On the head of Tongguan City, in addition to preparing a certain number of bed crossbows, there are also a large number of throwing speculation of different scales, which were originally prepared to throw stones and other powerful lethal "weapons", but now they have become equipment for throwing hay and hot oil, and a large number of dry grass and hot oil are thrown into the forbidden ditch through throwing speculation. Because the city wall of a large section of Tongguan City is built against the forbidden ditch, the passes of the twelve cities even break into the forbidden ditch, and the sergeants can also throw hay and hot oil into the forbidden ditch and smash it on the head of the rebels, and soon a large amount of hay and hot oil are piled up in the forbidden ditch, and ignited under the action of rockets, and the fire spreads at a very fast speed.

The forbidden ditch became a "fire ditch", a large number of rebel sergeants were trapped in the sea of fire, and the formation of the attack was instantly chaotic, and those rebel sergeants who rushed to the edge of the forbidden ditch all "reined in from the precipice", and stood on the east edge of the forbidden ditch, and turned around and fled with instinctive movements to avoid rushing into the sea of fire. But the dense charge is not so easy to turn around, the sergeant in front stopped, and prepared to retreat, but the sergeant in the back still rushed quickly, the sergeant advancing and retreating sergeant collided with each other, the scene was suddenly chaotic, many sergeants who stopped and wanted to turn around and flee the sea of fire were pushed into the sea of fire by their companions who were still charging behind.

Cui Qianyou, who discovered this situation, was shocked, and immediately issued an order to suspend the attack, and ordered the whole army to retreat and get out of the sea of fire. But the front was already in chaos, and there was no way to effectively convey orders, let alone in a critical situation, the instinct of escape made many people not care about the formation and orders at all, they just wanted to stay away from the burning fire, desperately looking back. In this case, it is impossible for any general to organize an effective retreat.

The Tang army at the time of the Battle of Lingbao was almost like this, under the attack of the fire, it was quickly defeated, but no one expected that something similar would happen to the rebels.

But something even more terrifying followed, the south gate of Tongguan opened, and a Biao Tang army elite cavalry under the leadership of a fierce general rushed to kill, only to break into the chaotic rebel army column after a while.

At the beginning of the siege, Cui Qianyou arranged 5,000 men and horses in the direction of the main gate of the south gate in order to prevent the surprise attack of the Tang army, but after the raging fire in the forbidden ditch was ignited, under the impact of the chaotic team, the 5,000 men and horses were also scattered. The Tang army that came from the storm was like entering a no-man's land, and it was wantonly rushing and killing under the command of the leading generals.

The leader of the army rushed to kill the 3,000 men and horses led by Wang Sili, who was arranged by Yang Xi and prepared to take advantage of the rebel chaos to break up the rebel army and even defeat the rebel army. They rushed out when a fire was lit in the Forbidden Ditch and the rebels besieging the city were in disarray.

These 3,000 men and horses were almost the most elite and effective 3,000 people in Tongguan City, and under Wang Sili's first charge, everyone rushed to the rebel formation as if they were desperate for their lives.

The attacking rebel army was already in a mess and collapsed, how could it still restrain the impact of these 3,000 men and horses, it was even more chaotic, whether it was an officer or an ordinary sergeant, they were all crying loudly there like a mourning concubine, only hating their father and mother for giving birth to their own feet, and there was no way to run faster. Wang Sili's department slashed and slashed as much as he could, as if he had entered a no-man's land, and almost did not encounter any decent resistance.

"Brothers, the time for revenge has come, why did my brother who died in Lingbao ask for a life!" After slashing and killing five rebel sergeants he encountered during the charge in a row, Wang Sili waved his war horse and shouted to the sergeant beside him: "The rebels have been defeated, and they can no longer resist the attack of our army, kill, the time has come to make military merits!"

In the midst of the shouts of killing, another hapless rebel sergeant was cut off his horse by him, and was soon trampled into a pile of meat by the continuous hooves of the horses.

Wang Sili did not love to fight, but commanded his men and horses to go straight to the east side of the forbidden ditch, preparing to storm Cui Qianyou's command post.

The east edge of the forbidden ditch is a piece of terrain difference is not very large, stretching for several miles of open hillside land, can gather nearly 100,000 horses, Cui Qianyou's front army of 70,000 people all hoarded here in the past two days, Tian Qianzhen's follow-up 30,000 people have also opened here.

After the defeat of their own men and horses in the fire attack, these nearly 100,000 horses have fallen into chaos, especially the 50,000 people who are lined up in front of them to attack, which can be said to have become a nest of porridge. Wang Sili's rapid onslaught added to the confusion even further, and even the place where Cui Qianyou and Tian Qianzhen were standing was in chaos, and there were sergeants everywhere who wanted to flee for their lives.

"Report to the deputy marshal, the Tang army has gone out of the city to raid our army, both in the direction of the south gate and the east gate, and our army has no way to resist!"

A lieutenant quickly ran to Cui Qianyou's side and reported the situation loudly.

At the same time that Yang Xi led Wang Sili to lead the army to raid from the south gate, he also ordered Li Chengguang to lead 1,500 soldiers out of the east gate to attack the enemy.

Because of the rout in the direction of the south gate, the rebels in the direction of the east gate were also affected, and the sergeants retreated.

Seeing this, Li Chengguang did not hesitate to lead 1,500 people to rush out from the east gate.

The defeated rebels did not know how many Tang troops rushed out of the city, and when they heard the shouts of killing, they only tried to flee desperately, and soon scattered the rear army columns. The rebel rear army, which thought that the Tang army was fighting back with all its might, was hit by the defeated front army, and soon disorganized its formation and scrambled to flee. The commanders at all levels were desperately shouting orders to the sergeants not to mess up and to maintain the formation, but the effect was not obvious.

Without encountering any resistance, Wang Sili tried to break through the rebel array, wanting to disrupt the rebels, and even fish in troubled waters to kill Cui Qianyou or An Qingxu.

It's a pity that too many rebels have gathered along the east edge of the forbidden ditch, and the terrain has certain ups and downs, although the 3,000 men and horses led by Wang Sili have a smooth impact and have not encountered major resistance, but they can't plunder the camp to their heart's content, and they can't rush to the close of the men and horses led by Cui Qianyou.

Wang Sili could only lead his men and horses to rush back, rushing back and forth, trying to cause more chaos to the rebels.

"It's a pity that there is no way to avenge the spirit treasure!"

When Wang Sili led the army to rush to the forbidden ditch again, he sighed with emotion, shouted the sergeant, and rushed back to the city.

Wang Sili understood why Yang Xi only ordered him to lead 3,000 men and horses to attack the enemy. Even if he led more men and horses out of the city to sneak attack, he would not be able to achieve greater results. In front of Tongguan City, the terrain is too narrow to start a larger-scale battle, the advantage of speed cannot be brought into play, and as long as the leading generals do not escape, the situation will eventually be reversed.

His troops have caused a lot of chaos to the rebels, and the rebels who are in a mess will no longer have a chance to attack the city, and their men and horses who will raid out of the city will not be able to expand the results of the battle, and it is the best choice to rush back to the city when they see that it is good.

If the rebels had organized an effective formation to meet the attack, it was unknown whether their 3,000 men would have been able to rush back to the city intact!