Hengshan, also known as Nanyue, is one of the five mountains in China. It is located in Nanyue District, Hengyang City, Hunan Province, at an altitude of 1300.2 meters. Since the climatic conditions are better than other four mountains, there are Maolin bamboos everywhere, green all year round; The flowers and grasses, the fragrance at four o'clock, the natural scenery is very beautiful, so there is a "Nanyue Duxiu" or "Five Yues Duxiu" reputation. Qing Wei Yuan "Hengyue Yin" said: "Hengshan is like a row, Lushan is like sitting, Huashan is like standing, Lushan is like lying, only Nanyue is like flying."