During the lecture, the astronauts conducted real-time interactive exchanges with the teachers and students of the ground classroom through video calls, and the ground classroom experts also carefully analyzed the relevant scientific issues. In this activity, the main ground classroom was set up in the Space Application Engineering and Technology Center of the Chinese Academy of Sciences, and three ground sub-classrooms were set up in Heze, Shandong, Zhengzhou, Henan, and Dali, Yunnan. About 400 representatives of primary and secondary school students participated in the on-site activities.