Summary: (1) During the national revolution, after the "227" tragedy, the China * * * production party realized that it was not enough to rely solely on the strength of the working class, and only by uniting all forces that could be United could the China revolution move towards victory. Therefore, China * * * production party decided to cooperate with China Kuomintang led by Sun Yat-sen to establish a revolutionary United front. At the same time, Sun Yat-sen also realized from the failure of the second movement to protect the law that only by reorganizing the Kuomintang can the revolution have hope of success. Therefore, he accepted China's help. After the "First Congress" of the Kuomintang, the two parties achieved the first cooperation, which effectively promoted the rapid development of the workers and peasants movement throughout the country and the victorious March of the Northern Expedition. After the death of Sun Yat-sen, Chiang Kai-shek and Wang Ching-wei abandoned Sun Yat-sen's three major policies, attacked and excluded party member, and created a \ "April 12th \" \ "July 15th \" counter-revolutionary coup, which led to the failure of the Great Revolution and the breakdown of cooperation between countries.

(2) During the confrontation of state power in 10, the two parties were in a state of complete opposition. This is manifested in: China * * * learned the lessons from the failure of the Great Revolution and decided to launch an armed uprising against the reactionary rule of the Kuomintang. He successively launched the Nanchang Uprising, the Autumn Harvest Uprising and the Guangzhou Uprising, opened up rural revolutionary base areas, and implemented the "armed separation of workers and peasants". The national government headed by Chiang Kai-shek suppressed the uprising and "surrounded" the revolutionary base areas; After the September 18th Incident, he still devoted himself to the fourth and fifth "encirclement and suppression" Long March to encircle the Red Army. With the "September 18th Incident", "November 28th Incident" and the North China Incident launched by Japan, the ethnic contradiction between China and Japan gradually rose to be the main contradiction, and patriotic generals in the Kuomintang gradually tended to "unite with foreign countries" advocated by China. The peaceful settlement of the Xi 'an incident marked the transition from confrontation to cooperation between the Kuomintang and the Communist Party. After the outbreak of the all-round anti-Japanese war, the confrontation between the two parties finally ended, and * * * took to the anti-Japanese battlefield together.

(3) During the eight-year Anti-Japanese War, the two parties were basically in a state of cooperation. Although the Kuomintang reactionaries constantly created anti-* friction after the Anti-Japanese War entered the stalemate stage, the Japanese policy of exterminating China remained unchanged. China adopted a flexible struggle strategy and waged a rational, favorable and restrained struggle against the Kuomintang. The cooperative relationship between the two countries was maintained until the final victory of the Anti-Japanese War.

(4) After War of Resistance against Japanese Aggression's victory, the United States and Chiang Kai-shek colluded to launch a civil war against the people, and the relationship between the two sides broke down again, moving from cooperation to confrontation. After three years of civil war, with the support of the people, the Chinese production party finally defeated the Kuomintang reactionaries and won a great victory in the people's liberation war.