The Yangtze River, Yangzi River or Chang Jiang is the longest river in China and the third-longest river in the world. It rises at Jari Hill in the Tanggula Mountains of the Tibetan Plateau and flows, 6,374 km (3,961 mi) including the Dam Qu River, the longest source of the Yangtze, in a generally easterly direction to the East China Sea. It is the fifth-largest primary river by discharge volume in the world. Its drainage basin comprises one-fifth of the land area of China, and is home to nearly one-third of the country's population.