Yarkent Khanate
The Dzungars had conquered and subjugated the Uyghurs during the Dzungar conquest of Altishahr after being invited by the Afaqi Khoja to invade the Chingisid Chagatai ruled Yarkent Khanate. Heavy taxes were imposed upon the Uyghurs by the Dzungars, provoking resentment. This led to uprisings and Uyghur rebels from Turfan and Kumul who were rebelling against Dzungar rule joined the Qing in their war against the Dzungars. The Yarkent Khanate under Muhammad Amin Khan presented tribute to the Qing dynasty twice to request aid against the Dzungar attack.