The crew members aboard China's Shenzhou-13 spacecraft are ready to leave the space station core module Tianhe, while the Dongfeng landing site is making preparations for the return of the three astronauts, the China Manned Space Agency said on Thursday. Zhai Zhigang, Wang Yaping and Ye Guangfu were sent into space aboard the Shenzhou-13 spacecraft and entered China's space station on October 16, 2021, embarking on the country's longest-ever manned space mission.