However, that decision has now left the crew of Shenzhou-21, astronauts Zhang Lu, Wu Fei, and Zhang Hongzhang without a vessel to return to Earth in case of another space emergency. On Friday, the China Manned Space Agency (CMSA) announced that the Shenzhou-22 spacecraft will be launched 'at an appropriate time in the future,' with the likely goal of bringing replacements for the Shenzhou-21 team.