After the second launch of the "Starship" rocket, there was an explosion after the first-stage separation and the second-stage loss of contact. The US manned moon landing program was highly unlikely to send people to the moon as planned.

　　The second launch of Starship was originally scheduled for November 17th, but the launch time was postponed to 18th due to a problem with a grille rudder of the rocket, which required replacement of the driver. As the largest rocket of mankind at present, the second launch of Starship still attracts the attention of the whole world. Although it did not fully achieve the expected goal, the flight time was longer, and the first and second stages were successfully separated. Compared with the first flight, there were more technical progress and achievements.

　　A somewhat different "starship"

　　In April this year, "Starship" ushered in its first flight test, but after liftoff, it was found that many engines in the first stage were not working normally. After liftoff for 2 minutes and 30 seconds, the attitude of the rocket became unstable and began to rotate, and finally it disintegrated and exploded, and the launch failed.

　　Later, SpaceX announced the cause of the failure, saying that after the launch of the "Starship", several engines failed, lost altitude and began to rotate, and issued instructions to the spacecraft to terminate the flight. SpaceX said that the "Starship" has set up a self-destruction mechanism in the event of an accident to prevent the rocket from falling freely and threatening the safety of human beings on the ground.

　　It is said that the engine failed because the leaked propellant at the back end of the overweight booster caught fire and finally cut off the connection with the main flight computer. This led to the loss of signal of most booster engines, and eventually led to the interruption of the "Starship" control system.

　　Afterwards, SpaceX implemented leakage mitigation measures and improved the testing of engine and booster hardware. In addition, SpaceX upgraded the existing fire extinguishing system of overweight booster to reduce the risk of engine fire in the future.

　　Starship is a heavy-duty launch vehicle developed by SpaceX, which adopts reusable design. The rocket consists of two parts: the take-off stage is called "Super Heavy Booster", and 33 Raptor liquid oxygen methane engines are installed in parallel, of which 13 are built in to change the thrust direction, with a maximum thrust of about 7,600 tons; The second stage is actually a spaceship with six engines (including three vacuum Raptor engines and three sea-level Raptor engines). The maximum carrying capacity of Starship in low earth orbit is 250 tons, and it is 150 tons in recoverable state.

　　Get up from where you fell. In response to the failure of the first flight, Musk said in September that SpaceX has made more than 1,000 modifications to the Starship since its first flight in April. The most important change is the interstage thermal separation method, that is, the second-stage spacecraft of the Starship ignites the engine when it has not been separated from the first-stage overweight booster. Musk said, "Thermal separation has the advantage of loading into orbit, and conservatively speaking, the carrying capacity has increased by about 10%."

　　Musk said that when the engine of the "Starship" second-stage spacecraft was ignited, a few engines of the overweight booster were still working. This can prevent the vehicle from losing thrust in the traditional stage separation process when the first stage engine is turned off first.

　　In order to improve the carrying capacity, most rockets adopt multi-stage design. Separation between rockets is one of the key technologies of launch vehicles, and whether it can be successfully separated directly affects the success or failure of the mission. At present, there are two separation forms of interstage separation: cold separation and thermal separation. Thermal separation means that the rocket at the back stage is pushed away by the high-temperature gas jet from the rocket engine at the front stage, and the engine at the front stage is already ignited when the connector is unlocked; The cold separation uses the separation energy installed on the separation body to provide separation energy, and the engine of the first stage rocket will not ignite until the first and second stages of rockets are separated.

　　The two separation methods have their own advantages and disadvantages. The thermal separation method does not need to accelerate the engine twice, which reduces the dead weight problem and improves the carrying capacity to some extent. But there are also some problems in thermal separation, which need to be paid attention to when using this technology. For example, the "Starship" stage will be directly hit by the flame during thermal separation, and the time must be controlled well, otherwise it may affect the reuse of the arrow body. Secondly, thermal separation is fast, and if there are design problems or unexpected factors, it may lead to accidental damage of the rocket.

　　Judging from the live video of this launch, the thermal separation technology was successful, and all 33 engines in the first stage were ignited, but it exploded shortly after thermal separation. The second stage was about to run out of time machine when the propellant was about to run out, and then the telemetry signal was lost. Although the second launch did not meet expectations, it took longer than the first flight, which verified more technologies.

　　The United States may not be able to send a man to the moon on time.

　　The second launch of Starship failed to fully meet expectations. Although this is an acceptable setback under SpaceX’s "rapid iteration" and "flying instead of testing" rocket development mode, these setbacks are likely to drag down the US manned moon landing plan and its own company’s space program.

　　In August this year, NASA officials said that if the research and development progress of key systems can’t keep up, the "Al themis 3" manned moon landing program may not include the astronauts’ landing on the moon. Jim Fry, an official of NASA’s Exploration System Development Task Department, told the media that if key equipment such as the manned lunar landing system developed by SpaceX (that is, the moon landing version of "Starship") is not in place in time, "we may finally perform it once (with the plan). Different tasks."

　　NASA Director Bill Carney once said, I ask such a question every day: How is SpaceX progressing? All the managers told me that they were achieving all the milestones.

　　In 2019, the U.S. government announced the new moon landing plan of "Al themis", and has completed the mission of "Al themis 1" orbiting the moon. NASA plans to carry out the manned mission of "Al themis 2" around the moon in November next year.

　　In the American moon landing plan, SLS rocket+Orion spacecraft+moon landing version of "Starship" are the three most critical parts, which are indispensable. Although the development progress of the first two is protracted and costly, the research and development have been completed, and everything went well for the first test flight. According to the plan, only one manned test flight around the moon needs to be completed in 2024, and the conditions for landing on the moon are met.

　　In the new moon landing plan of Al themis, the moon landing version of "Starship" will carry astronauts away from the "portal" lunar space station to carry out the moon landing mission. After landing on the lunar surface to complete the mission, the "Starship" took off again to dock with the lunar portal, sent the astronauts to the "portal" space station, and returned to Earth after a rest in the "Orion" spacecraft. After the second launch, "Starship" will have to carry out many verification flights, including a series of major test challenges, such as recovery of launch pad, rapid reuse launch, on-orbit refueling, unmanned lunar landing demonstration, etc. It is said that it may take at least ten flight tests and success before it can meet the conditions for landing on the moon. Now, the "Starship" has become the X factor for the United States to return to the moon in 2026.

