This article points out that"Han’er"only referred to the Chinese and sinolized people living in the Central Plains during the Northern Wei and Northern Qi Dynasties,was not a name for all Chinese who are now considered to belong to one ethnic or cultural group.In the middle ages of China,culture,political identity and blood,separately or combined,were all important to dividing ethnic categories,and the cultural standard should not be overemphasized.Political identity,instead of cultural factors,became the fundamental standard in determining the Han’er identity in the Eastern Wei and Northern Qi Dynasties,when the Six Garrison Group consolidated its privileged status in distributing the political resources by enhancing its ethnic border through the discrimination of Han’er.Meanwhile,after having molded a new"countrymen group"by bestowing the Xianbei surnames to Chinese,the Six Garrison Group in Western Wei and Northern Zhou constructed its military,political and social basis of the ruling.In fact,this policy functioned in the same way as discrimination policy of Northern Qi did.The privilege border and the ethnic border were also the border of Sinolization.As long as the privileged groups taking the ethnic identity as the border of their privileges existed,their Sinolization would never be completed,and the ethnic border would possibly be further strengthened by the"Xianbeization"policies.The ethnic border and Sinolization border would finally disappear only if the previous border of privileges had been destroyed.