Tannu Uriankhai
With the fall of the Yuan dynasty in China (1279–1368), Tannu Uriankhai was controlled by the Oirots (western Mongols, also known as Zungars) until the end of the 16th and early 17th centuries. Thereafter, the history of western Mongolia, and by extension Tannu Uriankhai (more as a spectator than as a participant), is a story of the complex military relations between the Altan Khanate (Khotogoit tribe) and the Oirots, both competing for supremacy in western Mongolia.