Huainan () is a prefecture-level city with 2,334,000 inhabitants in central Anhui Province, People’s Republic of China.
 It borders the provincial capital of Hefei to the south, Lu'an to the southwest, Fuyang to the west, Bozhou to the northwest, Bengbu to the northeast and Chuzhou to the east.
Wuzhishan () is a county-level city in the south-central part of Hainan, a province of the People's Republic of China.
 Although called a "city", Wuzhishan refers to a large land area in Hainan - an area which was once a county.
 Within this area is the main city, Wuzhishan City.
 It was originally called Tōngzá () and is located beside Wuzhi Shan, the mountain.
 The city's total area is 1129 square kilometres, and its population is 115,000 people.
 Its postal code is 572200, and its district number is 0898.
Wuzhi Mountain () is the highest mountain in Hainan, China, towering 1840 m above the center of Hainan Island.
 The surrounding areas of Wuzhi Mountain are inhabited mainly by the Li ethnic group.
 It is located adjacent to Wuzhishan City but is not part of that city's administrative area.

Question: Huainan and Wuzhishan City, in in which country?
Answer: People's Republic of China