On this day, 55 years ago, on November 16, 1970 (October 18, 1970 in the lunar calendar), the Central Committee of the Communist Party of China launched a rectification campaign to criticize Chen. On November 16, 1970, the Central Committee of the Communist Party of China issued the "Instructions on Communicating Chen Boda's Anti-Party Issues." The "Instructions" pointed out: "At the Second Plenary Session of the Ninth Central Committee of the Communist Party of China, Chen Boda adopted vicious methods of surprise attack, fan the flames, create rumors, and deceive comrades to carry out conspiracy activities to split the Party. "Under the personal leadership of Chairman Mao, the plenary session exposed Chen Boda's serious crimes of anti-Party, anti-Ninth Congress line, anti-Marxism, Leninism, and Mao Zedong Thought, and exposed his false Marxism, careerist, and conspirator." "In order to educate cadres and let more comrades understand this issue, the Central Committee decided to print Chairman Mao's" My Some Opinions "article to you. Please immediately read it and convey it to members of the Party's district-level core group, members of the army division-level party committee, and party members in the same group. Responsible cadres and personnel of various central task forces. The content conveyed is mainly based on Chairman Mao's article "My Opinion". In this document, Chairman Mao exposed the bourgeois idealism that Chen Boda opposed, refuted his rumors and sophistry, further clarified the basic views of Marxism-Leninism epistemology, and called on all comrades in the party to stand on the standpoint of Marxism-Leninism, draw a clear line with Chen Boda, strive to learn Marxism-Leninism, and not be deceived by those who claim to understand Marx. "Chen Boda has a complicated history and is a suspicious person. The central government is reviewing his issue. When communicating, each unit must call on comrades who understand his situation and problems to report and expose them." After the "Directive" was issued, the whole party launched a "criticism and rectification" campaign.