Qijiehe River runs to underground to form swallet stream from the end of Gouyaoyan Gorge. The riverway is wide at some places and narrow at other places, and the widest place is about 20-35m while the narrowest place is less than 2m with the height of 50-75m. Finally, Qijiehe River runs out of Youcaichong Gorge and changes to free flow. The water yield at both the outlet and the inlet is basically the same, and it’s length is 1305m.