China Tibetan Mountains. "Tanggula" is Tibetan, which means "the mountain on the plateau". The eastern part is the boundary mountain between Tibet and Qinghai, and the southeastern part is connected with Hengduan Mountains (Taniantaon Mountain and Yunling Mountain). The height of the mountain range is about 6000 meters, of which the highest peak is 662 1 meter in winter and the Tanggula Mountain (peak name) is 6099 meters. The piedmont plains on both sides are at an altitude of 4600? 6? 54,800 meters, then the relative height difference is only 1300? 6? 5 1, 500 meters. The snow line is at an altitude of 5400? 6? 55,500 meters. There are small glaciers on the top of the mountain. It is the source of the Yangtze River, Lancang River and Nujiang River. The temperature is low, the annual average temperature is -4.4℃ (Tuotuohe Station), and there is frozen soil with a thickness of 70? 6? 588 meters. The Qinghai-Tibet Highway runs through here. The vegetation is mainly alpine grassland, mixed with cushion plants.