Main contents: [1] The plenary session re-established the Marxist ideological line of seeking truth from facts, summed up the experience and lessons of economic construction since the founding of the People's Republic of China, abandoned the "Left" wrong policy of "focusing on class struggle", made a strategic decision to shift the focus of the party's work to socialist modernization and implement reform and opening up, and also decided to improve the party's democratic centralism and strict party discipline.

3. Significance: It is a great turning point with far-reaching significance in the history of the Party since the founding of the People's Republic of China. It has completed the rectification of the Party's ideological line and political line, marking that China's history has entered a new era of socialist modernization, the Party's basic line thought has begun to take shape, and the Party's second-generation leading collective has initially taken shape.