"The Four Olds" (sijiu) – old ideas, old habits, old customs, old cultures – were discouraged and were replaced by Communist ideology, particularly during the Cultural Revolution.
"Empat Lama" (s: 四旧, t: 四舊, e sìjiù)—gagasan lama, perilaku lama, kebiasaan lama, budaya lama—dihapuskan dan diganti dengan ideologi komunisme, terutama selama Revolusi Kebudayaan.