S1·E21 – The establishment of the work-study mutual aid society but the problems continue to weak countries without diplomatic petition was returned

Yu Hewei

Chen Duxiu

Zhang Tong

Li Dazhao

Zhang Wanyi

Chen Yannian

Ma Shaohua

Cai Yuanpei

Cao Lei

Lu Xun

Bi Yanjun

Gu Hongming

Hou Jingjian

Mao Zedong

Zheng Hao

Dong Biwu

Xia Dejun

Zhou Enlai

Lu Yi

Zhou Zuoren