According to China's manned space program, the fourth class of the "Tiangong Classroom" is scheduled to be separated at 15:45 pm on September 21. Astronauts Jing Haipeng, Zhu Yangzhu, and Gui Haichao from the Shenzhou 16 spacecraft will provide space science education to young people across the country. At that time, China Central Radio and Television Corporation will be broadcasting live worldwide. This space teaching activity will continue to be conducted through an interactive approach between heaven and earth. Three astronauts will present in orbit the work and life scenes of the Chinese space station's Dream Experiment Module, demonstrating spherical flame experiments, wonderful "ping-pong ball" experiments, momentum conservation experiments, and the See Again Gyro experiment, and engaging in interactive communication with the ground classroom. As a national space laboratory, the space station carries important functions of science education. Since the mission of the space station, the Shenzhou 13 and Shenzhou XIV crew has carried out three "Tiangong Classroom" space teaching activities for the majority of young people. The social response has been warm, making important contributions to China's popular science education. In the early stage of the teaching content solicitation activity, various sectors of society, especially young people, actively provided suggestions and suggestions through news media, the "Learning Power" platform, and the official website of manned space engineering. Some of the exciting creative designs will be presented in this teaching and subsequent activities. The astronauts of Shenzhou 16 sincerely invite young people to synchronously conduct relevant experiments on the ground, to perceive the mysteries of the universe and experience the joy of exploration from the differences between heaven and earth experiments. (New News Agency)