Not long ago, the performance competition of the summer science popularization activity "Tiktok Water Rocket Science Day" ended. During the exhibition competition, teenagers and technology enthusiasts from all over the country gathered in Yizhuang, Beijing and successfully launched multiple "homemade rockets". The live broadcast of the exhibition competition attracted 2.39 million online viewers. This event has undergone nearly two months of online solicitation, with over 1300 video submissions. Seven outstanding representative teams were invited to Beijing to participate in the exhibition competition. The "homemade rockets" participating in the competition have different shapes and materials. As these "home-made rockets" were launched in the countdown, netizens in the broadcast room left messages saying: "Chinese teenagers' rockets are too hot", "interest is the best teacher", "planted a seed for aerospace"... At the scene of the short video scientific experiment with fire, Zhuang Fengchen, a 92 year old academician of the CAS Member, recorded the scene of the launch with his mobile phone. He shared his story with the Rockets during the roundtable session. In 1960, he went to the Soviet Union for further studies as a teacher specializing in boiler manufacturing at Harbin Institute of Technology. In April of the following year, he saw the Soviet Union launch the world's first manned spacecraft and began researching rocket engine combustion. Science popularization writer Zheng Yongchun said that he witnessed the leapfrog development of China's aerospace industry on the path of high-level technological self-reliance and self-improvement. And the children present on that day may achieve goals such as manned moon landing and Mars sampling in the future, and China's aerospace industry will also take a leading position in the relay of generation after generation. The achievements of China's aerospace industry, from the "Eastern Red" spacecraft's exploration of space to the "Shenzhou" spacecraft's inquiry into the sky, are inspiring. How to better inspire young people's scientific dreams has become a "must answer question" for science teachers. Short videos have become one of the paths they explore. Water rocket is one of the six major experiments included in the primary school science curriculum. Its principle is the same as that of real rockets, and its production can be complex or simple. Many schools across the country have held water rocket competitions, which are the category with the best demonstration effect in scientific experiments. Today, water rocket is also the most popular scientific experiment on Tiktok. According to statistics, the total number of videos related to water rockets in 2023 increased by 789% year-on-year, and the number of creators of such videos increased by 62% year-on-year. Cheng Siheng, the head of the aviation model team of Huaihua Normal College, who participated in the performance match that day, said: "We chose water rockets as thrusters because of the cheap materials. We searched Tiktok for many water rocket courses. Relying on these courses, we worked out a little by little." In the view of "Wang Yin, the science teacher", the creator of Tiktok, teaching children to do water rockets is an important way to combine aerospace science popularization with education. Wang Yin's water rocket video has won more than 2 million praise in Tiktok, attracting many teachers and parents to follow suit. Xu Hui, R&D specialist at Xinghua Science Education Research Institute in Guilin, Guangxi, has over ten years of experience in water rocket research and has trained thousands of physics and science teachers offline. He said, "Water rockets are a very good practical project that can integrate science, engineering, and technology. Teacher Wang Yin ignited water rockets with short videos, and various creative water rockets were well displayed." With the "cloud courseware," frontline teachers mainly use text and images for scientific experiment tutorials. Video tutorials make experimental operations more intuitive and the results easier to verify. These videos have become "cloud courseware" for frontline teachers, which can be played to students at any time in the classroom. Meanwhile, some rural school teachers who lack experimental equipment and funding can also use discarded plastic bottles to "replicate" and "upgrade" experiments. It is reported that a teacher has developed a simpler version of the water rocket based on Wang Yin's tutorial, starting a scientific relay in the cloud. The 2023 Tiktok Scientific Experiment Data Report shows that at present, there are 4.73 million videos related to scientific experiments on Tiktok, with a cumulative gain of 49.2 billion plays and a cumulative playing time of more than 16.29 million minutes. Calculated at 45 minutes per class, it is equivalent to 362000 laboratory classes. In 2023, the search data of Tiktok scientific experiment will increase by 230% year on year. Short videos have greatly lowered the threshold for acquiring knowledge, expanded the traditional boundaries of scientific popularization, not only expanded the boundaries of knowledge production, but also opened up new channels for knowledge dissemination. More importantly, it lowers the threshold for children to perceive science - through short videos, science creators can make scientific experiments accessible in the simplest way, at the cheapest price, and with the most convenient materials. (New Society)