Sauyr Zhotasy (Kazakh: Сауыр жотасы), also known as Muz Tau (Chinese: 木斯岛山; pinyin: Mùsīdǎo Shān), is the highest point in the Saur Range, and of the entire Saur-Tarbagatai mountain system, part of the Tien Shan, on the border between Kazakhstan and China. It lies 100 kilometres (60 mi) southeast of Zaysan Lake.