Introduction to the Nan Canal: The Nan Canal is a channel that leads people from Hunan to Li. It starts from the southern slope at the end of Xiaotianping and ends at the mouth of Linghe River in Rongjiang Town, where people merge into the Da Rong River. It has a total length of 33.15 kilometers, a drop of 30.26 meters, and an average slope of 33.15 kilometers. It is 0.91 thousandths of a meter. Most of the land it passes through is karst landform. Rock mountains rise from the ground and become independent peaks. Channels wind around the mountains. The scenery is very beautiful.