1946年3月12日,苏军由沈阳撤出,当时任西满军区司令员的黄克诚立即把活动在彰武地区的新四军第3师第10旅调整到四平附近待命。3月14日,苏军一撤出四平,10旅即乘机拿下四平,俘虏数千名伪军。不久,国民党军队开始自沈阳北进,在开原一度受阻,但很快兵分三路攻打四平。林彪此时征求黄克诚意见,黄克诚建议择敌三路中较弱的一路,在西面打敌左翼。林彪决定集中相对优 On March 12, 1946, Soviet troops were withdrawn from Shenyang. At that time, Huang Kecheng, commander of the West Manchurian Military Region, immediately adjusted the 10th Brigade of the 3rd Division of the New Fourth Army in the area of ​​Zhangwu to the vicinity of Siping for stand-by. March 14, the Soviet Union withdrew from Siping, 10 Brigade took the opportunity to take Siping, captured thousands of puppet troops. Before long, the Kuomintang troops started their northward advance from Shenyang and was temporarily blocked in opening the capital. However, they quickly attacked Siping in three separate ways. At this time, Lin Biao solicited opinions from Huang Kecheng. Huang Kecheng suggested that we should choose the weaker one in the third road and fight the left in the west. Lin Biao decided to focus relatively good