Drive by Hukou, along the yellow road, about an hour and a half to reach the Yellow River Longmen Scenic Area of Hancheng, Longmen is the throat of the Yellow River, located about 27 kilometers north of the Han city, the Yellow River Canyon sandwiched by mountains to the north, and the flat plain to the south. Legend is that this is the place where Daqi treats the water, so it is also called Anus. There is a bridge at the entrance of the Yellow River in Longmen. It is a cable-stayed bridge with railway bridges and highway bridges. It runs through Shaanxi and Jin, and it is magnificent. The original steel-beam bridge is still there, a testimony to the past.