An exceptional group of people returned home in 2021. The taikonauts of the Shenzhou-12 mission arrived on Earth after a three-month stay on China's first space station, the Tiangong. A month later, the Shenzhou-13 crew took off. They're now two months into a six-month mission on the Tiangong. When they return in April, they will have set the record for the longest stay in space in Chinese history.