I have seen Hukou Waterfall before. However, that time was winter, and the water potential was far less than it is now. The Yellow River here is the boundary river between Shanxi and Shaanxi. To the west of Hukou Waterfall is Hukou Township, Yichuan County, Yan'an City, Shaanxi Province, and to the east is Hukou Town, Jixian County, Linfen City, Shanxi Province. Personally, I think the Jixian side is more beautiful, while the Yichuan side seems to have built a wall along the riverside road. Hukou Waterfall is the second largest waterfall in China and the largest yellow waterfall in the world. At this point of the Yellow River, the stone walls on both sides of the river stand steeply, and the mouth of the river shrinks like a Hukou. I was lucky this time, and it was raining heavily on the road. When we arrived, the clouds opened and the sun rose. The water potential of the Yellow River is huge, pouring down from the cliff more than 20 meters high, majestic and magnificent, "a thousand miles of the Yellow River can be harvested in one pot".