Chanyu" regime originated from the Huns,but some changes had taken place in terms of structure and function.It is actually the result of culture acculturation of the non Han nationalities and Han nationality in Wei,Jin, Southern and Northern dynasties.It is also one of the signs of culture change during this period.
The relationship between law and edict changes with the change of time, and after Shenzong's legal reform, imperial order takes priority over law, and their relationship to a certain extent is that of the old law to the new law.
With the establishment of the private land ownership, great changes took place in the rural society of the Song Dynasty. Therefore, a series of traits came into being which were most different from those of the previous society, including the weakening of consanguinity, the disintegration of the traditional clannish society, the change of production relations, the development of ethics, and the transformation of governmental functions.
Secondly through probing into the family structure and relationship among family members, the development of the kindred organization and the social function, and the thrive of folk association and the impact of them this dissertation opens out that there were violent movements and obvious changes in the traditional social relationship with the core of social stratification during the period.
Probing into the influence of Cai Jing on the political situation over the Reign of Hui-tsung and the relations between Cai Jing and the monarch with his subjects, this thesis tries to observe the changes of the political situation so as to reveal the lesson why the Northern Song Dynasty was destroyed.