Khalkha Mongols
The main population of the Choros, Olot, Khoid, Baatud, and Zakhchin Oirats who battled against the Qing were killed by the Manchu soldiers and after the fall of the Dzungar Khanate they became small ethnic groups. There were 600,000 Khalkha Mongols and 600,000 Oirats in 1755 and now approximately 2.3 million Khalkha and 640,000 Oirats live in four counties while a few hundred Choros people live in Mongolia.