In order to steady socity

the feudal ruler controlled the construction that the family and marriage of home village in Chinese traditional society. In the aspect of organization

the government applied the patriarch system in pre-Qin period and applied the family of power and influence in Weijin period. After Tang and Song dynasties

the patriarch system developed in two ways: first

the feudal ruler advocated big clan and ordered the head of the family to manage the home village for the area safety; second

the feudal ruler advocated to building ancestral hall and buying the family field and writing family tree. In the theory aspect

《Lun yu》 advocated the filial piety firstly. 《Da xue》 advocated the theory of the family harmony and steady country. After the Confucian scholar in Song Dynasty and ruler advocation

the clan power and political power got close together. From the view of class struggle to speaking

all of those formed the close feudal rule system. But from the view of steady significance

the clan system had really foundation to keep society steady.