At that time, Mao Zedong and Dong Biwu were the only founders of the Party who had participated in a major conference in Yan 'an. They recalled that the First University was held in July, but they couldn't remember the exact date of the meeting. Because of the lack of archival materials, it is impossible to verify it at the moment, so July 1 day is determined as the anniversary of the birth of the party.
As the anniversary of the birth of the Party, "July 1st" first appeared in the central document 194 1 June. At that time, the * * * Central Committee issued the "Instructions on the 20th Anniversary of the Birth of China * * * Production Party and the 4th Anniversary of Anti-Japanese War".
The directive says: "July 1st this year is the 20th anniversary of the birth of the Communist Party of China, and July 7th is the fourth anniversary of War of Resistance against Japanese Aggression in China. All anti-Japanese base areas should convene meetings separately, take various measures to hold commemorative meetings, and publish special issues or editions in various publications." This is the first document made in the name of the Central Committee of the Communist Party of China to commemorate July 1st as the anniversary of the Party's birth.
Although the anniversary of the party's birth is not the specific date of the party's first congress, the glorious festival "July 1" has been deeply engraved in the hearts of the whole party and people of all ethnic groups throughout the country. It has become an important festival that people commemorate every year, and it has also become a part of the festival culture in China.