中国共产党的成立以1921年党的第一次全国代表大会的召开为标志。关于党生日的证明——中共一大档案,曾经历了“失而复得”的过程。中共一大召开后,没过几年,党中央保存的一大档案便遗失了。1930年2月1日,李立三在《党史报告》中曾明确地说:“党的第一次大会文件,现在是找 The founding of the Chinese Communist Party was marked by the convening of the party’s first national congress in 1921. Proof of the party’s birthday - a big file of the CCP, has undergone a process of ”regaining itself“. A few years after the first communist party convened, a large file preserved by the party central committee has been lost. On February 1, 1930, Li Lisan made it clear in the ”Party History Report:" The document of the first congress of the party is now looking for