopedia has set up an excellent R&D team, including a research team, a teaching and research team, an expert team and a production team. Each team has deeply participated in and professionally delivered the content in their respective fields. Taking the team of experts as an example, Zebra Encyclopedia has introduced a number of expert groups above doctoral level for the aerospace field, and deeply participated in the production of all videos on this theme, including the outline, script, model, animation, theme selection, knowledge point demonstration and other details.

(Aerospace theme 3D screen screenshot)

At the same time, the three themes of "Aerospace", "Paleozoic Animals" and "Revealing Food", which were launched in 2024, all continued the professional standards of Zebra Encyclopedia in terms of quality and content. Taking the theme of "Aerospace" as an example, depending on the realistic 3D animation effect and high-precision 3D model, each frame of the picture is of film-level 3D quality, which can not only restore the real shape of each spacecraft in all dimensions, such as comprehensiveness, details, interior and exterior, but also simulate real scenes such as launch and flight, which is the best form for children to learn aerospace knowledge on the spot.

According to reports, in order to achieve super-high quality film-level 3D image quality presentation, Zebra Encyclopedia has set up a visual effects professional with more than 100 people, and each picture detail will go through more than 20 rounds of strict review, more than 100 R&D processes and tens of thousands of polishing, which has invested hundreds of millions of production costs. The theme of "Aerospace" alone, 12 episodes of video content cost 30,000+hours of fine polishing, with a total of 160,000+frames of exquisite 3D animation, which helps children to observe the structure of aerospace vehicles in an immersive and multi-dimensional way, learn the diversity and operation knowledge of aircraft types, cultivate children’s observation, thinking, imagination and firm willpower, and cultivate the aerospace spirit of selfless dedication, fearlessness and exploration while stimulating children’s interest in learning.

(Aerospace theme 3D screen screenshot)

In addition, Zebra Encyclopedia’s 3D voice illustration function has been newly upgraded, which has been loved and recommended by many encyclopedia users, and the theme of "Aerospace" has also matched this function synchronously. "Children can not only observe the whole picture of each spacecraft in 360 degrees, but also make a comprehensive, complete and detailed observation by zooming in and out or rotating, and can also consolidate it repeatedly to strengthen understanding and memory." A senior parent user of Zebra Encyclopedia said.

(Screenshot of 3D voice illustration screen)

In order to consolidate the learning effect, the theme of "Aerospace" has also set up 96 AI interactive fun exercises to explain difficult knowledge points with 2D cartoons to stimulate children’s interest in learning and desire to explore. While learning aerospace knowledge with video content, children will also easily master a large number of knowledge points in the real-time interesting interaction of AI, so that children can "see and remember" and absorb encyclopedia knowledge subtly.

(Screenshot of 2D picture of aerospace theme)

As a boutique digital content for children in the new era, Zebra Encyclopedia continues to help children build a cognitive system of the new era encyclopedia with professional, systematic and scientific popular science digital content. Up to now, Zebra Encyclopedia has launched 13 topics, including insects, astronomy, birds, plants, marine animals, dinosaurs, human bodies, physics in life, mammals, ancient world civilization, Paleozoic animals, revealing food, aerospace, etc. In the future, it will continue to expand the theme of popular science content around the fields of nature, humanities, science and technology, create a systematic, professional and scientific knowledge framework for children, and help children build a new era encyclopedia.

It is reported that Zebra has been deeply cultivating digital content and AI technology for a long time, and the technology-driven digital publishing has achieved remarkable innovation results. At present, it has formed a digital publishing system including Zebra App, Little Scabber, Zebra Encyclopedia, Zebra Playing Teaching Aids and Zebra Children’s Books. In the future, Zebra will continue to optimize the combination ability of AI technology and content research and development, continue to launch high-quality products related to children, create digital publishing products in the new era, and promote the integration, innovation and development of digital publishing industry.

　　6th

　　Xin’ an riverside

　　Qingshan lvshuijian

　　Zhejiang Jiande 2022 Xin ‘anjiang Marathon started shooting.

　　On the track

　　A pair of special contestants caught everyone’s attention

　　A middle-aged man in a dark blue sports vest

　　Pushing a tricycle.

　　In the cart

　　The little boy sat quietly.

