Also known as Huguang (湖广), it is the varient of Mandarin Chinese widely spoken south of the Yangtze River, and east of the Tibetan Plateau. This article is on all of the Northern Chinese dialects. ... Afternoon light on the jagged grey mountains rising from the Yangtze River gorge The Yangtze River or Chang Jiang is the longest river in Asia and the third longest in the world after the Amazon in South America and the Nile in Africa. ... Tibet Autonomous Region, Qinghai Province and Sichuan Province of China lie on the Tibetan Plateau. ...