Introduction to Daying River: Daying River is a tributary of the upper reaches of the Irrawaddy River, originating from the southern foot of Gaoligong Mountain. The Daying River was called Taiping River in ancient times and is the largest natural river in the territory. The right branch of the upper reaches is the Binlang River and the left branch is the Nandi River. It is called the Daying River after it meets at Xialaxiang Village in the old town. The total length of the country is 204.5 kilometers, of which the main road of Dayingjiang River is 77.25 kilometers long. The main tributaries are Machutang River, Zhanda River, Husong River and Husa River. It is an important irrigation water system in the dam area of ​​Yingjiang County and also the main tributary of Yingjiang River. One of the most hazardous water systems in the county.