　　It is worth mentioning that one month after the first flight of Starship failed, on May 19th, NASA announced that it had signed an additional contract with Blue Origin Company to develop a second manned lunar lander, which will make its first manned flight as part of the mission of Al themis 5. Blue Origin’s lunar lander is smaller than the moon landing version of Starship, with a payload of only 20 tons. The lander uses a combination of liquid hydrogen and liquid oxygen propellant as fuel, and plans to carry out its fifth mission in 2029. Some analysts believe that because NASA saw the progress of the Starship delayed and there were some technical uncertainties, it decided to choose a "spare tire" for the moon landing version of the Starship, and the blue origin company’s plan was "spare tire".

　　William Gersten Mayer, vice president of SpaceX in charge of construction and flight reliability and a former senior employee of NASA, once said that if the delay continues, eventually, we will lose our leading position and we will see China land on the moon before us.

　　In July this year, the China Manned Space Engineering Office issued the "Announcement on Collecting the Scientific Load Plan for the Manned Lunar Exploration Project", pointing out that the mission of the manned lunar exploration project in China has been launched, and it is planned to carry out unmanned lunar landing in advance and realize the first landing of China people on the moon by 2030.

　　China’s initial plan for manned landing on the moon is to use two launch vehicles to send the lunar lander and manned spacecraft to the Earth-Moon transfer orbit respectively, and the spacecraft and lander will rendezvous and dock in the orbit around the moon, and the astronauts will enter the lunar lander from the spacecraft. After that, the lunar lander will descend and land in the predetermined area of the lunar surface, and the astronauts will land on the moon to carry out scientific investigation and sample collection. After completing the established mission, the astronauts will ascend to orbit around the moon on the lander and rendezvous and dock with the spacecraft, and return to Earth on the spacecraft with samples.

　　It is reported that China has fully deployed and carried out various research and construction work, and researchers are developing the Long March 10 carrier rocket, a new generation of manned spacecraft, a lunar lander, a lunar landing suit, a manned lunar rover and other equipment. The take-off weight of the Long March 10 is about 2,187 tons, the take-off thrust is about 2,678 tons, and the carrying capacity of the Earth-Moon transfer orbit is not less than 27 tons. It is expected that it will have the first flight conditions in 2027, and the new generation manned spacecraft test ship will successfully make its first flight in May 2020. The lunar lander under study weighs about 26 tons and consists of a lunar module and a propulsion module. It can deliver two astronauts to the lunar surface and is mainly responsible for lowering the astronauts from the orbit around the moon to land on the lunar surface and returning to the orbit around the moon. At the same time, the lunar lander also has the ability of autonomous control flight.

　　The United States was once the first country in the world to successfully land a man on the moon. It hopes to win the top spot again in the lunar exploration boom in the new century, and now the pressure is coming.

CCTV News:On the Qinghai-Tibet Plateau, there is an unusual expressway, which runs more than 680 kilometers from Gonghe County in Hainan Prefecture of Qinghai Province to Yushu Tibetan Autonomous Prefecture. This highway not only undertakes the task of continuously transporting mainland materials to Tibetan areas, but also is the most convenient route in go on road trip.

It is called Gongyu Expressway, and the hard work of several generations has condensed behind it. What kind of people broke through the forbidden area of human engineering and built this "heavenly road"? Wang Shuangjie, the main survey designer of this highway, gave the answer.

Wang Shuangjie (middle) leads the team to investigate the frozen soil on the plateau.

Harvest precious life wealth on the vast plateau.　

In 1979, 17-year-old Wang Shuangjie was admitted to Xi ‘an Highway College (now Chang ‘an University Highway College). Because he dreamed of becoming a teacher since he was a child, the first thing Wang Shuangjie did after entering school was to join several classmates to find a school to change majors. The old headmaster’s words dispelled his thoughts: "Classmates, our country’s transportation infrastructure is backward. In the past 30 years, it has been in the east of the river and in the west of the river. Foreign cars have entered the family, and the traffic is so developed that our country can’t be in that state forever. The day when our national car entered the family is the day when our national highway developed to a high level. You can study with peace of mind and you can use it. "

In July 1983, after graduation, Wang Shuangjie was assigned to work in the First Highway Survey and Design Institute of the Ministry of Communications. In the spring of the following year, he was appointed by the Ministry of Communications to go to Karakorum Mountain to conduct preliminary survey, design and construction technical guidance for a frontier highway.

"At that time, the altitude of this highway was about 4,700 meters, and there was permafrost on it, which made me really realize the environment of the plateau." Although Wang Shuangjie had prepared himself psychologically before this, the real situation in front of him still made him unexpected.

　

The station is short of water and electricity, and it is windy, rainy and snowy, and hails. During the day, I have to stop and rest every few steps when carrying equipment, and I have a headache and chest tightness at night, making it difficult to sleep … … The harsh environment and severe altitude sickness made Wang Shuangjie almost give up several times.

In the past 10 months on the plateau, Wang Shuangjie’s mother, who was far away from her hometown in Anhui, fell ill and passed away. It was more than a month after he received the telegram. The superior ordered that the road must be opened before the snow closed the mountain, and Wang Shuangjie was the only technical backbone appointed by the local ministries and could not leave easily. In the spring of the following year, when Wang Shuangjie rushed home, the grass was green on his mother’s grave.

Gongyu Expressway is the first expressway crossing the permafrost region in the Three Rivers source area, and it is also the scientific research demonstration and supporting project of the expressway. Stepping on the Gongyu Expressway, Wang Shuangjie’s inner pride is self-evident.

Stick to the forbidden area of life and continue the fire of scientific research on plateau frozen soil

The Qinghai-Tibet Highway starts from Xining City, Qinghai Province in the east and reaches Lhasa City, Tibet in the west. It is the asphalt highway with the highest altitude and the longest route in the world. It is also the best and safest highway leading to Tibet at present, with a total length of nearly 2,000 kilometers. This highway embodies the efforts of generations including Wang Shuangjie, and is also the foundation for building the Gongyu Expressway.

In 1950s, General Mu Shengzhong, an older revolutionary, led the troops to build the Qinghai-Tibet Highway through hardships. Since then, this highway has undertaken more than 85% of the passenger transport tasks in Tibet, and the frozen soil has melted and the road surface collapsed due to overload.

