Mao undertook feats of physical endurance with Xiao Zisheng and Cai Hesen, and with other young revolutionaries they formed the Renovation of the People Study Society in April 1918 to debate Chen Duxiu's ideas.
Mao foretog flere fysiske udholdenhedsting sammen med Xiao Zisheng og Cai Hesen, og sammen med andre unge revolutionære dannede de Renovation of the People Study Society i april 1918 for at debatere Chen Duxius ideer.