2. Liu Deng's army opened up a base area on the other side, which seriously threatened Nanjing, the ruling center of the Kuomintang, and Wuhan, an important town in Hubei.

3. Created a large revolutionary base area, mobilized and attracted a large number of Kuomintang troops around, and smashed the key attacks of the Kuomintang troops in cooperation with the battlefields in northern Shaanxi and Shandong, which became an important part of the strategic offensive of the People's Liberation Army.

4. At the same time, Mao Zedong's military thought was further enriched by his creative strategic decision, unique offensive style and operational experience.

Extended data:

At the beginning of the war of liberation, there was no effective cooperation and support among the base areas, and they dispersed their operations and concentrated their forces to form local advantages and break the enemy's siege and blockade.

In this way, the base area of soldiers and materials consumption quickly. If you don't fight out, you may be trapped in the base area by the national army like the failure of the fifth anti-encirclement campaign.

Therefore, Chairman Mao proposed that in order to break the current unfavorable situation of interior-line operations, we must go to exterior lines and burn the war to the Kuomintang-controlled areas. Therefore, the troops in East China are divided into internal troops and foreign troops.

The interior corps stayed in the base area, while the exterior corps went to the exterior lines to annihilate the enemy and cooperate with the interior operations in the base area.

Another key measure is that the troops of the Shanxi-Hebei-Shandong-Henan Military Region leave the base area as a whole and go south to Dabie Mountain, threatening Central China and Jiangsu and Zhejiang provinces, and alleviating the pressure on the base area.

References:

Baidu Encyclopedia-Advance into Dabie Mountain