　　Work hard with my father towards the finish line

　　Luo Shujian and his son are participating in the competition (provided by respondents)

　　This middle-aged man

　　It’s Luo Shujian, 45.

　　From Wucheng District, Jinhua City, Zhejiang Province

　　Is a courier.

　　In the cart is his 13-year-old son Xiao Bai.

　　And this marathon

　　It’s this father and son

　　The 54th competition in 7 years.

　　The medals hung on the walls of Luo Shujian’s home (provided by the respondents)

　　One birth

　　Xiao Bai, his son, became the most reluctant person for Luo Shujian.

　　In 2009

　　Severe asphyxia lasting for 15 minutes at birth.

　　Causing xiaobai to have severe brain damage.

　　He was diagnosed with cerebral palsy shortly after birth.

　　And then appeared.

　　Mental retardation, epileptic symptoms and autism tendency

　　Later, he was diagnosed as "LGS syndrome" again.

　　This is the most difficult type of epilepsy in children to control.

　　A doctor once told Luo Shujian

　　My son needs to be taken care of all his life.

　　With the help of public welfare organizations

　　Luo Shujian and his wife took Xiao Bai.

　　Found an authoritative expert

　　Seizure symptoms of Xiao Bai

　　Also got better after using drugs.

　　But Xiao Bai still can’t talk.

　　Intelligence is only maintained at the level of children.

　　Luo Shujian and his family usually take it with them.

　　To go out for a walk.

　　Luo Shujian and his son are participating in the competition (provided by respondents)

　　once

　　Luo Shujian came across the story of Dick Huo Yite and his son.

　　This great father

　　Pushing a son with cerebral palsy

　　With more than 1000 running races

　　Run all over America along the runway

　　It is also one of the six marathons in the world.

　　Boston marathon

　　Touched countless people.

　　In 2015

　　After learning the information that the Hangzhou Marathon started to register that year,

　　Luo Shujian also wants to try.

　　In order to improve physical fitness

　　He gets up at 4: 30 every morning

　　Run at 5 o’clock in the morning

　　Go out to work after the end.

　　Be fully prepared

　　November 1, 2015

　　He took his son to participate for the first time.

　　Hangzhou Marathon 7 km Mini Run

　　And finally finished the game.

　　A cart for my son.

　　It cost him half a month’s salary.

　　Luo Shujian and his son are participating in the competition (provided by respondents)

　　On the field

　　Luo Shujian found his son Xiao Bai

　　The whole process was very exciting and happy.

　　"He likes that kind of lively scene.

　　And this desire to chase

　　Laugh and clap your hands. "

　　After discovering that my son likes it very much,

　　Luo Shujian was out of control from then on.

　　5 km, 10 km

　　Half horse, whole horse … …

　　In the past seven years, Luo Shujian has pushed his son to complete it.

　　54 games, big and small

　　Footprints are all over the country

　　Luo Shujian and his son are participating in the competition (provided by respondents)

　　For seven years

　　In the process of pushing my son to run.

　　Luo Shujian for "father"

　　Have a deeper understanding

　　"I hope to be able to run.

　　Can accompany him to walk around the country.

　　Let him come into this world without regret.

　　By running again and again like this

　　I hope he can appreciate the hardships of everyone’s life.

　　Also let him feel the warmth and strength in life. "

　　Luo Shujian said

　　Luo Shujian (third from right) is participating in public welfare activities (provided by respondents)

　　Luo Shujian hopes

　　Keep running with your son.

　　"I promised him to stand behind him all my life."

　　He smiled and told reporters

　　Meet once, and live up to this life.

　　Hail to the great father!

　　Life is precious.

　　In the wind, in the rain, on the road

　　Love makes every step

　　Full of power

　　Source: Xinhua News Agency WeChat (ID:xinhuashefabu1) Comprehensive Yangguang. com and Jimu News.

　　Reporter: Lin Guangyao, Ma Xiaoju

　　Producer: Guan Kailiang

　　Editor: Li Yongxi, Qing Shan

　　Internship: Zhang Zhuojun

　　BEIJING, Beijing, June 20 (Reporter Yue Chuan) Nowadays, every time a football match comes, female fans will become an indispensable topic on and off the court, and various versions of the "most beautiful fans" atlas in the hands of photographers are even more eye-catching tools. The European Cup in France, which is in full swing, is no exception. In this new upsurge created by football, the camp of female fans is getting bigger and bigger.

