Advancing into Taihang Mountain is a wise decision made by Mao Zedong after Nanchang Uprising. After the Nanchang Uprising and the Autumn Harvest Uprising, Mao Zedong's strategic plan was to attack big cities. There are too many people in big cities, and there are many casualties. At that time, the strength of the Movable Property Party was only 50,000 to 60,000 people, which had little effect. It only occupied a few cities. Later, Mao Zedong put forward the idea of encircling the city from the countryside, and then advanced into Taihang Mountain, where he integrated the team and made the team loyal to the Party. Later, the team led by Zhu De joined forces in Taihang Mountain, and those who named the Party later called the Red Army Zhu Maojun for a period of time.