Introduction to Biandukou Ecological Leisure Tourism Area: Biandukou, known as Dadouba Valley in ancient times, is located in the southeast of Minle County and in the middle of the Qilian Mountains. National Highway 227 (Xining-Zhangye) runs through it, with Zhangye, Lanzhou and Xining as its peaks. The triangular tourism ring is a plateau eco-tourism area that integrates history, culture, natural scenery, summer vacation and leisure, and outdoor sports. It has been identified as a national mass mountaineering fitness base and an international self-driving tour camp.