Lancang River is the upper reaches of the Mekong River in China the name of the river, Tibetan Lachu, meaning "Zhang Zi River." It is also one of the rivers in Southwest China, the seventh longest river in the world, the third longest river in Asia and the longest river in Southeast Asia.
The source of the Lancang River, Qinghai Province, Yushu Tibetan Autonomous Prefecture, northwest of Zado County, Kyrgyzstan, the foot of the foot of the mountain valley song Chung song, from the north of a "Ji Fu Shan" (E94 ° 41'12 ", N33 ° 45'35", 5552 (Glacier end position: E94 ° 40'52 ", N33 ° 45`48", 5160 meters above sea level). The total length of the main stream is 4,909 km, of which the length is 2139 km. The Lancang River flows through Qinghai, Tibet and Yunnan provinces. It is the boundary river between Laos and Myanmar in Mengla County of Xishuangbanna Dai Autonomous Prefecture, Yunnan Province, and Mekong River. Mekong River flows through Laos, Myanmar, Thailand, Cambodia and Vietnam, Ho Chi Minh City in Vietnam into the South China Sea.