In the 1970s, the state decided to lay asphalt pavement for the entire Qinghai-Tibet Highway. In 1985, after the completion of the project, new problems followed. Due to the serious heat absorption of asphalt pavement, permafrost melts rapidly and collapses badly, so the Ministry of Communications has organized four studies on the treatment of Qinghai-Tibet highway diseases before and after.

In 2001, Wang Shuangjie became the project leader of the complete set of technology research for highway construction in permafrost regions. This is a project in which the Ministry of Communications has invested the most research funds and researchers in history. During the critical seven years from 2001 to 2008, Wang Shuangjie made dozens of trips between permafrost observation stations on the Qinghai-Tibet Highway in Xi ‘an, and made one major breakthrough after another in the field of engineering construction technology in permafrost areas. In 2008, with years of observation data and exploration and innovation, the construction and maintenance technology of Qinghai-Tibet Highway in permafrost hosted by Wang Shuangjie won the first prize of National Science and Technology Progress Award.

"Our first team leader died very early because of stomach problems, and altitude hypoxia can also cause cardiovascular damage; Our second team leader left because of respiratory and cardiopulmonary problems. " Colleagues around us have fallen down one by one, the older generation of frozen soil research experts are about to retire, and the new generation of researchers have not kept up. The research results on frozen soil for many years have been broken, and the whole industry will face the dilemma of green and yellow. As a leader in the new generation of frozen soil research, Wang Shuangjie feels that he should not only stick to it, but also "stabilize" a group of talents.

In 2000, the country began the strategy of developing the western region, which gave great support and care to the western transportation. This group of frozen soil researchers led by Wang Shuangjie finally ushered in the opportunity to display their talents. What they have to face is still a difficult environment. However, compared with decades ago, various hardware facilities and personnel have made great improvement and progress.

When all the fame and aura have long been submerged in the daily busyness, Wang Shuangjie dare not forget the encouragement of the old headmaster. In a project to overcome difficulties, how precious faith is, how important encouragement is. He often tells the young people in the team: "You should persist in a job, and hope will always be left to those who have hope."

　　　　　　 CCTV News:Two oil tankers No.13 were attacked and exploded in the Gulf of Oman. At present, the truth about this incident is confusing. On 14th, UN Secretary-General Guterres condemned the incident again in new york, and said that it was necessary to find out the truth of the incident and clarify the responsibilities.

　　　　　　 On the same day, Guterres said that it is very important to avoid serious conflicts and escalation in the Gulf region. He called for an independent entity to conduct a thorough investigation on this matter, and the United Nations will try its best to support it.

　　　　　　 In addition, in response to the video released by the US Central Command that the Iranian Islamic Revolutionary Guards allegedly took down the unexploded device from the attacked oil tanker, German Foreign Minister Mas said on the 14th that the video released by the United States was not enough to prove that Iran had carried out the attack.

　　　　　　 Iranian Foreign Minister Zarif said earlier that the attack on the oil tanker was quite suspicious. The accusation of the United States is one of the destructive action plans of the hostile Iranian forces in the United States and its allies, a clumsy means for the United States to exert extreme pressure on Iran, and a usual diplomatic trick for the United States to destroy.

　　　　　　 In response to the attack on two oil tankers in the Gulf of Oman, the Russian side said on the 14th that Russia strongly condemned the oil tanker attack and called on all parties to exercise restraint. The Russian Foreign Ministry said that no matter who was behind the attack, Russia strongly condemned the attack.

　　　　　　 At the same time, the Russian side urged all parties concerned in the Gulf region to exercise restraint over this incident, and should not make hasty conclusions about this incident before the results of the investigation are announced. On the same day, Russian Deputy Foreign Minister Ryabkov also warned that relevant parties should not attempt to blame Iran for this incident and use it to aggravate the regional situation.

　　　　　　 On the 13th, two oil tankers were attacked in the Gulf of Oman. According to Iranian media reports, after the incident, the Iranian side participated in the rescue and safely transferred the crew of the two tankers. Sputnik reported that 11 of the crew were Russian.

In 2023, the Hainan Provincial Junior High School Academic Level Examination (hereinafter referred to as the senior high school entrance examination) will be held on June 25-27. What should I pay attention to before the exam? How to arrange the examination time of each subject? When will the results be announced? ….. In view of these problems, the Provincial Examinations Bureau has compiled relevant answers and suggestions for the reference of the majority of candidates and parents.

1. What is the nature of the senior high school entrance examination in 2023?

In 2023, our province will continue to implement the "two-in-one" method of academic level examination and high school entrance examination. Examination results are not only the main basis for measuring students’ academic level and evaluating the quality of education and teaching in compulsory education, but also one of the important basis for selecting and recruiting new students in high school. That is, the senior high school entrance examination is both a "graduation examination" and a "entrance examination".

2. What are the subjects for the senior high school entrance examination in our province in 2023? How is the score set?

The examination subjects for the ninth grade students are: Chinese, mathematics, English (including listening), morality and rule of law, history, physics and chemistry, and the examination subjects for the eighth grade students are: biology and geography.

Chinese, mathematics, and English have a full score of 120, morality and rule of law, history, physics, chemistry, biology, and geography have a full score of 100, and sports and health subjects have a full score of 50. The original score of all examination subjects is 910, which is made up of the original scores of 8 examination subjects, including Chinese, Mathematics, English, Morality and Rule of Law, History, Physics, Chemistry, Physical Education and Health, and 50% of the original scores of 2 examination subjects, namely Biology and Geography. This year’s physical education and health subjects are included in the original score of the candidates’ senior high school entrance examination with full marks.

3. What is the examination schedule of each subject in the senior high school entrance examination in our province in 2023?

The specific arrangements are as follows:

Fourth, what should I pay attention to before the exam?

(1) It is recommended that candidates avoid or reduce access to crowded public places before the exam. When it is really necessary to go to public places, they should pay attention to wearing masks scientifically.

(2) Candidates should do a good job in self-health monitoring. If you have symptoms such as fever and cough before the exam, you should go to the hospital in time.

(3) carefully check whether the admission ticket is ready before the exam. If it is lost, report it to the class teacher or the teacher leading the exam as soon as possible.

(four) carefully read the "examination room rules" (see Annex 1).

5. What should I pay attention to on the day of the exam?

(a) to plan the traffic route from the departure point to the test center in advance, taking into account the traffic congestion, admission security and other factors, reserve enough time to ensure that you arrive at the test center on time.

