Originating in the northeast of Tengchong County, the Daying River belongs to the Irrawaddy River system, along the confluence of many streams, the amount of water gradually abundant. Located in Tengchong County, 1 km west of this place is surrounded by cliffs, the Grand Ying River water flow through here, from more than 30 meters high rock fall, the sound of thunder, splashing, the formation of a "no bow bomb flower since the scattering" of the magnificent landscape, it is said that in the sunlight often appear seven-color rainbow, very beautiful.