瞿秋白
Mao Zedong was present at the first congress as one of two delegates from a Hunan communist group. Other attendees included Dong Biwu, Li Hanjun, Li Da, Chen Tanqiu, Liu Renjing, Zhou Fohai, He Shuheng, Deng . Two representatives from the Comintern were also present, one of them being Henk Sneevliet (also known by the single name 'Maring'). Notably absent at this early point were future leaders Li Lisan and Qu Qiubai.