"[The] Yan’an [Soviet] is [a] synonym of crushing dissent, real or invented, by torturing and killing. As [Communist Party member] Cai Qi reminded the audience at the April 28 [2024] symposium, the Yan’an Rectification Campaign was plotted by Mao, but its main organizer was Ren Bishi."
January 1, 1970
https://en.wikiquote.org/wiki/Chinese_Communist_Party