The Khalkha Mongols pay tribute to the Qing Empire but have preserved their independence.

A conflict between the Houses of Jasaghtu Khan and Tösheetü Khan escalates into a dispute between the Khalkha and the Dzungar Mongols over influence over Tibetan Buddhism.

Choros Erdeniin Galdan, a Choros-Oirat Khan of the Dzungar Khanate, is the fourth son of Erdeni Baatur Hongtaiji, founder of the Dzungar Khanate, and the grandson of Güshi Khan, the first Khoshut-Oirat King of Tibet.

Galdan invades and occupies the Khalkha homeland to oppose the expansion of the Manchu.