evidence: Mainland China "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: [...] Hainan is an island, but is nevertheless commonly considered to be part of the "mainland" politically, because its government, legal and political systems do not differ from the rest of the PRC. Nonetheless, Hainanese people still refer to the geographic mainland as "the mainland" and call its residents "mainlanders".[15][better source needed]