Political power and ideology belong to the superstructure and are determined by the economic base. But this decision is not a simple nonlinear decision. When a new economic base replaces the old one and a new superstructure is required to replace the old one, all parts of the superstructure are not changed or eliminated at the same time with the change or elimination of the economic base, but changed or eliminated sooner or later. This is determined by the different characteristics and relative independence of each component of the superstructure.

The relationship between state power, political and legal system and economic base is the most direct, and the relative independence is relatively small. It is directly determined by and serves the economic base. Therefore, the change of superstructure is always the change of state power, politics and legal system first. Other parts of the old superstructure, such as morality, literature and art, religion and philosophy, are far from the economic base and relatively independent. They were directly influenced by political decisions, so they changed slowly and then disappeared. Philosophy, in particular, is farthest from the economic base and has the greatest relative independence. It is influenced not only by economic and political decisions, but also by moral, literary and religious views, so it changes the slowest and disappears the latest. This change in the superstructure determines the long-term and complexity of class struggle in the ideological field.