Buir Nuur

Buir Nuur is a country of open grassland and freshwater on the eastern Mongolian steppe. The Khalkh River enters the lake through a delta of reeds and wet meadows, and the Orshuun carries its waters north. In 1388 a Ming army under Lan Yu surprised the Northern Yuan camp near the lake. Tögüs Temür escaped, but many of his followers were captured, and the defeat marked a severe blow to the Mongol court that had withdrawn into the steppe after the fall of the Yuan capital.