![Xin Deyong | Mingren printed the southern and northern prison books[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)
On October 31, 1968, Mao Zedong said in his speech at the closing ceremony of the Twelfth Plenary Session of the Eighth Central Committee of the Communist Party of China: "We must investigate and study, we must pay attention to evidence, and we must not engage in black labels and jets...
10-27
