Efforts: put forward the three slogans of "peace, democracy and unity"; Participate in Chongqing negotiations and sign the "Double Tenth Agreement"; Attend the meeting of old CPPCC. Reasons: changes in the primary and secondary status of ethnic contradictions and class contradictions; The Kuomintang adheres to the one-party dictatorship system; The American policy of supporting Chiang Kai-shek against * * * and the Soviet policy of supporting Chiang Kai-shek against * * *. Goal: carry the revolution to the end and never give up the opportunity for peace. Results: The fraud of the Kuomintang's fake peace talks was thoroughly exposed. Overthrew the National Government and established a new China.

The key is to define three stages. The stage of peace talks refers to the period of Chongqing negotiation after the end of the Anti-Japanese War, the stage of rupture refers to the outbreak of civil war, and the stage of crossing the river refers to the Beiping negotiations and the battle of crossing the river.