Chinese socialist revolution before Mao's leadership is pretty legit. Chen Duxiu, Li Dazhao, are all real socialists, they truely cares about the worker and envisions a better future for China.

So no revolution at all? 95% of the critical mass and anything that can be called a large scale revolution (with organizational successes of the masses) happened in China in the 30s and had little to do with Chen Duxiu and Li Dazhao previous work ,no matter how admirable. The CPC almost died and was built back up multiple times by the time Mao succeeded and Mao was vital in that. You cant get more legit than revolution under Mao. Under probably the worst odds and situation any communist party and revolution had to face they endured, made correct and miraculous choices and political and military manuvers at every turn and won, uplifting and liberating hundreds of millions of peasants and women. No Mao, no successfull revolution in China and no emancipation of the masses. Good luck doing the long march and outmanuvering the KMT from the countryside by amassing immense support with Chen Duxiu's ideas about the peasantry.

Chen Duxiu, Li Dazhao may have envisioned a better socialist future for China but they were and would have been unable to make it happen. They lacked both the military genius, the correct analysis on the peasantry or the rhetoric and vision of mass politics that Mao had that allowed the CPC to pull through against all odds and win