Introduction to Qili Gorge: The Forest Park is located in the upper reaches of the Qianqian River (a tributary of the Han River). The main rivers originating from the Forest Park include the Arrow River and the Liangcha River, both of which are tributaries of the Qianqian River. The Arrow River originates from the Bancangliu hillside, flows through Songping and Lotus, and joins the Qianqian River at Tong'an on the Boling Mountains. It has a total length of 28 kilometers, an average width of 15 meters, a drop of 10 meters, and a drainage area of 179 square kilometers. The upper section has high mountains, deep valleys, and fast flowing water. There are the famous Shili Gorge and Qili Gorge, which are as narrow as weirs.