Diqing, Nujiang, Dali, Baoshan, Lincang, Pu'er, Xishuangbanna.

The Lancang-Mekong River system breeds the world's richest freshwater fish ecosystem, second only to the Amazon River Basin. When it reaches Xishuangbanna, it has entered the beautiful tropical rainforest. After flowing out of the country, most of it is covered by dense forests. There are many rare birds and animals in the forest, such as elephants, bears, tigers, leopards, bison, rhinos, blue sheep, peacocks, etc., but the most famous is the elephant.