(2) During the examination, it is the high temperature and thunderstorm season in our province. Please pay attention to the weather forecast, prevent high temperature and lightning rain, and pay attention to traffic safety on the way to the examination. During the examination, the examination room may turn on the air conditioner or fan to cool down. It is recommended that candidates bring their own coats according to their actual situation.

(3) Candidates can look for the examination room as shown in the plan of the examination room after entering the examination center. 40 minutes before the Chinese exam (30 minutes before other subjects), candidates begin to enter the examination room.

6. What test equipment should candidates bring into the examination room?

When candidates enter the venue, except 2B pencils, black ink pens, rulers, compasses, triangles and erasers, other items should be placed in the "temporary place for non-examination items" outside the entrance of the examination room, and they are not allowed to carry them with them. It is forbidden to bring mobile phones and other wireless communication equipment, electronic storage equipment, watches, calculators, dictionaries, dictionaries, correction fluids, correction tapes and other non-examination articles into the examination room. No examination supplies are allowed to be delivered in the examination room.

7. What should I pay attention to during the examination?

(a) the examination time shall be subject to the examination signal issued by the examination center. Candidates can’t answer questions until the test start signal is issued. After 15 minutes of examination (according to the examination time of the first subject in the combined examination), late candidates are not allowed to enter the examination center. Late candidates are not allowed to enter the examination room after 5 minutes before the English listening test.

(2) Candidates must fill in or answer in the answer area corresponding to the answer sheet in strict accordance with the requirements of the test questions. During the examination, we should abide by the examination discipline, keep a calm mind, carefully examine the questions and answer the questions carefully. If you feel unwell during the exam, please raise your hand to the invigilator and follow the invigilator’s arrangement.

(3) Candidates must stop answering questions immediately after the signal of the end of the exam is issued, otherwise it will be dealt with in violation of regulations. Candidates put the answer sheets and test papers in order of page numbers and put them on the table. Candidates can withdraw from the examination room in turn after the invigilator receives the answer sheet and test paper and accepts them correctly. Candidates are not allowed to take away papers, answer sheets and draft papers, and are not allowed to stay in the examination room.

(4) All subjects can only be handed in after the examination, and it is not allowed to hand in papers in advance.

Eight, how to fill in and answer correctly on the answer sheet?

(1) All the senior high school entrance examinations in our province adopt online marking methods. Only test questions are printed on the examination papers of all subjects, and candidates’ answers are filled in and answered at the designated position on the answer sheet as required. Answering questions on the examination paper or draft paper is invalid.

(2) When answering questions, pay attention to the order of the questions. Answers written outside the wireframe of the answering area or not written in the answering area of the corresponding topic are invalid.

(3) When answering objective questions, candidates shall scribble the answer sheet with the specified 2B pencil, and shall not use a pen or ballpoint pen; The written answers to subjective questions can only be written in black ink, and pens of other colors and 2B pencils are not allowed. For drawing with 2B pencil, the underlined lines must be clear, so as not to affect the scanning effect.

(four) when the graffiti is incorrect and needs to be modified, an eraser can be used, and correction fluid and correction tape are prohibited.

(5) No marks irrelevant to the answers are allowed on the answer sheet. If you need to write the school name or name in the answer, you must not write the real school name or name, otherwise it will be punished as cheating.

(6) Do not fold or damage the answer sheet.

When will the results of the senior high school entrance examination be announced?

The results of the senior high school entrance examination will be announced around July 16th. At that time, the Provincial Examinations Bureau will issue the Announcement on the Release and Inquiry Guidelines of the Senior High School Entrance Examination Results through official website (http://ea.hainan.gov.cn) and Guanwei, and candidates will inquire about the results of the senior high school entrance examination according to the contents of the announcement.

10. What should I do if I have doubts about the results of the senior high school entrance examination?

Candidates who have doubts about their grades can apply for grade review within the specified time (subject to the announcement of the Provincial Examinations Bureau). The contents of the results review include the scanning of the answer sheet, the statistical synthesis of the small items and total scores of each subject, and the classification. Candidates themselves and their parents are not allowed to consult the test papers and answer sheets.

XI. How do candidates get guidance when filling in their volunteers?

Recently, the Provincial Examinations Bureau will issue the "Announcement on Candidates’ Voluntary Guidance" through official website to inform the majority of candidates and parents about the rules and precautions for volunteering. In the first ten days of July, a detailed interpretation of the 2023 China Recruitment Volunteer Reporting Policy will be made through live webcasting. Recruitment offices in cities and counties and junior high schools will also organize voluntary reporting and guidance activities.

Twelve, through what channels do candidates know the examination enrollment information?

Candidates can log on to http://edu.hainan.gov.cn/, the website of the Provincial Education Department, the entrance examination column of http://ea.hainan.gov.cn/, the WeChat WeChat official account of the Provincial Education Department and the Provincial Examination Bureau, and the publication "Hainan Secondary School Admissions Guide in 2023" to learn and obtain relevant information. You can also call the provincial examination bureau and the recruitment offices in cities and counties during working hours (see Annex 2) for consultation, and the junior high school where the candidates are registered can also provide consulting help for candidates.

Attachment: 1.Examination room rules

2.Telephone number of the provincial examination bureau and the recruitment offices in cities and counties.

　　BEIJING, Beijing, June 17 (Reporter Song Yusheng) "People who can’t dance are narcissistic and dancing, which is embarrassing." This is probably the understanding of the word "dancing" by many people. However, where did the word "full dance" come from? How did this word, which has soared in popularity recently, catch fire?

　　In fact, according to public information, full-time dancing is a professional term in street dance, also known as fighting dance, which refers to the comparison of mutual dances.

　　In the early years, the word "full dance" was found in Taiwan Province. A few years ago, there was even an online game called "Dance Online". This game is known as the sequel of "Dancing Group", and "Dancing online" is the name of its costume.

　　However, in the mainland, "dance" began to be gradually known from 2016. The reporter checked the Baidu search index. At least before July 2016, the Baidu search index was 0, which means that no one had searched for the word "dancing" before that.

　　In May, 2016, a children’s drama named "Dancing Dofala" provided countless expression packs for the word "dancing", and at the same time exposed many netizens to the word "dancing".

