Introduction to Yuxi River Valley: Yuxi River was called the emperor's raw water in ancient times. Its source is a clear spring in Shawo. It winds from the distant Hetao, with a total length of more than 200 kilometers and a controlled drainage area of ​​5,537 square kilometers. It is the main tributary of Wuding River and a land of plenty in Yulin area. This fertile river valley is like a green ribbon. The Yuxi River flows slowly, passing by the land of plenty and plenty around it.