Changsha is the capital and most populous city of Hunan Province in the south central part of the People's Republic of China. It covers 11,819 km2 (4,563 sq mi) and is bordered by Yueyang and Yiyang to the north, Loudi to the west, Xiangtan and Zhuzhou to the south, Yichun and Pingxiang of Jiangxi province to the east. According to the 2018 estimation, Changsha had 8,154,700 residents, constituting 11.82% of the province's population. Its built-up or (metro) area made of 6 urban districts plus Changsha county largely being urbanized is home to 5,498,400 inhabitants. It is part of the Chang-Zhu-Tan city cluster or megalopolis with 15,040,300 inhabitants being conurbated. Changsha is in the Xiang River valley plain, bordering the Luoxiao Mountains on the east, Wuling Mountains on the west, edging in Dongting Lake on the north and bounded on the south by the Hengshan Mountains. It has a monsoonal humid subtropical climate, with an average annual air temperature of 16.8 to 17.3 °C and an annual rainfall of 1,358.6 to 1,552.5 mm.
