tongxinxianIntroduction：Concentric introduction: Tongxin County is in the south-central part of Ningxia Hui Autonomous Region and is under the jurisdiction of Wuzhong City. Geography East is connected with Yanchi County, Qingyang City, Gansu Province, south of Guyuan City, and adjacent to Shapotou District of Zhongwei City, Zhongning County and Haiyuan County. It borders Wuzhong City’s Hongsibao District in the north, in Erdos. On the Loess Plateau in the southern part of the platform, the terrain is high in the south and low in the north. It is 1240-2625 meters above sea level and belongs to the hilly and gully area. There are five types of landforms: mountains, loess hills, river valleys, and desert depressions. The terrain is complex and the mountains and rivers are staggered. There are Luoshan, Mishan, Ma Dashan, Laoyeshan, Qinglongshan, Yaoshan, etc., all belong to the Liupan Mountains.