The Yalong River, also called Ya-lung River (Chinese: 雅砻江; pinyin: Yǎ lóng jiāng, Tibetan: Wylie: nyag chu) is an 822 mile (1,323 kilometers) long river in the Sichuan province of southern China. It flows into the Yangtze River along the border with Yunnan. It is a tributary of the Yangtze River. Its source originates from the Tibet-Qinghai Plateau in southeast Qinghai, and its confluence with the Yangzte is in north central Yunnan.