Introduction to the second part: The second exhibition hall mainly displays the "Southern Anhui Incident" and the New Fourth Army's reconstruction of the military headquarters in Yancheng, the unified reorganization of the New Fourth Army and the Eighth Route Army into seven divisions of the New Fourth Army in Central China, and the establishment of the Central China Bureau of the Central Committee of the Communist Party of China to strengthen the leadership and construction of the East China Party. , historical materials for defending and building the anti-Japanese base areas in Central China. Especially on January 25, 1941, the military headquarters of the New Fourth Army was rebuilt in Yancheng and the various units were organized, which meant that the construction of the New Fourth Army entered a new stage of healthy development. The third exhibition hall displays historical materials on how the First Division of the New Fourth Army and the Central Jiangsu Anti-Japanese Base Area, the Third Division of the New Fourth Army and the Northern Jiangsu Anti-Japanese Base Area mobilized the masses to carry out counter-mopping up and clearing the countryside, defended the base areas, actively carried out strategic counterattacks, and expanded the liberated areas. and literature.