The film mainly tells the world-famous "three major battles" commanded by Chairman Mao and the CPC Central Committee in Xibaipo Village, Hebei Province at the end of 1948. On New Year's Eve, Xibaipo was liberated. Our army has continuously won in the "three major battles" and the Kuomintang army has been repeatedly defeated. Chiang Kai-shek was forced to introduce Li Zongren as acting president. In order to protect the ancient city of Beiping, Chairman Mao and the CPC Central Committee have done the work of Kuomintang general Fu many times, hoping that he would lead an uprising and peacefully liberate Beiping. Chiang Kai-shek announced his resignation and left Nanjing sadly. After our party and government organs moved to Beiping, Chiang Kai-shek became even more uneasy. Chiang Kai-shek, who was awakened by a nightmare, was told that a military parade was being held in Beiping. Then Zhou Enlai and Zhang Zhizhong started national peace talks, with little progress. Chairman Mao issued the order of "March to the whole country", which started the battle of crossing the river, and millions of heroes crossed the natural barrier of the Yangtze River. After the liberation of Nanjing, the People's Liberation Army occupied the presidential palace. Deng Xiaoping and Chen Yi entered Nanjing, and formulated the code for entering the city. When Chiang Kai-shek bid farewell to his mother's grave for the last time, the whole family boarded the Taikang and quietly left the mainland. 10 year 10 month 1 3 pm, Chairman Mao solemnly declared to the world: "The people of China and the Central People's Government have been established!" People cheered and the whole square boiled.