The Landing Site System is mainly responsible for the searching and recovering of the landed re-entry module, and the rescuing of the astronauts. The main landing site is located in the middle area of Inner Mongolia, and a backup site is located to the east of Jiuquan Satellite Launch Center. Furthermore, some landing zones of emergency rescue during the ascending phase and the orbiting phase have been set up on the land (at Yulin, Handan, Suining,etc.), as well as in three sea areas.