Introduction to the upper section: Touring the Lancang River can be divided into two sections, the upper section and the lower section. The upper section starts from Jinghong and goes upstream to Tiger Leaping Stone. The river surface gradually shrinks, reaching the narrowest point of about 20 meters. The river is turbulent, the rocks on the shore are towering, the trees are densely shaded, animals are singing and birds are singing, and the animal and plant landscape is very rich.