The biggest traitor: Wang Jingwei, who took refuge in the Japanese, formed a puppet national government and puppet troops, besieged the anti-Japanese military and civilians (including the Kuomintang and the * * * production party), and issued counterfeit legal tender, which led to the economic collapse of the occupied areas; "transfer" the minerals in the occupied area to the Japanese, so that the Japanese can have a steady stream of minerals; Hundreds of thousands of Japanese were recruited to China as "employees", resulting in tens of thousands of Japanese "losing" overseas.
Other famous traitors: Chen Gongbo, Zhou Fohai, Li Shiqun, Yin Rugeng, Zhou Zuoren and Ding Mocun.
In addition, the puppet Manchukuo emperor Puyi was also a traitor.