When did you start to crack down on feudal superstition? What year will it end?

Hello, I don't know the specific time. It seems to have started gradually after the founding of the People's Republic of China, but it entered a new climax during the Cultural Revolution. After all, does materialism persist in atheism? In the 1980s, a series of TV dramas of The Journey to the West's "The List of Gods" were put on the screen, and monsters were uprooted on the TV screen.