<P> The Jinsha River (金沙 江, lit . "Gold Dust" or "Golden - Sanded River") is the name for 2,308 km (1,434 mi) of the Yangtze from Yibin upstream to the confluence with the Batang River near Yushu in Qinghai Province . From antiquity until the Ming Dynasty, this stretch of the river was believed to be a tributary of the Yangtze while the Min River was thought to be the main course of the river above Yibin . In the Tribute to Yu, written in the fifth century BCE, this section is called the Hei Shui 黑 水 or the "Black Water ." The name "Jinsha" originates in the Song dynasty when the river attracted large numbers of gold prospectors . Gold prospecting along the Jinsha continued to this day . Prior to the Song dynasty, other names were used including, for example Lújiāng (瀘 江) from the Three Kingdoms period . </P> <P> The Tongtian River (通 天河, lit . "River Passing Through Heaven") describes the 813 km (505 mi) section from Yushu up to the confluence with the Dangqu River . The name comes from a fabled river in the Journey to the West . In antiquity, it was called the Yak River . In Mongolian, this section is known as the Murui - ussu (lit . "Winding Stream"). and sometimes confused with the nearby Baishui . </P> <P> The Tuotuo River (沱 沱 河, p Tuótuó Hé, lit . "Tearful River" is the official headstream of the Yangtze, and flows 358 km (222 mi) from the glaciers of the Gelaindong Massif in the Tanggula Mountains of southwestern Qinghai to the confluence with the Dangqu River to form the Tongtian River .) In Mongolian, this section of the river known as the Ulaan Mörön or the "Red River". </P> <P> The Tuotuo one of three main headstreams of the Yangtze . The Dangqu River (当 曲, p Dāngqū) is the actual geographic headwater of the Yangtze . The name is derived the Classical Tibetan for "Marsh River" (འདམ ་ ཆུ, w' Dam Chu). The Chumar River (楚 玛 尔 河) is the Chinese name for the northern headwater of the Yangtze, which flows from the Hoh Xil Mountains in Qinghai into the Tongtian . Chumar is Tibetan for the "Red River ." </P>

What is the source of the yangtze river