Changsha is the capital of Hunan Province and the political, economic, cultural, transportation, science and technology, finance and information center of Hunan Province. It is located in the eastern and northern part of Hunan Province, the lower reaches of Xiangjiang River and the western edge of Changliu Basin. The geographical range is 27 53' ~ 28 41'north latitude and11153' ~115' east longitude. It is adjacent to Yichun and Pingxiang in Jiangxi Province in the east, Zhuzhou and Xiangtan in the south, Loudi and Yiyang in the west and Yueyang and Yiyang in the north. Changsha has large topographic relief, diverse landform types and developed surface water system. Changsha, located in the southeast of China, has a subtropical monsoon climate.