As a typical Lenin-style political party, what should be concerned most is the CPC's capacity in fighting against and clearing enemies. While this study provides a distinct perspective to observe and recognize CPC's ability of turning hostility into friendship. Japanese prisoners of war (POWs), war criminals and immigrants had been poisoned by ultra-nationalism and militarism for years, and thus were extremely difficult to be reformed. However, under the correct ideological guidance of Mao and the unremitting efforts of the CPC's political officers and cadres, a great number of them acknowledged the CPC's political ideology and joined the CPC's team to compete all around China. Just as the Japanese POWs, war criminals and immigrants after they were transformed joined the Party, the Party united forces from different sectors of China and therefore triumphed in the Chinese revolution.