China Manned Space Agency in the context of "Tiangong Space Station"

The China Manned Space Program (CMS; Chinese: 中国载人航天工程; pinyin: Zhōngguó Zàirén Hángtiān Gōngchéng), also known as Project 921 (Chinese: 九二一工程; pinyin: Jiǔèryī Gōngchéng) is a space program developed by the People's Republic of China and run by the China Manned Space Agency (CMSA) under the Equipment Development Department of the Central Military Commission, designed to develop and enhance human spaceflight capabilities for China. It was approved on 21 September 1992 and has been in operation ever since. The CMS commander and director are currently Xu Xueqiang and Zhou Jianping respectively; the latter has held this position since 2006, after taking over from Wang Yongzhi, who served as the first director from 1992 to 2006.

As one of the most complex programs within the Chinese space agency, CMS was split into "three steps":

The Equipment Development Department of the Central Military Commission (Chinese: 中央军委装备发展部) is a first-level unit of deputy theater grade under the Central Military Commission of the People's Republic of China. It was founded on January 11, 2016, under Xi Jinping's military reforms. The department mission is to coordinate, oversee, and foster the development and acquisition of military equipment. General Zhang Youxia served as the first director. The current director is Xu Xueqiang. It also registers the patents related to military technology. The China Manned Space Agency is also hosted there and the department plays a critical role in the Chinese space program.

The Tiangong space station (Chinese: 天宫空间站; pinyin: Tiāngōng kōngjiānzhàn; lit. 'Heavenly Palace space station'), is a permanently crewed space station constructed by China and operated by China Manned Space Agency. Tiangong is a modular design, with modules docked together while in low Earth orbit, between 340 and 450 km (210 and 280 mi) above the surface. It is China's first long-term space station, part of the Tiangong program and the core of the "Third Step" of the China Manned Space Program; it has a pressurised volume of 340 m (12,000 ft), slightly over one third the size of the International Space Station. The space station aims to provide opportunities for space-based experiments and a platform for building capacity for scientific and technological innovation.

The construction of the station is based on the experience gained from its precursors, Tiangong-1 and Tiangong-2. The first module, the Tianhe core module, was launched on 29 April 2021. This was followed by multiple crewed and uncrewed missions and the addition of two laboratory modules. The first, Wentian, launched on 24 July 2022; the second, Mengtian, launched on 31 October 2022.