In 1938, Dimitrov, General Secretary of the Executive Committee of the Communist International, met with Wang Jiaxiang and Ren Bishi, stating that Mao Zedong should be supported as the leader of the Chinese Communist Party. After returning to China the same year, Wang Jiaxiang relayed this message around the time of the Sixth Plenary Session of the Sixth Central Committee.
In 1938, after the outbreak of the War of Resistance Against Japan, Qin Bangli was ordered to relocate to Hong Kong to open a small business called Lianhe Hang. On the surface, it traded in local specialties, but in reality, it was used to manage anti-Japanese donations, procure medical supplies and equipment, and maintain the intelligence channels of the Chinese Communist Party (CCP) in Hong Kong.
When Stalin compiled the textbook Materialist Dialectics, he deleted the dialectical principle of "negation of the negation," and Mao Zedong subsequently followed this treatment when compiling the definitive version.