The production process as a social foundation is realistic and appears in complex forms, including the entire process of production, distribution, exchange and consumption. The characteristics of the open society are determined by the main production relations, but the main production relations As the center, there are also other subsidiary production relations. therefore:. ['Only when there is a purely productive relationship, can a social era have distinctive characteristics.', 'The economic foundation is comprehensive and is the sum of all production relations in a society.', 'Superstructure determines the production relations of a society.', 'The main production relations in a social era determine all the characteristics of the society.']