　　Although the game is not at home, there is still a time difference when watching the ball, but this does not affect the enthusiasm of the female fans around. As long as you brush your social tools, you will be surprised at the wide coverage of this special group. One after another, the crash handbook for female fans also shows that this group is becoming more and more important in the football world. For some of them, the reason why they are excited about football is not just because of their face value, but because of their true love.

　　Senior female fans: football portrays time rings crazier than boys.

　　Xiaonuo, who was born after 1980s, is a middle-level person in an enterprise, and she usually shows herself as a rigorous and capable professional woman. But as long as you hook up with football, Xiaonuo immediately looks like a different person.

　　Despite his busy work, Xiaonuo still can’t give up his love for football. Since the start of this European Cup, Xiaonuo has watched many games and stayed up all night. In order not to affect her work, most of her spare time outside watching football is used by her to make up her sleep. In the eyes of colleagues, Xiao Nuo is "torturing" herself, but she thinks it is worth it for the European Cup every four years.

　　For Xiao Nuo, the World Cup and the European Cup, which alternate every two years, have become her way of recording time.

　　Xiao Nuo first met football in 1996, which was also the European Cup. It is also because of that contest that Xiao Nuo fell in love with the German team, and it has been 20 years since then. For this figure, Xiaonuo himself seems a little surprised. "The impression of winning the golden ball in Erlhoff is still very deep. I didn’t expect time to pass so quickly."

　　Xiao Nuo recalled that at that time, because she could only see the Bundesliga and Serie A broadcasts, she had great feelings for the two leagues. Posters of Klinsmann, Baggio and batistuta had been hung in her bedroom for a long time. In order not to miss the stories around her idol, Xiaonuo accumulated hundreds of issues of football clubs and contemporary sports, at the expense of almost never eating breakfast in high school. "Younger fans may not even know these two magazines," Xiao Nuo sighed.

　　Baggio, who once charmed countless female fans, has now lost his hair.

　　Besides these, in the twenty years since she became a female fan, Xiaonuo has done many crazier things. It goes without saying that Xiao Nuo was desperate to watch the World Cup group match between China and Brazil in college.

　　"I still remember that it was June 8, and it was almost 11 o’clock after watching the game. The dormitory was turned off and the gate was closed, so I had to go back over the wall." As a result, Xiao Nuo was expelled from the school student union because of this.

　　Not only that, during the World Cup in Germany in 2006, Xiao Nuo, who had just joined the work, almost fought with male fans when he went out to watch the ball with friends. In order to get a commemorative jersey of the German team, Xiaonuo did not hesitate to mobilize all his friends around him to help, and finally entrusted someone to bring one back from abroad … … All these, there are many.

　　Xiao Nuo told reporters that her biggest wish this year is that the German team won the European Cup. But for why she loves football so much, Xiaonuo can’t give a general answer. She just said, "Like is like. If girls really like football, they will be crazier than boys."

　　Louis’ tears, Xiaoxue can understand.

　　"Ordinary" Female Fans: From "Bored" to "Tears"

　　Xiaoxue was born in 1990 and has just worked for one year. Her career as a female fan began four years ago, also because of the European Cup. In the summer vacation of sophomore year, under the guidance of friends, Xiaoxue entered the world of football.

　　Because of that European Cup, Xiaoxue fell in love with Spain and Iniesta. After the contest, Xiaoxue began to pay attention to La Liga, and then he liked Barcelona, followed by Messi, Suarez and Neymar. Now, talking about the stars who have played in Barcelona in recent years and the achievements made by the club, Xiaoxue is like a few treasures. In this competition, she hopes that Spain can defend its title.

　　Xiaoxue also told reporters that in fact, when I first started watching the ball, I felt that football was quite boring. "I didn’t score a goal for a long time. I don’t understand why everyone is so excited because of a ball game."

　　"Until the World Cup semi-final two years ago, Germany’s 7-1 massacre against Brazil, I watched the ball among a group of German fans, and I couldn’t stop crying in the first half." As a fan of Neymar, Xiaoxue had a personal experience for the first time.

