Ouyang Service Area is located in Guiyang County, Chenzhou City, Hunan Province, at K963, Chenzhou Section, expressway, Guiyang County, Chenzhou City, Hunan Province. Guiyang County, alias Rongcheng, is located in the west of Chenzhou City, at the northern foot of Nanling Mountain, in the middle and upper reaches of Fuling River, a tributary of Xiangjiang River, bordering Beihu District in the east, Xintian and Jiahe in the west, Qiyang, Changning, Leiyang and Yongxing in the north, and Guangdong in the south, belonging to Chenzhou City, Hunan Province. Guiyang county covers a total area of 2958 square kilometers, and governs 2 townships, 17 towns and 3 streets. In 20021year, the county's annual GDP was 4131300 million yuan. By March 2023, the total population will be 90 1 10,000. Guiyang has successively obtained and maintained the National Demonstration County for Leisure Agriculture and Rural Tourism, the National Pig Transfer County and the National Grain Production County.