Guidong County is a county under the jurisdiction of Chenzhou City, Hunan Province, China. It is located in the southeast of Hunan Province, bordering Jiangxi Province. Guidong county is located in the composite part of the relative uplift belt of Nanling banded structural belt and the relative uplift belt of Xinhua Building structural system. Due to climatic conditions, a fairly thick weathering crust, linear erosion of flowing water and surface erosion have been formed, thus forming a landform with deep valleys and steep slopes, mainly mountainous areas. Dongshan Mountain in Guangxi has high mountains and deep valleys, overlapping mountains and ravines.