　　Nowadays, Xiaoxue watches the ball every week and occasionally stays up late on weekends. Around her, there is also a small circle of female fans, and everyone will meet to watch the ball together from time to time. "By the way, I also went to the Bird’s Nest to watch the South American Derby! Super excited! " It can be seen that football has become a part of Xiaoxue’s life.

　　But even so, Xiaoxue still thinks she is a fake fans, even though she has watched more games than some boys who claim to be real fans in recent years. "I don’t have a deep understanding of tactics, and sometimes I feel quite confused when listening to the commentator analyze the game." However, Xiaoxue also said that she likes the feeling of watching the ball now and will not deliberately move closer to the "real" fans.

　　The German team now relies not only on face value, but also on strength.

　　Female fans studying abroad: Football makes me meet new friends in a foreign land.

　　Lizi is a college student majoring in Korean. She watched the ball for the first time with several Korean students. It was two years ago in the World Cup, a game in which the German team participated. Chestnut’s friend happened to be a fan of the German team, so she also liked this team.

　　However, Chestnut is a pure fake fans. Even her favorite German team, she can only name a few key players. Even so, Chestnut thinks that this will not affect her interest in watching the ball. "I didn’t know the rules very well, so I like the lively atmosphere."

　　Now, Chestnut is studying in Korea as an exchange student. In this European Cup, the German team has played two games, and Chestnut watched the live broadcast with her classmates. Among them, a small number are China students, and most of them are Koreans. In chestnut’s view, football gave her the opportunity to make new friends in a foreign land.

　　"Football is very popular in Korea. Even for girls, if there is a game on the pedestrian street, many people will stop to watch it," Chestnut told reporters. "Watching the game together has enhanced the friendship between my classmates and I have made some new friends. After all, people with common interests are easier to get along with."

　　Besides, Li Zi said that watching football can also help her change her mood, which is also a way to vent negative emotions. "After all, it is very important for me to study abroad alone," said Li Zi. (Some characters in the text are pseudonyms) (End)

　　Elephant News Oriental Jinbao reporter Gong Fengshuo correspondent He Quanyi/graphic

　　Cross history and explore cultural roots. Focus on books and feel the humanistic context. On March 18th, 2024, the 7th "Tracing China — Entering the Wei, Jin, Southern and Northern Dynasties, the launching ceremony of the historical culture and reading festival was held on the beautiful campus as scheduled, and all teachers and students participated in the ceremony.

　　First of all, President Shine Wong made a speech for this historical, cultural and reading festival. The rolling river of history and the profoundness of culture have quietly flowed into the blood of Huaxi students. President Wang not only brought the children back to the past dynasties, but also learned about the brilliant cultural and artistic achievements of Wei, Jin, Southern and Northern Dynasties. Encourage everyone to talk to history in practice, lay a foundation for life, wish everyone to meet a better self in reading, make reading a habit, and let books float all over Huaxi.

　　Northern Dynasty folk songs, Mulan legend, women disguised as men, went out on behalf of their fathers. Some students in Grade One and Grade Two of the school brought excerpts from the speech of Brother Liu from Mulan, Henan Opera, with a unique accent, lovely appearance and majestic momentum, just like an audio-visual feast, and the students called it "wonderful"!

　　During the Wei and Jin Dynasties, literature was brilliant, Jian ‘an was strong and talented. Then, all the students in Class Four and Class Four brought "Short Songs", and the students crossed time and space together to touch the beating heart of the heroes in the world. Cherish the present together and write a brilliant life with diligence!

　　Reading history can make us transparent and open-minded, and reading can make us have excellent knowledge. At the launching ceremony, the sixth-grade students Wang Jiahan, Li Yuetong, Li Zhuoyi and Li Xinyi, as students’ representatives, shared their reading achievements and issued the initiative of this historical, cultural and reading festival.

　　When spring is blooming, let’s embark on the long river of tracing China together. It is beneficial to open books, be diligent and thoughtful, broaden our horizons, strengthen our historical self-confidence and cultural self-confidence, and appreciate great ideas and splendid culture. Let books fill the campus of Huaxi, and let history fill our lives.

