1April 23, 945 to1June 23,1,the Seventh National Congress of the Communist Party of China (CPC) was successfully held in Yan 'an, which was a historic meeting of great significance in the history of China's * * * production party and China's revolution. One of the important contributions of the Seventh National Congress of the Communist Party of China (CPC) is to clearly establish Mao Zedong Thought as the guiding ideology of the whole party for the first time, and solemnly write it into party constitution. It marks the first historic leap in the process of Marxism in China, and also marks the unprecedented unity, unity and maturity of China's * * * production party in politics, ideology and organization.