Hainan (Chinese: 海南; Mandarin Pinyin: Hǎinán (help·info); Jyutping: Hoi² Naam4; Pe̍h-ōe-jī: Hái-lâm; literally "South of the Sea [Qiongzhou Strait]") is the smallest and southernmost province of the People's Republic of China (PRC). The name "Hainan" also refers to Hainan Island (海南岛, Hǎinán Dǎo), the main island of the province. Hainan is located in the South China Sea, separated from Guangdong's Leizhou Peninsula to the north by the shallow and narrow Qiongzhou Strait.
For centuries Hainan was part of Guangdong Province then in 1988 the island became part of the newly created Hainan Province (海南省, Hǎinán Shěng).
Hainan Province is the largest Special Economic Zone laid out by Chinese leader Deng Xiaoping in the late 1980s.
There are a total of eight major cities and ten counties in Hainan Province. Haikou on the northern coast of Hainan Island is the capital whilst Sanya is a well-known tourist destination on the south coast. The other major cities are Wenchang, Qionghai, Wanning, Wuzhishan, Dongfang and Danzhou.
--Introduction from wikipedia