　　In this magic-themed TV series, which was rated by netizens as "watching for five minutes and embarrassing for two hours", the young actors have powerful magic power, but they "dance if they don’t agree with each other". Every spell depends on dancing, and they must dance before each move. In an online video, Wang Nima, editor-in-chief of runaway comics, ridiculed it as "inventing a brand-new dance genre — — Dance. "

　　As a result, the "awkward dance" understood by netizens began to deviate from its original intention. "People who don’t know how to dance twist their bodies and make the scene awkward for a time" has become the understanding of this word by many people.

　　Since then, the live webcast of the square dance has further promoted the spread of "dancing".

　　In February and March of 2017, several uncles and aunts in Zhengzhou People’s Park created their own "anti-sky swing cramp dance" and became popular on the Internet. With its magical dance, exaggerated movements and fierce expressions, this square dance team, which has attracted attention through live dancing, has been named "Dancing Heavenly Group" by netizens.

　　For this "celestial group" dance, some media described it this way — — "Some people hold their thumbs and forefingers upright, like holding two pistols, some people crouch, their hands swing down with the beat, like applying chemical fertilizer to wheat seedlings, some people keep twitching with the beat to get an electric shock, and some people imitate the movements of monkeys in the middle of dancing … …”

　　The uncle and aunt who danced in the square dance added a more vivid footnote to the "dance". And netizens seem to accept this understanding. Immediately, many new words with "embarrassment" appeared. Some netizens call embarrassing chatting "embarrassing chatting" and embarrassing singing "embarrassing singing". Recently, the China version of "Midnight Food Store" suffered bad reviews on the Internet. Some netizens ridiculed Huang Lei’s performance in the play as "cooking with embarrassment".

　　For similar statements on the internet, some netizens think that humor is just a new expression, and there is nothing wrong with it; However, some people find it difficult to understand.

　　Chen Peng, director of the Communication Department of Nankai University, said in an interview with Zhongxin.com (WeChat WeChat official account: cns2012) that with the development of the Internet, more and more network languages have been formed. "Netizens can form a very large social circle on the Internet platform and form a consensus language."

　　He also said that such a language has its own life cycle. "There are many such languages that have become popular and have not settled down." He believes that such language "can be left to fend for itself as long as it does not have an impact on our social life and moral bottom line". "But some measures should be taken to correct those languages that affect social life and moral bottom line." (End)

The film (provisional translation) jointly produced by Columbia Pictures and Marvel Pictures in the United States released a pilot trailer last week, officially announcing its release in North America on July 5, 2019. After the release of the pilot trailer, it caused a huge shock among fans around the world, and the number of broadcasts exceeded 130 million in just 24 hours, winning the first place in Sony Columbia film history and the second place in single superhero movies. Some fans left a message in Weibo, "I’m going to cry! The little spider finally came back to life! " One sentence expresses the crazy love of all spider fans for him.

The pilot forecast broke 130 million! Sony Columbia film history is the best!

After the movie Spider-Man: Heroic Expedition was released, it set a new record again. The global broadcast volume broke 130 million person-times in 24 hours, breaking the record of 116 million person-times, and the number of video sharing was double that of the previous one. Not only won the first place in Sony Columbia film history, but also the second place in the world in the number of pilot trailers for single superhero movies. It shows that fans around the world are crazy about it, and the hottest superhero movie in 2019 has been locked in advance by Spider-Man.

The enthusiasm of domestic fans is also high. Within 48 hours after the trailer was released, the broadcast volume of the whole network soared to 25 million! He has been on the hot search list of Weibo for many times, and has continued to create topics on many social platforms. Many netizens have expressed their expectations for the film, thinking that the fighting scene of this film is far ahead of the previous work, and the whole story is full of surprises. Some netizens left a message in Weibo, "I’m going to cry! The little spider finally came back to life! " "Looking forward to domestic release!"

The trailer is full of explosions and set off a hot discussion among netizens!

The pilot notice released this time has caused a lot of discussion on the Internet. Spider travels to Europe and encounters an unexpected crisis. Many famous landmark buildings appear in the film. Some netizens will analyze the destruction of many landmarks by villains, which will become one of the highlights of this film. The film will have a spectacular battle scene like doomsday catastrophe. Along with the fierce fighting, Spider-Man’s new battle clothes "stealth suit" and "black and red battle clothes" appeared. The two new battle clothes not only made Spider-Man more mature, but also had a lot of articles on the details of the clothes.

The newly joined two big coffees directly ignite the excitement of fans. Nick Frey, the director of S.H.I.E.L.E.L.D., appeared in surprise. He will bring new tasks to Spider and give him a new identity. The mysterious guest played by Jake Gyllenhaal is a big surprise, and the identity of both good and evil can only be found out after the film is released. The addition of new forces has made the whole film full of freshness, and many netizens have launched massive analysis on the Internet.

In Reunion 3, the little spider vanished in Thanos’s fingers, full of disappointment for the world, his friends and his mentor Iron Man, which made many fans cry. This time, the return of the little spider has embarked on a new journey, fighting against evil forces alone, continuing to defend the earth, making fans hooked up and looking forward to the release of the film.

　 　 　 　 Every year, the editorial department of Chewing on Words publishes the top ten buzzwords of the year at the end of the year. This year, the top ten are: top-level design, new normal, fighting tigers and flies, cliff-breaking, you know, breaking up, losing contact, artifacts, being tall and sprouting. Obviously, these top ten buzzwords have a strong political flavor.

　　　　　　　　First, the top design Originally, it was the concept of systems engineering, which means to plan all levels, elements and aspects of the project from the top level in order to achieve the goal efficiently and quickly. Later, it was widely used in politics, economy, military and other fields. As a political term, "top-level design" refers to the government’s "strategic management". Its core is integrity, comprehensiveness, long-term and the setting of major and overall goals. It is an important way of thinking for the government to coordinate internal and external policies and formulate development strategies. Top-level design is inseparable from designers. Deng Xiaoping is recognized as the chief architect of China’s reform, opening up and modernization; Nowadays, people call the supreme leader the top designer of the Chinese dream to realize the great rejuvenation of the Chinese nation.

　　　　　　　　Second, the new normal As the name implies, it is "New Normal", which is translated from "new normal" in English. It originally described the slow and painful process of western economic recovery after the 2008 world financial crisis. Some people summarized it as "one low and two high", that is, "low growth, high unemployment and high debt". China’s economy is in the period of shifting growth rate, painful structural adjustment and digestive period of previous stimulus policies. Some people sum it up as "medium and high speed, excellent structure, new impetus and multiple challenges", which is the "new normal" of China’s economy. Once popular, the "new normal" is no longer confined to the economic field, and it is used in all walks of life. For example, "legislation first becomes the new normal of governing the country", "peace and happiness become the new normal of Tibet", and "migratory bird pension has become the new normal of the life of the elderly in Northeast China".

