In March 1948, the Battle of Yichuan achieved an unprecedented victory, and the battlefield in northern Shaanxi underwent fundamental changes. The central government decided to cross the Yellow River eastward.As the central government was about to leave northern Shaanxi, Chairman Mao and Xi Zhongxun had an in-depth exchange of views, reviewed the history of the Shaanxi-Gansu revolution, and lamented the contribution of the Shaanxi-Gansu revolutionary base areas as "two points and one survival".Subsequently, Chairman Mao led the central government to cross the Yellow River eastward.Shortly after the Battle of Yichuan, Peng Dehuai led the Northwest Field Army to attack Xifu and attack Baoji. During this period, Yan'an was also quickly recovered.Xiye encountered a joint attack by Hu Zongnan and Ma Jiajun in Xifu. The headquarters was almost besieged, and Xiye's main force was forced to break out.