The Japanese troops stationed in Laiyuan immediately turned to the Japanese troops stationed in Zhangjiakou for help after being attacked by the troops of the Jinchaji Military Region. On September 23, more than 3,000 Japanese troops took a bus, and under the cover of 20 tanks and 4 planes, they set off from Zhangjiakou and went south to reinforce. On 24th, Jian Peijun and Lieutenant General, the second independent HunChengLv brigade of the Japanese army, came from Yuxian and went south to reinforce. Due to the destruction of roads by anti-Japanese soldiers and civilians and constant harassment by anti-Japanese armed forces along the way, the Japanese army moved slowly. From Yuxian to Laiyuan, 80 kilometers away, the Japanese motorcade struggled for 5 days, with an average of only 16 kilometers per day. In the war, once the people are mobilized, the Japanese army will be unable to move, and the power of the people's war is endless.

At noon on the 28th, more than 3,000 Japanese troops arrived in Laiyuan County.