The Longtan River Scenic Area is located in the northeastern part of Sichuan Province, at the junction of Sichuan, Shaanxi and Yunnan provinces. The main tourism activities in the scenic area are rafting, expedition and leisure. Longtan River originates from Mount Baiji in Chengkou County, Chongqing City. Its main source is located in the twin pools under the giant twin rock gates in the Longtan River Scenic Area, being the large and small, clear and muddy, cold and hot Yinyang Spring, also known as the Cold and Hot River. There are ten peaks and eight lakes in the Longtan River Basin. The water is clear and pure, and the river flows fluently. Both sides of the straits have amazing peaks and many exotic birds and fragrant flowers.