At 4:00 a.m. on July 9, 1937, the 29th Army stationed in Beiping ordered Shi Yousan's Jibei Security Force to take over the defense of Wanping in accordance with the agreement. When the troops reached the village of Oi, they were stopped by the Japanese army, killing and wounding several people. The Japanese army was heavily blocked, and the 15-kilometer journey was a full day, and it arrived at Wanping City at 6 p.m., but the Japanese army only allowed them to carry rifles, each with only 30 rounds of ammunition, and the machine guns they carried were required to be transported back to Beiping. At 7 p.m., the security team of less than 200 people entered Wanping. The 29th Army withdrew all the Defenders of Wanping according to the agreement and retreated to the west bank of the Yongding River.
While obstructing the security forces in every way, the Japanese army increased its strength and transferred the 2nd Brigade of the mechanized force from Tongzhou to Fengtai. At 3:40 p.m., the Japanese 2nd Brigade received orders to go to Shagang in the northeast corner of Wanping to take over the defense, in an attempt to take advantage of the opportunity of the Jixing Cultural Regiment and the Jibei Security Corps to change defenses to occupy Wanping City.
After Wanping City was defended by an inferiorly equipped security team, the Japanese army believed that everything was ready, and only waited to enter the city, so they used the excuse of entering the city to comfort the Japanese in the city, but the Chinese refused. Two or three hundred Japanese troops remained in the Shagang area without retreating, and the soldiers were busy setting up telephone lines and laying out gun positions, and the gun ports were facing Wanping City. Next to the railway, there are Japanese troops checking pedestrians at the mouth of the culvert, and the atmosphere of war is pervasive outside Wanping City.
In the early morning of the 10th, the security team entering Wanping City was hungry and just put on the rice bowl, the Japanese army suddenly shot at Wanping and attacked the city, and the security team put down the rice bowl and operated the gun to fight.
In the morning, Qin Dechun, He Jifeng, and others on the Side of Ji Cha held a joint meeting with the Japanese representatives at the suggestion of the Japanese, but the Japanese were insincere, and none of the four deputies could represent the Japanese military department. During the meeting, the Japanese representative was questioned by the Chinese representative and was so unreasonable that he had to leave the table and go outside to make a phone call, and instead of quitting, he returned to the troops.
At this time, the Japanese troops reinforcing Peiping came from Tianjin, Tongzhou, Gubeikou, Shanhaiguan and other places, carrying artillery, tanks and other weapons. Outside the Pass, there are still 11 Japanese traines that have opened into the Guannei one after another, two of which have arrived in Tianjin. At 3 p.m., the Japanese army strengthened its guard at the Lugou Bridge, cut off the Pinglu Highway, cut off the power lines, and a large-scale war was about to begin.
The commander of the 110th Brigade, He Jifeng, was anxious to see the deteriorating situation, and in order to reverse the unfavorable situation, he prepared to attack the Japanese troops in Fengtai that night. With the consent of division commander Feng Zhi'an, it was decided to seize the fighter plane when most of the enemy's troops had not yet arrived, and the enemy was unexpected, and completely annihilated the Japanese army in Fengtai. At this time, the Comparison of Troop Strength in the Peiping Area, the Chinese side temporarily had the advantage, the reinforcements of Baoding and the cavalry regiment of the Northeast Army had opened to Changxindian, the combat effectiveness had greatly increased, and the total annihilation of the Japanese army was assured.
At this time, Zhang Zizhong, commander of the 38th Division, was sitting in the army headquarters, and The request of He Brigade Commander to take the initiative to attack was rejected by Zhang Zizhong, who said: "It is foolish for you to fight hard. If a war breaks out, there are two sides of happiness: on the one hand, the Communist Party, which conforms to their anti-Japanese ideas, and on the other hand, Chiang Kai-shek, who can use the War of Resistance to eliminate us, and lead the troops not to be afraid of no war, but not to fight for individuals. ”
He Jifeng replied: "The current situation is not that we want to fight the Japanese, but that the Japanese want to fight us." ”
Zhang Zizhong's words made Zhang Zizhong dumbfounded, and Zhang felt that He Jifeng was resolute and difficult to convince, he was the commander of the 38th Division, not He's direct commander, and it was not easy to give orders to stop it. Therefore, through the military department, He was given the order that "only resistance is allowed, no attack is allowed." The Chinese defenders lost the opportunity to attack and were completely caught in a passive situation. The officers of the 29th Army watched as Japanese reinforcements arrived one after another.