Galdan Boshugtu Khan
The Kangxi Emperor organized a congress of the rulers of Khalkha and Inner Mongolia in Dolnuur in 1691 at which the Khalkha feudatories (the Khalkha Khanate or Eastern Mongolia) by Zanabazar's decision formally declared allegiance to the emperor. However, Khalkha "de facto" remained under the rule of Galdan Boshugtu Khan. Chakhundorj fought against the Russian invasion of northern Mongolia until 1688. Zanabazar struggled to bring together the Oirats and Khalkhas before the war. Qing forces invaded Khalkha in 1696 and the Oirats were defeated by the outnumbering enemy in a battle at Zuun Mod at the river Terelj. Galdan Boshugtu Khan died in 1697 in the region of Kovd.