Chahar Mongols in the context of "Khalkha Mongolian"

The Revolt of the Three Feudatories, (Chinese: 三藩之亂; pinyin: Sānfān zhī luàn) also known as the Rebellion of Wu Sangui, was a rebellion lasting from 1673 to 1681 in the early Qing dynasty of China, during the reign of the Kangxi Emperor (r. 1661–1722). The revolt was led by Wu Sangui, Shang Zhixin and Geng Jingzhong, the three ethnic Han lords of Yunnan, Guangdong and Fujian provinces whose hereditary titles were given to them for defecting to and helping the Qing dynasty conquer China proper, who rebelled after the Qing central government started abolishing their fiefs. The feudatories were supported by Zheng Jing's Kingdom of Tungning on the island of Taiwan, which sent forces to invade Mainland China. Additionally, minor Han military figures, such as Wang Fuchen, and the Chahar Mongols, also revolted against Qing rule.

Due to their history as defectors that helped to topple the Southern Ming dynasty, the Three Feudatories failed to win over the support of the general Han populace and were eventually defeated by the Qing forces. After the last remaining Han resistance had been put down, the former princely titles were abolished.

Khutugtu Khan (Mongolian: Хутагт Хаан; Chinese: 庫圖克圖汗), born Ligdan (Mongolian: Лигдэн; Chinese: 林丹), (1588–1634) was a khagan of the Northern Yuan dynasty, reigning from 1604 to 1634. During his reign, he vigorously attempted to reunify the divided Mongol Empire, achieving moderate levels of success. However, his unpopular reign generated violent opposition due to his harsh restrictions over the Mongol tribes as he attempted to centralize the state. His alliance with the Ming dynasty, sponsorship of Tibetan Buddhism in Chakhar and the reorganization of Mongol political divisions were ineffective when the Later Jin dynasty became the major power in East Asia.