3世纪后期慕容鲜卑兴起并占领辽东后,昌黎成为其政治活动的中心,大批被其征服的鲜卑各部落也被迁徙到昌黎定居。在3世纪后期至4世纪中后期昌黎的长期定居生活中,有的鲜卑部落通过改姓被慕容鲜卑纳入到其统治集团之中,进而与其结为一体,成为其所建各政权的重要组成部分。在北魏统一北方的军事政治压力下,昌黎鲜卑胡姓与慕容氏的联合体迅速崩溃,纷纷投奔北魏,最终融入到北魏统治集团。 After the rise of the Murong Xianbei and occupation of Liaodong in the latter part of the third century, Changli became the center of his political activities. A large number of Xianbei tribes conquered by him were also migrated to Changli to settle. In the long-term colonial life of Changli from the late third century to the mid-to the fourth century, some Xianbei tribes were ensnared in their ruling group by changing their surnames and thus became part of the regime that they built. Under the military and political pressure of the unified North in the Northern Wei Dynasty, the coalition of Changli Xianbei and Murong quickly collapsed, defected to the Northern Wei Dynasty and eventually merged with the Northern Wei dynasty.