　　CCTV News:As the "crown jewel" of modern industry, aero-engine has always been a "heart disease" of China aviation industry. With the establishment of China’s 12th military enterprise in Beijing, Chinese people have high hopes for this aero-engine enterprise, hoping that it can achieve the same achievements as "two bombs and one satellite".

　　Yesterday, the four-day air force aviation opening activity came to an end, and more than 20 military aircraft in the 34-type domestic weapons and equipment attracted national attention.

△ On September 2, 2016, the 2016 Changchun Aviation Open Day was held in the rain, in which a variety of air force active equipment such as H-6K, JL10, JL9 and Air Police 500 were unveiled.

　　At the same time, it also brings people cold thinking: what is the current localization ratio of the big country air force, which has a huge demand for aero-engine industry, and what level has it reached? How far are we from the aero-engine power?

　　Guogui Wu Decryption: Localization has gone through the process of introduction, imitation, improvement and innovation.

　　Guogui Wu, a 57-year-old special pilot of the Air Force, holds the rank of senior colonel. He used to be the captain of the Air Force Bayi Air Show Team and the deputy division commander of an Air Force Aviation Division, with 30 years of flying experience. As an old pilot with actual combat experience, and now a professor in the post-installation teaching and research department of National Defense University, he has unique insights in studying military high-tech, air force weapons and equipment, and equipment safety management.

　　At present, what kind of level is the localization ratio and performance of aero-engines in China? Guogui Wu said in an interview that China has established an independent aero-engine industrial system in the process of industrialization, and the performance of imitation engines reached a very high level in the 1960s and 1970s.Among the main combat aircraft, domestic engines have accounted for about 90%.

　　The so-called localization here refers to the process of introduction, imitation, improvement and innovation.Due to China’s weak industrial base, in order to meet the strong military demand for aero-engines, the Soviet Union’s aid and imported production methods were adopted. On the basis of the introduction and digestion of Soviet engine production technology, the model was improved, and the scale and serialization of domestic production were gradually realized, which basically met the needs of China’s air, land and sea aviation forces.

　　In the 1960s and 1970s, the overall performance of aero-engines produced in China was not much different from the mainstream level in the world at that time. The fundamental difference was that the domestic engines were mainly imitations and modifications, and there was no engine that was completely independently developed and produced.

　　"Not only do we have no independent intellectual property rights, but we also have no core technology." Guogui Wu said, therefore, in the 1980s and 1990s, when the aviation technology of the United States, Europe and Russia developed rapidly, and the third generation fighters were generally equipped with a new generation of turbofan engines, China was still "playing around" in the improvement of turbojet engines, hesitating on the road of introducing imitation and independent innovation, and the gap between China and the world’s advanced level was not large. Not only does the new generation of fighters lack the drive of advanced engines, but the engines in service also have some quality and safety hazards, which are called "heart disease" by Chinese people.

　　Only a few third-generation aircraft of the main fighter are equipped with imported engines.

　　△FWS10 aero-engine is an advanced aero-turbofan engine designed and manufactured by China. It is installed on the domestic J -11 aircraft and can also be installed on the J -10 aircraft after modification. Now it has been mass-produced. It has become an ideal device for the third generation fighter in China.

　　After 60 years of development, China has fighter planes, bombers, attack planes, transport planes and trainers.Systematize the aircraft production capacity of many types of aircraft. In line with this, a relatively complete engine development and production system has been established, which has the series development and production capacity of turboprop, turbojet, turbofan and turboshaft engines. Domestic engines are mainly assembled on fighter planes, fighter planes, bombers, fighter bombers and other main battle planes, and only a few third-generation fighters are equipped with imported engines.

　　For example, domestic fighters such as J -5, J -6, J -7 and J -8 are adapted to corresponding domestic engines such as turbojet -5, turbojet -6 and turbojet -7. With the improvement of stability, safety and reliability of Taihang engine, it has been widely installed on three generations of fighters, such as J -11, J -15 and J -16.

　　In terms of bombers, H -5 and H -6 realized the localization of engines. The turboprop engines used in Yun -7 and Yun -8 transport planes are all made in China.

　　With the maturity of integral technologies such as Zhi -9, Zhi -8 and Zhi -10, the serial development of turboshaft -8, turboshaft -6 and turboshaft -16 engines has been realized on the basis of introduction, which provides a reliable power source for the rapidly expanding domestic helicopter fleet in China.

