《明史·志·卷六十八》
又按割取敌人耳朵的多少评定功绩，最多的高达进升二级，世代承袭。
又以割耳多寡论功，最多者至升二秩，世袭。
It also assessed merits according to the number of enemy ears cut off, with the highest being promoted to the second level and passed on from generation to generation.