The social organization in primitive settlements had been consanguineous in nature since the very beginning. It became gradually complicated in the long historical development

forming hierarchies of clans

families

and households. All residents lived in the community with the same blood

and there was no obvious polarization between the rich and the poor. Household was the basic unit for living and production in the settlement

and its members were mainly second-generation blood relatives. By the time of Yangshao culture and Dawenkou culture

the center of the consanguineous organization system in settlements moved down. Primitive families with the functions of production

distribution and living turned up gradually between clans and households. On this basis

paternal households and families emerged

which played a vital role in the origin and development of ancient civilization in China. The consanguineous organization form

marital status and family and household structure in primitive settlements marked the initiation of civilization and had an important impact on the development of later social forms and civilizations.