Nujiang River is an important river in China flows from the north to the south. The source is in Tanggula Mountains in Tibet. When you come to learn Chinese in China, you will know it flows through only Tibet and Yunnan but with a length of 2,816 kilometers, covering a drainage area of 324 thousand square kilometers.
The section from the river source to Jiayu Bridge is the upstream. The undulation of mountains is slow and the valleys are shallow. Some foreign learners who study Chinese in China may be told it covers 50% of the whole drainage area. The midstream of Nujiang River is from Jiayu Bridge to Lushui, which is a pinnate drainage. The second largest gorge area is formed in this area. If you study Mandarin in China, you may know the water surface in the downstream is wide and the depth of valley ranges from 500 to 1,000 meters.
There is a rich potential hydro energy in Nujiang River. Due to the rich runoff and large water drop, the reserve of hydro energy reaches 355 million kilowatt. Students who learn Chinese in China may be also told that there is rich mineral resource in Nujiang drainage.