This book mainly introduces the previous national congresses of the Communist Party of China. The main contents include: 1. The party congresses at the beginning of the founding of the party: the party's first national congress, the party's second national congress, the party's third national congress, the party's fourth national congress, the party's third national congress. The Five National Congresses; 2. Party Congresses in the Mao Zedong Era: the Sixth National Congress of the Party, the Sixth Plenary Sessions of the CPC Central Committee, the Seventh National Congress of the Party, the Seventh Plenary Sessions of the CPC Central Committee, the Eighth National Congress of the Party, and the Eighth Plenary Sessions of the CPC Central Committee; 3. Party congresses in the new era: the 11th National Congress of the Party and all previous plenary sessions, the 12th National Congress of the Party, all plenums of the 12th Central Committee of the Communist Party of China, the 13th National Congress of the Party, all plenary sessions of the 13th Central Committee of the Communist Party of China, the 14th National Congress of the Party, and all 14th Plenary Sessions of the 14th Central Committee of the Communist Party of China. The Central Plenary Session, the 15th National Congress of the Communist Party of China, the 15th Central Committee Plenary Sessions of the Communist Party of China, the 16th National Congress of the Communist Party of China, the 16th Central Committee Plenary Sessions of the Communist Party of China, the 17th National Congress of the Communist Party of China, the 17th Central Committee Plenary Sessions of the Communist Party of China, the 18th National Congress of the Communist Party of China and the Central Plenary Sessions.