南北朝后期,南、北对峙因北魏的分裂又演变成东、西魏和梁的三方抗衡,相对于魏、蜀、吴三国而言,南北朝后期出现的这种南、北三方对立又被称为后三国鼎立1。在后三国鼎立过程中,侯景之乱的发生又使之出现一个改变,即由原来东、西魏和梁的对立最后演变成了北齐、西魏(北周)和陈的对立。在这种变化和转型过程中,不仅南北政局发生了改变,南北社会政权内部结构也随之有不少变化,其中最为重要的一点就是这时期许多南方士人被迫北迁,由此在东魏(北齐)和西魏(北周)政权下各自形成一个北迁南方士人群体。面对这些北迁南方士人,北朝政权尽管有东、西之别,也有某些具体处置措施的不同,但在对待他们主要策略和态度上却表现出极大的相同笔者下 In the late Northern and Southern Dynasties, the confrontation between South and North evolved into the East due to the division of the Northern Wei Dynasty and the Western Wei and Liang contend with each other. Compared with Wei, Shu and Wu, this tripartite confrontation between South and North appeared in the late Northern and Southern Dynasties, The Three Kingdoms 1. In the process of the latter three kingdoms, Hou Jing’s rebellion led to a change, that is, the original antagonism between East Wei and Western Wei and Liang finally evolved into the confrontation between Northern Qi and Western Wei Dynasty (Northern Zhou Dynasty) and Chen. In this process of change and transformation, not only the political situation in the north and the south has changed, but also the internal structure of the social regime in the north and south has changed a lot. The most important point is that many southern scholars were forced to move north during this period, (Northern Qi Dynasty) and the Western Wei Dynasty (Northern Zhou Dynasty), each formed a group of migrants to the north. In the face of these northern emigrants, the regime in the north, despite differences between the east and the west, also had some specific measures for handling them. However, they did so under the same treatment of their main tactics and attitudes