The crew of the Shenzhou-19 mission arrived at Tiangong in late October last year and during their stay, they conducted extravehicular activities and scientific research . Cai Xuzhe, Wang Haoze, and Song Lingdong,

The three Chinese astronauts have carried out experiments and improvements to the space station during their time in space. Two of the astronauts, Cai and Song, conducted a nine-hour spacewalk, the world’s longest, during their mission, China's space agency said.