The horn of the Hundred Regiments War sounded. This general attack was first launched on Zheng Tai Railway. On August 8th, Zhu De, Peng and Zuo Quan issued a campaign action order, which further clarified the deployment and tasks of the campaign. Among them, it required: "Nie Group's main force is about 10 regiment, and the section from Pingding (excluding Pingding County) to East Shijiazhuang is eliminated, with the focus on Niangziguan and Pingding sections. For Beining Line, Jinpu Line to the north of Dezhou, Deshi Road, Cangshi Road and Cangbao Road, especially Pinghan Line from the north of Yuanshi County to Lugouqiao Bridge, sufficient troops should be dispatched at the same time to attack the enemy who may reinforce Zhengtai Line, and the camera will recover some strongholds. Monitor the enemies in the west and north with appropriate forces. In addition, with strong strength, it actively moved to the enemy strongholds in the north and south of Jixian County, and the camera captured some strongholds. " "Nie Tuan" refers to the troops of the Shanxi-Chahar-Hebei Military Region under the command of Nie Rongzhen, commander and political commissar. It is an anti-Japanese force with more than 3,000 officers and men, including the Eighth Route Army 165438 Division Independent Regiment, Cavalry Battalion and Division Teaching Team, as the backbone, which has developed and grown behind enemy lines in the Shanxi-Chahar-Hebei base area. The main task of "Nie Tuan" is to attack the eastern section of the road. The main goal of the battle is that the Japanese army will be incorporated into most of the 8 th Brigade and part of the 4 th Brigade independently. This Niangziguan natural barrier with strong Japanese defense and Jinglong Coal Mine, an important Japanese fuel base. These strongholds are closely guarded by the Japanese army.

Commander Nie immediately dispatched 18 Infantry Regiment,/kloc-0 Cavalry Regiment, 2 cavalry battalions, 3 battery companies,/kloc-0 engineering company and 5 guerrilla detachments to form a left column, a right column, a central column, a containment force and a general reserve to attack the section from Yangquan to Shijia on Zheng Tai Road. At the same time, the railway sections from Yuanshi County to Lugouqiao Section of Pinghan Railway have also been deployed accordingly. At that time, the Japanese garrison along Zheng Tai Road was mainly composed of the Fourth Brigade, with its headquarters in Yangquan. Independent mixing is a part of the 8 th brigade, and the brigade headquarters is located in Shijiazhuang; Independent mixed for the ninth brigade, the brigade headquarters is located in Taiyuan. The Japanese army built strong fortifications near the towns, stations, bridges and tunnels along the Zhengzhou-Taiyuan Railway, and also set up peripheral strongholds in the area of10 ~15km on both sides of the railway. The fortress is connected by traffic trenches, surrounded by barbed wire and obstacles, and is equipped with a strict fire net. When they settled in both sides of Shijiazhuang, there were more than 40 strongholds. In many areas, this attack will be a tough battle. According to these circumstances, Nie decided to capture the enemy's strongholds first and then break through the road.

Before the war, Nie Rongzhen asked the participating troops to seize the time to carry out targeted training to tackle key problems and break the city, pay special attention to reconnaissance of the enemy, prepare blasting equipment and choose a good attack road. After all the preparations were basically ready, Nie led a capable command team to the front. Nie's command post is located in a small mountain village called Honghecao near Jingxing. Jingxing has three mining areas: general mine, new mine and Yanghe mine. It is a coal mine with abundant reserves in North China. The Japanese army regarded this coal mine as its lifeline and invested considerable manpower and material resources. Nie Rongzhen is determined to destroy this coal mine, and plans to set up a command post near Jingxing. On August 20th, the night sky was dark and rainy. Suddenly, red flares rose on both sides of the Zheng Tai Railway. In an instant, with a thunderous explosion, all kinds of commandos descended the mountain like tigers and pounced on enemy strongholds and stations. The Eighth Route Army launched a surprise attack on the entire Zhengzhou-Taiyuan railway. The Japanese knew nothing in advance, and the defenders in all positions were unprepared. At that time, the whole line was passive. At the beginning of the campaign, the Japanese troops guarding the eastern section of Zheng Tai Road were merged into the 4th Brigade Command independently. "It was impossible to understand all aspects, and it took two or three days to find out gradually.". Under Nie's command, the troops of the Shanxi-Chahar-Hebei Military Region attacked in three ways and played a three-way victory song. Among them, the right column that raided Niangziguan Road was commanded by Guo, commander of the 2nd Army Division of the Shanxi-Chahar-Hebei Military Region, and political commissar of the 4th Army Division. Under the jurisdiction of 19 and 5 regiments, it is mainly responsible for cutting off the traffic line from Niangziguan to Luanhua of Zheng Tai Railway, with emphasis on the Japanese stronghold in Niangziguan.