The 60-kilometer tributary of the Yangtze River, rises in the southern part of Shennongjia Natural Reserve and joins the Yangtze at Xirangkou in Hubei's Badong County. It runs out of the deep valley through the forest at a height of 3000m above sea level, and rushes southward between rocky cliffs. It covers 60 km and totally 17 rivers and streams flow into it. One of the most important ports of call for Yangtze Three Gorges tour.