李大钊
After Zhou's release, he and the Awakening Society met with several Beijing organizations and agreed to form a "Reform Federation"; during these activities Zhou became more familiar with Li Dazhao and met Zhang Shenfu, who was the contact between Li in Beijing and Chen Duxiu in Shanghai. Both men were organizing underground Communist cells in cooperation with Grigori Voitinsky, a Comintern agent, but Zhou apparently did not meet Voitinsky at this point.