After the establishment of the Communist Party of China on July 23, 1921, under the brutal rule of the reactionary warlord government, it could only be kept in a state of secrecy, and there was no environment for public activities. During the period of the Great Revolution, the party was busy with the cooperation between the Kuomintang and the Communist Party, carried out the workers' and peasants' movement and supported the Northern Expedition, and had no conditions to commemorate the birth of the party. It was proposed by Comrade Mao Zedong in May 1938 to regard July 1 as the birthday of the Communist Party of China. At that time, Mao Zedong pointed out in the article "On Protracted War": "July 1st this year is the seventeenth anniversary of the founding of the Communist Party of China." This is the first time that the leading comrades of the Central Committee have clearly stated that "July 1" is the anniversary of the birth of the party.