In our country, the regulatory documents repealing system in which legislature and administrative organization are main repealing bodies, has already established, but it has been unable to realize the theoretical designing effect because of the lack of specialized agency and concrete procedures.

Study on the Salt Transportation and Sales System Changes during the Nanjing National Government Time;

They overlap each other and connect with each other, and thus compose the structure of set-off right.

Since the founding of our People s Republic, a lot of institution has basically changed which has closely related or associated with the land institution, the agricultural tax institution, the purchase and sales system and the household register system has an effect on the land management and exploitation.