What does the explanation of the theory of patriarchal era emphasize in The Origin of Gender System?

The explanation of the patriarchal era theory in The Origin of Social Gender System emphasizes the theory of advantage accumulation. The fundamental reason why the patriarchal clan system replaced the wooden spring system is the development of social productive forces and the consequent changes in the economic status of men and women. During this period, men's labor, including hunting and fishing, turned to agriculture and animal husbandry, occupying the original economic field of women and becoming the undertaker of the clan's main economic activities. Due to the change of economic status, patriarchy gradually replaced matriarchal system.