85 years ago today, on June 13, 1940 (May 8, 1940 in the lunar calendar), the Kuomintang banned Mao Zedong's "On New Democracy". The work "On New Democracy" is a great achievement of combining the universal truth of Marxism-Leninism with the specific practice of the Chinese revolution. It scientifically summarizes the experience and lessons of the Chinese revolution after the Opium War, especially after the founding of the Communist Party. It profoundly discusses the basic laws of the development of the Chinese democratic revolution. For the first time, it clearly put forward the complete theory of New Democracy, depicted the blueprint of the new democratic society, realized a leap in the process of Marxism's sinicization, enriched and developed Marxist-Leninist theories on national and colonial revolutions, and marked the maturity of Mao Zedong Thought. On June 13, 1940, the Kuomintang authorities were very afraid of Mao Zedong's "New Democracy", so they issued a ban on investigation in the name of the Kuomintang Book and Magazine Review Committee. The telegram is as follows: Chongqing Press Inspection Bureau Public Review: The article "New Democracy" published by a certain party violates national policy and should be banned; the content of this article is extremely absurd. When a certain party proposes such absurd terms when the situation of the Anti-Japanese War is more favorable to me, it is also expected that it will motivate the newspapers and magazines within the party and sympathetic to the party to make widespread propaganda. Please pay attention when reviewing the original manuscript by the review organs at all levels. All words that publicize such terms should be detained or deleted and reissued. Please check it with special telegrams. Please pay attention to handling it.