Introduction to Hengnan: Hengnan County, which is affiliated to Hengyang City, Hunan Province, is located at 112°16′-113°08′ east longitude and 26°32′-26°58′ north latitude. Located in the middle and south of Hengyang City, the middle reaches of Xiangjiang River. The land is controlled by Guangdong and Guangxi, the domain is connected with Chujing, and the three sides are surrounded by Yancheng. Hengnan is surrounded by Hengyang City, and is connected to four districts including Yanfeng District, Tianjing District, Zhuhui District and Shigu District. Hengyang, Hengshan County, Hengdong, Anren, Fuyang, Changning and Jidong For the neighbor. Hengnan County administers 22 towns and 3 townships with a total area of ​​2,688 square kilometers and a total population of 1,118,600 (2013). In 2013, Hengnan County completed a gross domestic product (GDP) of 22.968 billion yuan, an increase of 8.6%. [1-2]