Because Tiangong-1’s mission plan was determined as early as 1992 when the country formulated China’s “three-step” strategy for manned spaceflight. In 2002, after program demonstration and review, the entire mission plan for the Tiangong-1 target aircraft was approved. However, Tiangong-1 has not yet been named, it is just called the "Target Aircraft", abbreviated as MB. In 2006, Tiangong-1 entered the preliminary prototype development stage and was named "Tiangong-1", abbreviated as TG[12]. The naming may be based on the following points: First, it is hoped that the place where astronauts live in space can be as comfortable as a palace [13]. ——Wang Han, engineer of China Academy of Space Technology Second, it has Chinese characteristics, echoes "Shenzhou" and "Chang'e", and has a concept of a real space station prototype[14][12]. ——Bai Mingsheng, deputy chief designer of the space laboratory system of China Aerospace Science and Technology Corporation