Imperial Authority Day-by-day Expansion——General character of the Northern Wei and the Tang Dynasty' Several the Official Arrangement of the Important Family

The Northern Sui and Tang Dynasty being in the Middle Time of the history,it is the transition phase by the powerful family politics to the bureaucrat politics in our country ancient history,and the outstanding feature of the transition Process,namely this length other disappears between the imperial authority and the hereditary scholar class' privilege.From the Northern Wei Dynasty Emperor Xiaowen to Tang Taizong,Tang Gaozong,Tang Xuanzong,four the Official Arrangement of the Important Family is the precisely manifestation of this transformation in political aspect.Imperial authority to hereditary scholar class' privilege' intervention,is not only among them the consistent general character,and presents the tendency which day by day expands.