Riddle: Swim across the river alone? What is the answer to the riddle of Yitouge (a place name in Sichuan)?

Tips: The Dadu River is the largest first-class tributary of the Minjiang River system. It enters Liangshan in the north of Heima Township, Ganluo County, and exits through the Wus Bridge. It is the boundary river between Ganluo County and Ya'an Hanyuan County. , the state is 35 kilometers long and the water surface is 130 meters wide. The state's watershed area is 4,526 square kilometers.

Riddle: Swimming across the river alone? Yitouge (a place name in Sichuan)

Answer: Dadu River