"... persistence in practice is the only criterion for testing truth, that is, persistence in Marxism and dialectical materialism ..."1978 May 1 1 After that, Guangming Daily published a special commentator's article "Practice is the only criterion for testing truth", which triggered a big discussion on the criterion of truth.

Selected Works of Mao Zedong is an important carrier of Mao Zedong Thought, and Selected Works of Mao Zedong is a concentrated exhibition of Mao Zedong Thought and one of the most influential books in China in the 20th century. After the founding of People's Republic of China (PRC), People's Publishing House published two editions of Selected Works of Mao Zedong. Selected Works of Mao Zedong was published in large quantities before the founding of People's Republic of China (PRC). Jinchaji Daily was founded in Handan from 65438 to 0944, and published the first edition of Selected Works of Mao Zedong. Selected Works of Mao Zedong, published after the founding of People's Republic of China (PRC), is the main work of Comrade Mao Zedong during the new-democratic revolution. The first edition of Selected Works of Mao Zedong consists of one to four volumes, which were published in the early 1950s and 1960s respectively. 1 991July1day, the second edition of Selected Works of Mao Zedong was officially published. Comrade Deng Xiaoping wrote the title of the new edition of Selected Works of Mao Zedong.