　　　　　　　　Third, fight tigers and flies In written language, it is called "beating tigers and catching flies", while in spoken language, it is called "tigers and flies fight together". "Tiger" and "fly" are two metaphors. "Tiger" refers to a corrupt official at the top and "fly" refers to a corrupt official at the grassroots level. "Beating tigers" and "swatting flies" reflect the principled position and policy measures of the CPC Central Committee in punishing corruption, which is both vivid and profound, and has won the hearts of the people from time to time.

　　　　　　　　Fourth, the cliff type The high and steep cliff fracture will inevitably lead to violent and rapid landslides, and the consequences are unimaginable. Therefore, people use "cliff type" to describe the downward state with large amplitude and fierce momentum, and its application range is very wide. For example, there are "cliff-like demotion" in the anti-corruption field, "cliff-like plunge" in the stock market, "cliff-like price reduction" in the property market, and some people call the sharp drop in temperature "cliff-like cooling", and so on.

　　　　　　　　Five, you know. This is a network term. On March 2, 2014, a spokesman for Chinese People’s Political Consultative Conference said in response to a question about Zhou Yongkang: "Whoever violates the party discipline and state laws, no matter how high his position, will be severely punished. I can only answer like this, you know. " The spokesman’s wise and humorous answer caused a burst of laughter. So "you know" went out of the network and became popular in the whole society. "You know" is mainly used in two occasions. First, as many people know, the speaker does not need to say more or explain. Second, because it involves sensitive topics, the speaker is unwilling, unable or inconvenient to say. At present, "you know" has become a somewhat mysterious and very useful social response.

　　　　　　　　Sixth, break away "Chinese characters" from Japan. Eiko Yamashita, a Japanese domestic consultant, is the author of "Breaking Away", and advocates "doing subtraction" to tidy up the house where you live and let yourself live in a spacious, comfortable and free space, so as to seek relief of stress and release of mind. With the best-selling of books, "breaking up" has become a fashionable new word, which means "cutting off unnecessary things, abandoning redundant waste, and getting rid of the obsession with things". Nowadays, "breaking up" has become a concept of modern life, extending to all aspects of social life. For example, a doctor said that "the treatment of hypertension should be separated", and a teacher said that "a good Chinese class should also be separated", and so on.

　　　　　　　　Seven, lost contact "Lost contact" means "lost contact". On March 8, a Boeing 777-200 aircraft of Malaysia Airlines with 239 people lost contact with the control center, and its whereabouts are still unknown. There are repeated expressions of "losing contact" and "losing contact" in news reports. For the sake of simplicity, a new abbreviation "lost contact" came into being. Because of its brevity, the word "lost contact" was seen in the media almost every day for a period of time, and now it is a household name.

　　　　　　　　Eight, artifact In ancient Chinese myths and legends, there are "Top Ten Artifacts". For example, Pangu’s artifact that opened heaven and earth is called "Heaven Axe" and The goddess patching the sky’s artifact is called "Heaven-mending Stone". Ancient humans could not understand and explain many phenomena in the universe, so they had to "owe" to the power of "God". Nowadays, a new artifact or high-tech product is called "artifact" to emphasize its unique "magical" effect. It is reported that in order to facilitate the police to obtain evidence and enforce the law, the Shanghai traffic police department has launched a variety of high-tech "law enforcement artifacts" such as "visual law enforcement recorder" and "new car lock". At present, "artifact" has become a popular Chaozhou language.

　　　　　　　　Nine, tall The abbreviation of "high-end atmosphere is superior". The TV series Legend of Wulin and the movie Party A and Party B both used the seven-character phrase "high-end atmosphere is superior", which was later condensed into the three-character "Gao Da Shang", which became popular in 2013, but it has not yet reached the point where the public is familiar with it. In 2014, "Gao Da Shang" continued to heat up, and the usage rate and awareness rate were greatly improved, which quickly became a popular buzzword among the whole people. The scope of application is also very wide. People (such as a writer), things (such as a friendly match) and things (such as a mobile phone) can all be described as "tall".

　　　　　　　　Ten, Meng Meng Da That is, "MengMeng’s", originally a network word, has now evolved into a popular buzzword. "Meng" can be loved; Overlapping as "MengMeng" means very cute. "da" is pronounced da, which is originally a transliteration word, homophonic "De", which is playful, humorous and kind. The word "Meng Meng Da" is used together, which means it is so cute that people, things and things can use it. During the Supreme Leader’s visit to Oceania, Xinhua News Agency released a photo of Peng Liyuan embracing a lovely Australian rare animal koala bear, which was praised by netizens as "cute".

　 　 　 　 The Paper reporter found that the recently popular words such as "willfulness", "being pretty hard" and "being drunk" were not included. In this regard, Huang Anjing, executive editor of Chewing on Words, said that there are specific principles for the inclusion of buzzwords in Chewing on Words, and it is not entirely based on the popularity of words. "We will give special consideration to three values: the value of the times, the value of language and the value of society."

　 　 　 　 Huang Anjing said that the selection of buzzwords should first promote "positive energy", consider the characteristics of the times and reflect the spirit of the times; Secondly, words that are ungrammatical and have unclear meanings will not be included, such as: "People are hard to tear apart", "Men are silent about women’s tears", "Do you hate them", "Doing (mourning), floating (sick)," no zuo no die "and other words are obviously ungrammatical. However, words like "willfulness" and "pretty spelling" are not innovative in structure, semantics and usage, and still express literal meaning and will not be included. At the same time, the "Top Ten Catchwords" include all-round popular words, and do not accept words such as "drunk" and "APEC blue" that are only popular on the Internet or popular for a while; In addition, we should also consider social values. If you don’t accept vulgar and indecent terms that don’t conform to social ethics, such as "about", "forcing" and "forcing me to fly", you can only regret going out.

　 　 　 　 The buzzwords selection at the end of each year is a "special dish at the end of the year" for the public. This year, the State Administration of Radio, Film and Television requested that the use of online buzzwords be prohibited in radio and television programs and advertisements. The CCTV Spring Festival Evening crew collected the most offensive online buzzwords from netizens through official micro-collection, which pushed this unique cultural product to the forefront. Will online buzzwords have an impact on traditional languages? Will it cause language confusion?

