Erlang Mountain is located in Tianquan County, Ya'an City, 172 kilometers away from Chengdu, at an altitude of 3,437 meters, which is the natural watershed of the Qingyi River and Dadu River. Up the higher place, you can see the snow peaks of Gongga Mountain in Sichuan. Compared with the forest parks around the city, there is more primitive wildness. This temperament is given by nature, and it is also the temperament of the original ecological forest such as Erlang Mountain.