Liuzhen,literally,Six Military Towns,refers to nonsinicized society in which military towns system is implemented on the basis of northern tribe social organization.Zhencheng 鎮城as the military,political and economic centers of Liuzhen are distributed in scattered spots,and surrounded by many northern tribes.Despotic chieftains,who dominate the social order of Liuzhen,are divided into two groups:one is"good family chieftains"who are core of governing Liuzhen with dominated power in the Northern Wei;the other is"northern tribe chieftains"such as the leaders of Gaoche 高車 tribes who are immigrated into Liuzhen as the conquered and need to assume responsibility of drafting and taxing.Most good family chieftains were born in middle and low classes and become border chieftains whose powers confined in Liuzhen after they migrated there.Although a series of reforms of sinicization like moving the capital to Luoyang 洛陽 may not decrease good family chieftains’ political status in the military towns system,they can not step into the circle of gentry clans through their official ranking and titular honors.For those powerful northern tribe chieftains like Gaoche who were drew by the Northern Wei Dynasty,the reforms of sinicization result into a drastic decline of their political status in the Northern Wei Dynasty and the military towns system.The regional features of tribalization,nonsinicization and militarization of Liuzhen make it no ways to turn military towns to prefectures.On the contrary,these make the towns such regions where the military towns system is further strengthened.For Liuzhen chieftains,home villages are their shelters and regions under their influence as well as ties to unite other chieftains,townee and tribes.