Although there are still more than 330,000 Kuomintang troops in 29 integrated brigades in the northwest battlefield, their combat effectiveness has been greatly weakened and they are on the defensive. According to Chiang Kai-shek's orders, Hu Zongnan, director of the Kuomintang's "appeasement" office in Ann, successively transferred and reorganized the 1st Division, 30th Division, 36th Division and 65th Division from the battlefields in northern Shaanxi and southern Shaanxi to form Pei Changhui Corps, staying in Tongguan and southern Shaanxi in the east, and cooperating with Herry Liu Corps, preparing to open the traffic lines in Longhai and Pinghan to reinforce the battlefield in the Central Plains.
Around the Shensi-Gansu-Ningxia Border Region, only 17 of the 28 brigades of the nine reorganization divisions of Hu Zongnan Group were used. Its main force, Liu Kan, led the adaptation of the 29th Army Headquarters, 27th Division and ninetieth Division, and assembled them in Luochuan and Huangling areas as the Mobile Corps, which was used to aid Yan 'an in the north and Yichuan in the east, or to prevent our army from going south. In Hancheng and Yumenkou, the seventy-two regiments of the twenty-fourth brigade of the seventy-sixth division and the six regiments of Shaanxi Baoan were reorganized to prevent the PLA from crossing the Yellow River to the east, and the twenty-fourth brigade of the seventy-sixth division (under the seventy-two regiments) was reorganized in Yichuan; He Wending led the reorganization of the 17 th Division, the 12 th Brigade, the 48 th Brigade and the 11 th Shaanxi Security Corps to Yan' an to maintain the highway traffic line from Yan' an to Jixian; The rest are stationed in Tongchuan and Sanyuan. Ma Bufang, Qinghai reorganized the 82nd Division in Qingyang, Heshui and Xifeng towns; Ningxia Ma Hongfeng reorganized two other brigades of the 81st Division and stationed in the area west of Anbian; Deng Yulin Baoshan Department was besieged by our local corps.
After the northwest field army attacked Yulin for the second time in the winter of 1947, its main forces gathered in Suide, Mizhi and Ansai to rest and prepare for a strategic attack. The second column assembled for training and consolidation in Quwoqu village, Jinnan, ready to move westward. Commander Peng and the comrades of the Field Army Command repeatedly studied the operational direction of the spring offensive. First, attack Yulin again. At that time, the biggest difficulty of our army was that there was no food and the climate was cold, which was not conducive to tackling key problems. And Deng Baoshan has sent representatives to negotiate with us, afraid that we will attack Yulin again; Second, we went west to Longdong, which was also short of food. We fought against Ma Bufang and Ma Hongkui Group, and Hu Zongnan took the opportunity to concentrate on aiding the Central Plains to the east, which was not good for the overall situation. Only going south is the most appropriate way to make Guanzhong rich in manpower and material resources, which can solve the food problem and threaten Xi 'an, and mobilize Peichanghui Corps for Huiyuan, so as to coordinate the field armies of Liu Bocheng and Deng Xiaoping, the field armies of Chen Yi and Su Yu, and the Xie Chen Corps to run the Central Plains.