《三国志·魏书·乌丸鲜卑东夷传》
但是乌丸、鲜卑逐渐又强盛起来。又因为汉代末年极为混乱，国内正值多事之秋，没有功夫讨伐外来侵略者，因此，他们竟侵占控制了漠南之地，攻陷城市，烧杀百姓，北边也受到困扰。
然乌丸、鲜卑稍更强盛，亦因汉末之乱，中国多事，不遑外讨，故得擅南之地，寇暴城邑，杀略人民，北边仍受其困。
However, the Wumaran and Xianbei gradually grew strong again. Because of the great confusion at the end of the Han Dynasty, and since the country was chaotic, there was no time to讨伐 foreign invaders, so they actually invaded and occupied the land south of the desert, seized cities, burned and killed residents, and the north was also plagued.