　　At present, China’s aviation industry is in a stage from big to strong, from following up to catching up to developing on a par or even surpassing corners. Whether it is a new generation of military aircraft such as fighters, bombers, transport planes and drones, or large passenger planes and all kinds of general-purpose aircraft, there is an urgent need for strong and reliable driving of advanced engines. The sound and rapid development of aero-engines has become the proper meaning of the "Chinese Dream".

　　Guogui Wu said frankly that the country has clearly regarded the engine as a major scientific and technological project in the medium and long-term scientific and technological development plan, and has made up its mind to concentrate manpower, material resources and financial resources to independently research and develop a series of new engines. Domestic aero-engines have entered an unprecedented fast lane of development. In this context, the establishment of China Aviation Engine Group can be said to have a long way to go.

　　Development history of aero-engines in China

　　Stage 1: imitation and improvement

　　In 1950s, China aero-engine industry started from scratch and went through a road full of thorns. In 1956, China’s first turbojet -5 engine was successfully copied in Shenyang, and for a long time thereafter, China aero-engines were mainly copied and improved.

　　Even if it is copied, it is not easy. Even if there is no operation manual, it is difficult to disassemble the aero-engine correctly. For example, there are many small holes on the leaves of several square meters and centimeters, and the location of the small holes is very particular, which is determined according to the recorded trend.

　　Until 2002, when the domestic turbojet -14 "Kunlun" engine was finalized, China completed the whole process of self-development for the first time, and became the fifth aero-engine producer after the United States, Russia, Britain and France.

　　Stage 2: successful localization by purchasing patents.

　　The engine used in the flying leopard fighter is made in China and is called "Qinling", which is alsoIt is the first engine product in China that has been patented and successfully localized.

　　From introduction to localization, it has experienced 30 years of industrial upgrading. In 1972, China contacted Britain to discuss the introduction of the civil turbofan engine from rolls royce. In 1974, during the negotiation, to our surprise, China directly obtained the patent of Spey military engine, which was a top product at that time.

　　However, despite the patent, China’s new industrial materials and other technologies were too backward at that time. It was not until 2013 that this road of localization was completed, and it was equipped on the J-H -7 Flying Leopard fighter, and Flying Leopard became the only main fighter in China that completely got rid of its dependence on imported engines.

　　Stage 3: Own independent intellectual property rights.

　　In December 2005, turbofan -10, also known as "Taihang" engine, was successfully developed and became my engine.China’s first high-performance turbofan engine with independent intellectual property rights.

　　The road to research and development of Taihang engine is also quite difficult. During the test flight, more than 200 technical problems and failures occurred successively. After hard work, the "Taihang" engine was finally equipped on the J -15 fighter and successfully made its first flight in 2012. On a group of J -20 equipment exposed at the beginning of this year, some military fans found that a J -20 was also equipped with an improved Taihang engine. Some military experts said that the "Taihang" engine can be directly equipped on the fourth generation fighter, which laid a good foundation for continuing to develop more advanced, mature and reliable engines in the future.

The signboard on the glass fence of the zoo shows that the owner of the area is a Siberian tiger cub and an African lion cub, but through the glass, tourists can see not only a little tiger cub lying on the ground and resting, but also a little yellow dog pacing back and forth. Some children ask inexplicably, "Is this an African lion?" Is this the same? "

Recently, some netizens took relevant videos in a wildlife park in Lanling County, Linyi City, Shandong Province, which triggered a heated discussion among netizens. On February 29th, the zoo staff responded that the area was originally fed with Siberian tigers, African lions and yellow dogs. They were friends who grew up together. The cubs were moved to another cage because of their different habits. At present, only the cubs and yellow dogs are left.

Northeast Tiger and Little Yellow Dog together (video screenshot)

Recently, a number of netizens who visited Baoshan Wild Animal Park in Lanling County reported that they found a Siberian tiger and a little yellow dog living together in the zoo and getting along harmoniously. The video they shot showed that two animal information boards were posted on a glass fence. One of them belongs to the Northeast Tiger Andy, who was born on June 4, 2023 and is a little female tiger. The other one belongs to the African lion Harry, who was born on June 18th, 2023 and is also a female. However, besides Andy, the Northeast Tiger, there is also a little yellow dog. A child pointed to the little yellow dog and asked, "Is this an African lion? Is this the same? " There is also a person next to him: "Isn’t this a dog?"

