Territorial changes of the People's Republic of China
The territory of the People's Republic of China (PRC) has frequently been revised since its formation on 1 October 1949. Until 1986, the total territory (or under control) of the PRC was 10.45 million km2, including: Continental mainland: ~9.60 million km2 Islands and reefs: ~75,400 km2 Coastal beaches and shoaly lands: ~12,700 km2 Inner sea (mainly Bohai Sea): ~693,000 km2 Territorial (sea only) waters: ~220,000 km2 During the 1990s and 2000s, the official size and value of China's territory are rarely officially declared or published.
Source: Wikipedia — Territorial changes of the People's Republic of China (CC BY-SA 4.0)