The Ming founder Zhu Yuanzhang employed Muslim generals like Lan Yu who rebelled against the Mongols and defeated them in combat. Some Muslim communities were named "kamsia," which, in Hokkien Chinese, means "thank you"; many Hui Muslims claim that their communities were named "kamsia" because the Han Chinese appreciated the important role which they had played in assisting them to overthrow the Mongols.[34] The Muslims in the Semu class also revolted against the Yuan dynasty in the Ispah Rebellion but the rebellion was crushed and the Muslims were massacred by the Yuan loyalist commander Chen Youding.