In this regard, some netizens ridiculed that the African lion went home for the New Year, and the little yellow dog came to the post temporarily. Another tourist told reporters that he had been to this zoo last year. At that time, besides African lions, there were also Siberian tigers and yellow dogs, and they were photographed in the same frame.

On February 29th, the reporter contacted the Baoshan wildlife park. The staff said that the cubs of the Northeast Tiger, the cubs of the African lion and the little yellow dog were good friends who grew up together. Later, because of the different habits of lions, they moved to another cage. The Siberian tiger has not grown up yet, and will live with the little yellow dog for the time being. It is also a very fun phenomenon for tigers and dogs to live together. When the Siberian tiger grows up, it will be separated from the yellow dog.

Original title: "The zoo responds to" friends of tigers and dogs "in the same room: friends who grew up together will be separated in the future"

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() According to the data center, () on February 23rd, it was financed to buy 111 million yuan, accounting for 22.34% of the purchase amount on that day. The current financing balance is 1.244 billion yuan, accounting for 4.89% of the circulating market value, which is lower than the historical 30% split level.

Financing trend table

In terms of securities lending, China Software repaid 57,500 shares by securities lending on February 23, and sold 37,300 shares by securities lending. According to the closing price of the day, the selling amount was 1,136,500 yuan, accounting for 0.22% of the outflow amount of the day; The balance of securities lending was 24.216 million, exceeding the historical 60% level.

Securities lending trend table

To sum up, the current balance of China Software’s financing is 1.268 billion yuan, up 2.19% from yesterday, and the balance is lower than the historical 30% split level.

Trend table of the balance between the two financial institutions

Note 1: If the financing balance increases for a long time, it means that the investor’s mentality is biased towards the buyer, and the market is a strong market with strong popularity, otherwise it is a weak market.

Note 2: Buying amount = actively buying extra large single amount+actively buying large single amount+actively buying small single amount.

On February 4th, beginning of spring, the earth was blooming in spring, and everything was new in the world. CCTV’s "Network Broadcast+"specially combs the old sayings quoted by the general secretary, and enjoys poetry and spring with you to realize the power of spring.

[Source]Tang Li Bai’s "Sunset Remembering the Mountains"

[Enlightenment]Spring is the beginning of the year, and spring is known to the world. The general secretary quoted this sentence to show people a wonderful picture of spring returning to the earth, everything reviving and the future being expected.

[Source]Tang Wangwei’s The Mountain and Pei Xiucai’s Dishu

[Enlightenment]Spring is a season full of confidence. The general secretary quoted this sentence to express people’s yearning and expectation for the Spring Festival.

[Source]Song Shi Le Zhi Qi

[Enlightenment]The spring breeze is getting warmer and warmer, and everything comes with life, marking a new starting point for hopes and dreams. The general secretary quoted this sentence and called on people to fight for their dreams and work together for the future.

[Source]Jin Chen Shou’s Biography of the Three Kingdoms Wei Zhi Xing Qing; Song Ouyang Xiu’s Fengle Pavilion

[Enlightenment]People are diligent and spring comes early, and forging ahead is just the time. The general secretary quoted this sentence and called on people to start from spring, advance their work at a steady pace, and exchange their unremitting efforts for fruitful autumn harvest.

[Source]Tang Li Bai’s Shang Li Yong

[Enlightenment]The journey is long, only struggle. The general secretary quoted this sentence to mobilize and inspire the whole party and the people of all nationalities in the new journey to continue to work hard for the great rejuvenation of the Chinese nation, forge ahead courageously and create greater glories.

[Source]From the Warring States Period to the Qin Dynasty, Yanzi Chunqiu, Inner Chapter and Miscellaneous Xia

[Enlightenment]Every undertaking, big or small, needs to be done down-to-earth and bit by bit. The general secretary quoted this sentence and called on people to work hard and work hard for a long time with a never-ending mental state and an indomitable attitude.

(Central Radio and Television General Station CCTV Network)