On this day, 87 years ago, February 17, 1938 (January 18, 1938, the lunar calendar), Zhu De, Yan Xishan and Wei Lihuang jointly formulated a combat plan. Zhu De went to Linfen On February 17, 1938, Zhu De went to Tumen, Linfen to meet with Yan Xishan and Wei Lihuang to jointly formulate a combat plan for Chiang Kai-shek's order to counterattack Taiyuan in the First and Second World War Zones. The combat plan decided to form the East Route Army as a right-wing group, with Zhu De as commander-in-chief and Peng Dehuai as deputy, commanding the 115th Division, the 129th Division of the Eighth Route Army, and the 95th Division of the Kuomintang to attack the front lines of Yuci and Niangziguan; The South Route Army is the Central Group, composed of the 3rd, 14th, and 15th Armies of the Kuomintang, and attacks on the front lines of Pingyao and Jiexiu; the West Route Army is the left-wing group, composed of the 35th Army of the Kuomintang, the 71st Division, and the 120th Division of the Eighth Route Army, attacking the front lines of Wenshui, Jiaocheng, and Yangqu. During the meeting, Zhu De had long talks with Wei Lihuang many times and encouraged Yan Xishan to persist in the war of resistance. He proposed: "Once the old army has collapsed, we can actively organize a new army."