On this day, 53 years ago, on April 24, 1972 (March 11, 1972, the People's Daily published an editorial "Learn from the past and avoid the future, cure the disease and save the patient." On April 24, 1972, the People's Daily published an editorial pointing out that 30 years ago, during the Yan 'an Rectification Movement, Chairman Mao summarized the historical experience of our intra-party struggle and put forward a famous Marxist policy: "Learn from the past to avoid the future, and cure the disease and save people." Chairman Mao repeatedly emphasized: "We must believe that more than 90% of cadres are good or relatively good. Most people who make mistakes can be corrected."" The scope of attack should be small and the scope of education should be broad." It is necessary to strictly distinguish between two types of contradictions of different nature: contradictions between ourselves and ourselves and contradictions among the people. Except for a very small number of class enemies and incorrigible elements who have mixed into the revolutionary ranks, we must follow the formula of "unity-criticism-unity" and adopt the education-oriented policy for all comrades who make mistakes, whether veteran cadres or new cadres, comrades within and outside the party. The first thing to do is to seriously criticize comrades who make mistakes and distinguish right from wrong. The purpose is to adhere to the principles of Marxism-Leninism and Chairman Mao's proletarian revolutionary line. Second, we must proceed from the desire for unity, strive to help them correct their mistakes and welcome progress. We must engage in "all corners of the world" and not engage in mountainism or sectarianism. We must advocate taking the overall situation into account. The handling of comrades who make mistakes must be based on the interests of the whole party, and the interests of the party are above individual and local interests. We must care for them and educate them. As long as they recognize their mistakes and are determined to correct them, we must trust them and play their role. "Taking a cautious attitude towards people's handling of problems, not being vague and perfunctory, nor harming comrades, is one of the signs of our party's prosperity."