evidence: Geopolitical area comprising a large part of China From Wikipedia, the free encyclopedia "Mainland China", also referred to as "the Chinese mainland", is a geopolitical term defined as the territory under direct administration of the People's Republic of China (PRC) in the aftermath of the Chinese Civil War. In addition to the geographical mainland, the geopolitical sense of the term includes islands such as Hainan, Chongming, and Zhoushan.[1] By convention, territories outside of mainland China include: