Yulshul Tibetan Autonomous Prefecture (Tibetan: ཡུལ་ཤུལ་བོད་རིགས་རང་སྐྱོང་ཁུལ།, ZYPY: Yüxü Poirig Ranggyong Kü, Lhasa dialect IPA: [[jỳɕúː pʰø ̀rik ràŋcoŋkyː(l)]]), commonly known as Yushu (Chinese: 玉树藏族自治州; retranscribed into Tibetan as ཡུས་ཧྲུའུ།), is an autonomous prefecture of southwestern Qinghai province, People's Republic of China. Largely inhabited by Tibetans, the prefecture has an area of 188,794 square kilometres (72,894 sq mi) and its seat is located in the town of Gyêgu in Yushu County, which is the place of the old Tibetan trade mart of Jyekundo. The official source of the Yellow River lies within the prefecture.