破四旧
The term "Four Olds" first appeared on June 1, 1966, in Chen Boda's "People's Daily" editorial, "Sweep Away All Monsters and Demons", where the Old Things were described as anti-proletarian, "fostered by the exploiting classes, [and to] have poisoned the minds of the people for thousands of years". However, which customs, cultures, habits, and ideas specifically constituted the "Four Olds" were never clearly defined.