Introduction to Baopingkou: Baopingkou functions as a "control gate" and can automatically control the water inflow of the Inner River. It is a hole cut on the long ridge of Jianshan Mountain extending towards the Minjiang River. It is artificially cut to control the water inflow of the Inner River. The throat is named Baopingkou because it looks like the mouth of a bottle and has strange functions. Due to the magnificent natural landscape of Baopingkou, it is known as "Lidusuo Gorge" and is one of the famous "Ten Scenic Spots of Guanyang" in history.