Coordinates: 39°12′N 98°32′E / 39.200°N 98.533°E / 39.200; 98.533 The Qilian Mountains (simplified Chinese: 祁连山; traditional Chinese: 祁連山; pinyin: Qílián Shān; Wade–Giles: Ch'i2-lien2 Shan1, also romanized as Tsilien; Mongghul: Chileb), together with the Altyn-Tagh (Altun Shan) also known as Nan Shan (Chinese: 南山, literally "Southern Mountains"), as it is to the south of Hexi Corridor, is a northern outlier of the Kunlun Mountains, forming the border between Qinghai and the Gansu provinces of northern China. From Wikipedia