Class struggle refers to the opposition and struggle between opposing classes. It is the manifestation of conflict between classes with opposing fundamental interests and is the basic means of resolving conflicts between opposing classes.
The essence of class conflict is the opposition between the economic status and material interests of different classes. All class struggles occur on the basis of opposing and conflicting material interests, that is, economic interests, and are ultimately centered around material interests.
In a class society, the class struggle first takes place between the two basic classes in each social form, such as the struggle between the peasantry and the landlord class in feudal society, and the struggle between the proletariat and the bourgeoisie in capitalist society.