The Yarlung Zangbo River has a big turn at the juncture of four counties of Nyingchi, Mainling, Medog and Borne. To the east of the turn stands the 7,782-meter-high Namjagbarwa Peak, the 15th highest peak in the world. In face of the Indian Ocean, it reflects an obvious vertical landform. In its valley is tropical rain forest and above the snow line, it is a snow world.

(Itinerary recommended: It is 404 kilometers from Lhasa to Bayi Town along the Sichuan-Tibet Highway and 75 kilometer from Bayi to Mainling. Then you can go eastward along the Yarlung Zangbo River for 9l kilometers and arrive in Pai, then go northward again to Gegar and walk to Andidanggar, the 3,512-meter-high camp for mountaineering the Maulagbarwa Peak.)