2. Huixian County belongs to Longnan City, Gansu Province. It is named after Huishan Hill at the foot of Huishan Mountain in the north corner of the city. It is located in the southeast of Gansu Province and the northeast of Longnan City. Huicheng Basin in Qinba Mountain area, located at the southern foot of Qinling Mountain and the upper reaches of Jialing River. Tianshui City in the north, liangdang county City in the east, Chengxian County in the west and Lueyang County in Hanzhong City, Shaanxi Province in the southeast.