Students attend a live class given by the Shenzhou-13 crew members, in Kangxian County, northwest China's Gansu Province, Dec. 9, 2021. The first live class from China's space station was held on Thursday afternoon, given by Shenzhou-13 crew members Zhai Zhigang, Wang Yaping and Ye Guangfu to students on Earth. (Xinhua/Chen Bin)