　 　 　 　 In this regard, Hao Mingjian, a linguist and founder of Chewing on Words, also expressed concern. He pointed out that there are many vigorous language explorations and innovations in the society, but there are still many worrying places. "Some online expressions reflect the wisdom of the masses, but others are illogical and offensive."

　 　 　 　 In addition, people are indifferent to the correct use of language, and mistakes such as misuse of traditional Chinese characters and mixing of similar words are taken for granted by many people, such as misuse of "authorization" and "authorization" and writing "Kyushu Qingyan" as "Jiuzhou Qingyan". Secondly, there is a lack of social criticism, and there are few comments on literary and artistic works such as movies and books from the perspective of language; In addition, the applied research in academic circles is also lagging behind. How to distinguish between "doing" and "doing"? How to use "without thinking" and "without thinking" Is it "the Tao is one foot high and the magic is one foot high" or "the magic is one foot high and the Tao is one foot high"? All these need to be restrained and controlled by all sectors of society, so he called on the social control departments to perform their duties and regulate them.

Wen | Jing Yu

Editor | Yang Xuran

Produced by | tide-biz

On February 5th, Aauto Quicker (HK:01024) with the aura of "the first short video" went public. On the first day, its share price rose by nearly 200%, and its market value exceeded one trillion. At that time, the market value of Aauto Quicker was almost the same as that of the whole A-share media industry. Industry observers exclaimed: Aauto Quicker is not crazy, the market is crazy.

Aauto Quicker Stock Price Performance (February 5, 2021-present)

The crazy market gradually calmed down. With the collective withdrawal of technology stocks in the Hong Kong market, Aauto Quicker’s share price quickly halved. By the close of June 3rd, the market value of Aauto Quicker had reached HK$ 850 billion.

The same lopsided decline also occurred in companies such as New Oriental Online, Mingyuanyun and Weimeng. However, due to the large size of Aauto Quicker, the impact on the index is more obvious. Some investors even complained that the Aauto Quicker family had implicated the entire Hang Seng Science and Technology Index.

The high valuation of the capital market is equally important for technology Internet companies listed on A-shares, US stocks and Hong Kong stocks, which is almost the smartest fund in the world to cast a vote of confidence in the company’s development. But high valuation will naturally bring higher expectations-enterprises need to prove that they deserve it with performance.

Although the performance of Aauto Quicker’s latest quarterly report is acceptable, investors still choose to vote with their feet. On the second day after the financial report was released, Aauto Quicker’s share price fell by 11.46%, and its market value evaporated by 100 billion in one day.

For a content-based platform company, user base and commercialization efficiency are two important growth engines. No matter which one is accelerated, it can drive the performance and valuation of the platform to a new level.

However, it is not difficult to find out from the analysis of Aauto Quicker’s financial report that the chronic problem of user growth in Aauto Quicker has not been solved. Juchao has hinted at this in the articles "Aauto Quicker Left Behind" and "Hot Subscription and User Loss: AB Side of Aauto Quicker Listing". However, the improvement of commercialization efficiency of advertising, e-commerce, etc. is still weak corresponding to the current marketing rate (PS) of nearly 12 times.

Before the listing of Aauto Quicker, even the most optimistic analysts only dared to predict that "Aauto Quicker will be able to challenge the market value of 1 trillion within one year of listing", but the greed of generate, the market sentiment, far exceeded the wildest imagination of analysts. The market value on the first day of listing has become a heavy burden on Aauto Quicker, but to return to the peak and cross it, Aauto Quicker’s achievements are far from enough.

A preliminary study on "the first short video"

From the IPO price of HK$ 115 (with a total market value of about HK$ 4,400), it is not difficult to see that Aauto Quicker management and underwriting investment banks are conservative in their valuation. The tripling of the IPO price on the day of listing also means that the IPO price in Aauto Quicker is set low, which fails to maximize the financing benefits of listing.

Aauto Quicker management’s judgment is consistent with the attitude of many institutional investors. The capital market is used to the logic of "the boss gives a premium". As the second child in the industry, Aauto Quicker seems to have no reason to enjoy too high valuation.

But the sky-high price still appeared. On the one hand, liquidity was loose at that time, market sentiment was restless, and high-quality assets were pursued; On the other hand, ByteDance has not been listed yet, and Aauto Quicker, as the "first short video stock", is really scarce. If you are optimistic about or configure a short video track, Aauto Quicker is the only choice.

At present, among all kinds of content platforms, short video is almost the best business model: users upload content at low cost and do not need to buy expensive copyrights in large quantities like long videos; Users are very sticky, and it is difficult to leave after using them; The ability to seize the user’s time is very strong, and it can’t stop with a brush; There are various ways to realize cash-live broadcast, e-commerce, advertising, etc.

Especially in the environment where the dividend of consumer Internet is exhausted and the growth of users is at its peak, all platforms are competing for the same number of users and duration. As a more "advanced" form of commercialization, short videos crush long videos in terms of user stickiness and duration, and even erode users’ use duration in instant messaging applications, that is, WeChat.

At the 9th China Internet Audio-visual Conference, Sun Zhonghuai, vice president of Tencent, commented that some short videos with low intelligence and vulgarity "consumed a lot of users’ time", "subtly impacted users’ ideas" and "lowered users’ minds" caused a heated discussion. Behind this, in fact, whether it is Tencent Video, iQiyi or WeChat, there is a challenge that the user duration is taken away by the short video platform.

Today, Aauto Quicker can still enjoy a valuation close to 12 times the market-to-sales ratio, which largely represents the optimistic view of the capital market on the short video business model. Aauto Quicker, the "first short video", also set an example for the valuation level of the whole industry.

Vigorously failed to work miracles.

However, despite its excellent track and business model, Aauto Quicker still faces a serious growth problem-the scale of users seems to have hit the ceiling. 500 million MAU may be a difficult barrier for Aauto Quicker to break through.

User scale is the basic disk of a content platform. If there is no huge user base, whether it is advertising, live broadcast, e-commerce or financial services, it will only be "without rice".

If the content platform is likened to a water cup that is receiving water, the tap keeps getting water (adding users), and at the same time, there is a leak under the water cup that keeps flowing out (losing users). If the inflow is greater than the outflow, the water level, that is, the user scale, will rise. On the contrary, the user scale will decline.

