The Chahar royal family kept favorable relations with the Manchu imperial family until Makata gege, who was a daughter of Hong Taiji and married to the Chahar Mongol prince, died in 1663. When the Rebellion of the Three Feudatories erupted in 1673, the Chahar Mongol prince revolted against the Qing Dynasty. He was soon crushed and, as a result, the Chahar Mongols were reorganized into the Chahar Eight Banners and moved to around Zhangjiakou Hill. The Chahar Mongols did not belong to a league but were directly controlled by the Emperor. The Qing authority resettled part of them from suburbs of Hohhot and Dolonnur to Ili after the fall of the Zunghar Khanate in c. 1758. They were largely mixed with Ööled and Torguud of the region.
When Outer Mongolia declared its independence in 1911 from the Qing, 100 households under former vice-governor Sumya fled from Xinjiang via Russian border to Mongolia. They were resettled by the Khalkha in the west of Kyakhta. Sumiya and his Tsahars contributed to revolution of 1921. They are known as the Selenge's Tsahar since settled in Selenge.