In order to stabilize the basic disk or increase the number of users, many platforms will burn a lot of money to innovate and promote life. The so-called "miracle" is typical of the original interesting headlines and crazy investment for short-term user growth. This method can indeed achieve obvious results in the short term, but after stopping burning money, users may accelerate the loss.

Aauto Quicker once had a fall on this issue. Last year, Aauto Quicker spent a lot of money to reach an exclusive cooperation with the 2020 CCTV Spring Festival Gala. It is reported that the sponsorship fee for this Spring Festival Gala in Aauto Quicker is the highest since the statistics were published. However, this cooperation promoted Aauto Quicker’s daily life to a higher level in a short time, but it soon fell back.

According to public data, around the Spring Festival in 2020, the daily living of Tik Tok and Aauto Quicker will be around 400 million and 300 million respectively. According to the data of August, 2020, Tik Tok has more than 600 million daily active users, almost twice as many as Aauto Quicker Daily Live.

With huge investment in promotion, Aauto Quicker also broke the profit situation for three consecutive years in 2020, resulting in a loss of 6.348 billion. At the same time, the cash flow generated by its operating activities has also turned from positive to negative.

In the first quarter of this year, Aauto Quicker continued the practice of burning money for users. The data shows that Aauto Quicker’s single-season marketing expenses are 11.66 billion yuan, accounting for 68.5% of its total revenue. This figure has almost caught up with Pinduoduo, which is famous for burning money, and its sales and marketing expenditure in the same period was about 13 billion yuan.

The huge operating expenses have led to the continuous expansion of Aauto Quicker’s losses. Its adjusted net loss in the first quarter was about 4.9 billion yuan, compared with 4.3 billion yuan in the same period last year.

However, Aauto Quicker’s great efforts did not produce a miracle. In the first quarter of this year, both DAU and MAU in Aauto Quicker achieved growth, with DAU reaching 295.3 million, up 16.5% year-on-year, and MAU reaching 519.8 million, up 5% year-on-year. Compared with the huge expenditure, it is not worth mentioning-nearly 11.7 billion has gained 44.1 million new monthly users, and the average cost of each new monthly user is 264 yuan.

With regard to the problem of user growth in Aauto Quicker, Juchao suggested in the previous two articles that the reasons behind this include the homogenization of Aauto Quicker, Tik Tok and the substitution of Aauto Quicker, the network effect of short video platforms with social attributes, the difficulty of attracting users in high-tier cities by the ecology (and reputation) dominated by users, the saturation of users in the short video market, and the competitive impact from WeChat video numbers.

What is certain is that Aauto Quicker will face the pressure of losing users without burning money to promote new activities. However, if we continue to burn money, Aauto Quicker will face the problem of increasing losses, and investors’ worries will also increase.

Invisible ceiling

The practice of changing users by burning money is not unsustainable. Just like in Pinduoduo at the beginning, if users can continue to stay, and contribute enough income to the platform or drive other users to join the platform to form a positive cycle, it is a benign growth model.

There is a very key measure on this issue, that is, ROI (Return on Investment). This index requires spending money to obtain the customer acquisition cost generated by the user, which can not be lower than the life cycle value generated by this user in the long run, that is, LTV≥CAC.

In view of the long-term dynamic of this indicator, we compare the income contribution and cost of single-month users in that year, and we can find that the growth of users and income in Aauto Quicker can’t keep up with the soaring speed of cost.

The main reason behind this is that the commercialization efficiency of Aauto Quicker has not been fully developed, and there is still potential for growth. For example, e-commerce business and advertising business are growing rapidly, while local life business has just started.

Therefore, the current capital market chooses to accept its short-term losses and the disproportion between input and output, and bet on the future commercialization efficiency of Aauto Quicker.

But there are conditions for this tolerance. In the case of disproportionate input and output, once the commercialization efficiency cannot be improved rapidly, the confidence of investors will disappear. After the results of the first quarterly report were announced, Aauto Quicker’s share price plummeted.

Judging from the data disclosed in the first quarterly report, the situation of commercial efficiency development in Aauto Quicker is mixed, which does not exceed market expectations: the outstanding performance is that advertising revenue is 8.56 billion yuan, up 161% year-on-year; The total amount of e-commerce transactions reached 118.6 billion yuan, a year-on-year increase of 219.8%.

However, there are hidden concerns in the live broadcast business: in the case of increasing daily activities and monthly activities, the revenue dropped by 19.5% year-on-year to only 7.3 billion yuan. The payment rate of live broadcast has also dropped from 14% in the peak period to 10% in this quarter.

Although the e-commerce business has a high growth rate of GMV, its monetization rate is much lower than the current mainstream e-commerce platform because the platform has given certain subsidies and rebates to sellers. If 1.2 billion yuan from other service businesses including e-commerce is counted as a platform draw, then the monetization rate of e-commerce in Aauto Quicker in the first quarter is only 1%. According to this ratio, even if the GMV of e-commerce exceeds 1 trillion this year, the corresponding income is only 10 billion yuan.

It can be predicted that in the future, when the live broadcast business has reached the ceiling, Aauto Quicker’s revenue will mainly come from advertising revenue, the growth of e-commerce GMV and the increase of e-commerce proportion.

As far as we can see, whether it’s e-commerce business or advertising revenue, the shaking of hands has given Aauto Quicker an invisible ceiling. In April this year, Bloomberg reported that the daily living in Tik Tok will reach 680 million in 2021, which is about 2.3 Aauto Quicker.

In terms of e-commerce business, according to public information, the GMV of e-commerce in Tik Tok will exceed 500 billion yuan in 2020, while that in Aauto Quicker will be nearly 400 billion yuan.

In advertising business, Tik Tok’s revenue in the first quarter exceeded 31 billion, about 3.6 times that of Aauto Quicker. Due to the large proportion of private domain weight in Aauto Quicker, users have plenty of time to refresh their "attention pages", which leads to their per capita Feeds being lower than that in Tik Tok, and there is less room for realizing advertisements.

Under the invisible ceiling of Tik Tok, in the next one to two years, it is easy for the capital market to form a more accurate expected upper limit for Aauto Quicker’s income growth.

For investors, this means that it is difficult for the market to make mistakes and it is difficult for investors to have opportunities for excess returns; For Aauto Quicker, there is still a lot of homework to be done to break through this ceiling, both in terms of user growth and commercialization efficiency.