After all, the number of guards on the Tiger Prison Pass is not large, and only four or five thousand people are only four or five thousand people to deal with the 30,000 soldiers and horses of Sun Xia's headquarters who attack under the Tiger Prison Pass, and they are already overwhelmed, so how can they still have the effort to care about the wood projected.

It was only when the timber was projected onto the tower of the city, making more and more timber on the tower of the Tiger Prison Pass, that the soldiers defending the city realized that something was wrong.

But even if they realized that something was wrong, they would never have imagined that a tragic battle would follow.

After all the firewood prepared by Zhou Cang in the past few days was projected into the tiger prison by trebuchet, he immediately asked Huang Zhong for advice.

Huang Zhong divided the trained battalion of 1,000 archers into two sides, with 500 people standing on each side, and then loaded the finished wooden arrows with bows and arrows, and began to wrap the edges of the bows and arrows in oilcloth and set them on fire.

The tarpaulin on it was very resistant to burning, and it ignited at the slightest moment, and the flames began to burn on the rocket.

"Shoot at those towers!"

Huang Zhong gave an order.

These archers, who had been trained by him for a long time, finally began to shoot rockets from their bows and arrows towards the tower of the Tiger Prison Pass.

Because of the geographical location they occupy, they have an advantage, shooting from a high down, the arrow can fly farther.

And this time they don't need to hit the soldiers, they just need to shoot rockets at the towers and set fire to the oil-stained wood that they have left behind the towers.

This kind of shooting is much easier than shooting soldiers in the city directly from a high place, and even shooting indiscriminately is no problem.

In an instant, thousands of arrows flew from the cliffs on both sides.

What's more, the arrows still carry a small flame on them.

When these arrows flew and turned into stars in the sky, the guards of the Tiger Prison finally realized something.

He keenly sensed that something was wrong with the timbers that had been thrown up the tower from the enemy, and that there was a strange smell on them.

Familiar with the equipment used to defend the city, he quickly realized that the wood was contaminated with fire oil, which was extremely flammable, and the slightest touch of fire would turn out of control and turn into a sea of fire, which could quickly spread throughout the city wall in a short time.

"Not good, the enemy wants to attack with fire!"

The defender thought that it was too late for the enemy to attack with fire, and the rockets fired by the shooters under Huang Zhong's command had already fallen from the sky.

Puff puff puff.

The arrows carrying the flames fell on the firewood, which immediately caused the licorice on the firewood to burn rapidly.

The flames burned quickly, especially at this time, when they were gently blown by the wind, and spread faster.

In the blink of an eye, a dozen places on the castle tower began to appear with a lot of flames.

"Send someone to put out the fire!"

After realizing the enemy's strategy, the defender no longer had the heart to deal with Sun Xia's men and horses under the city, but immediately called the people on the city tower to put out the fire.

If they didn't put out the fire in time and wait for the flames to spread, their entire city tower would be burned to ashes by this fire.

When the time comes, there will be no people, what will you rely on to defend this tower, and I am afraid that the Tiger Prison Pass will also fall into the hands of the enemy.

The Tiger Prison closed thousands of defenders, and at this point most of the men began to turn to extinguish the flames on the towers.

But the flames on the tower burned too quickly.

Some of the flames that had not yet burned were extinguished by the official guards, but some of them were too far away and the fire became larger and difficult to extinguish over time, and the flames gradually began to spread.

In addition, Huang Zhong on the cliffs on both sides kept killing the shooters and throwing rockets at the city tower.

Even if some of the flames are extinguished, new flames will be lit in new places, and there will be no end to them.

In this way, the officers and guards were tired of running. In a short period of time, there was no way to extinguish the flames on the castle tower. I could only watch as the flames grew larger.

Eventually, the entire castle tower was set on fire.

Originally, there was some water on the castle tower to prevent fires. But this little water source is not enough to extinguish all the flames, not only exhaust these water sources, but also greatly reduce the available water in the Tiger Prison Pass, plus the Tiger Prison Pass does not have its own moat, the water source is insufficient, and even the drinking water in the city is in a hurry for a while.

After the fire broke out, it immediately caused panic among the soldiers of the entire Tiger Prison Pass.

Liu Zheng, who was standing outside the Tiger Prison Pass to supervise the battle, saw that the Tiger Prison Pass in front of him had turned into a sea of fire. A smile of relief appeared on his face.

He knew that there was no suspense in this battle to attack the Tiger Prison Pass, although it was not possible to directly attack the Tiger Prison Pass now, but after the flames were extinguished, this Tiger Prison Pass would be a city that Liu Zheng could capture at will.

"Quick, Yang Feng, you go and order Sun Xia, and when the official army can't fight back in the city tower, quickly break through the city gate of the Tiger Prison!"

When he saw that the defenders of the Tiger Prison Pass were no longer able to deal with Sun Xia's troops under the city, Liu Zheng immediately ordered Sun Xia's men and horses to start attacking the city with all their might.

Although the walls of the Tiger Prison Pass are strong, the city gate is still made of wood after all. Although some of them were wrapped in iron guardrails, it was not impossible to break through the gates.

Before, there were guards on the city tower who were on the defensive, and from time to time they counterattacked Sun Xia's troops, making the task of breaking the city gate a little difficult.

But now that there are no troops on the tower, it is easier to break through the gates.

Sun Xia, who received Liu Zheng's order, immediately began to command his soldiers and horses to break through the city gate with all his might.

As the flames in the Tiger Prison became more and more intense. The city gate under the city has also been attacked by Sun Xia's troops with all their might, or it won't be long before the Tiger Prison Pass will belong to Liu Zheng.

It didn't take long for the gate of the Tiger Prison Pass to be broken by Sun Xia's troops, but Liu Zheng did not directly lead people to rush into the Tiger Prison Pass, after all, the flames of the Tiger Prison Pass were burning vigorously at this time.

At this time, entering was nothing more than looking for death, so Liu Zheng ordered all the troops to assemble outside the Tiger Prison Pass, and wait for the flames to gradually decrease or even extinguish before entering the Tiger Prison Pass.

However, looking at the vigorous flames burning on the tower of the Tiger Prison Pass at this time, the red flames reflected the entire sky into a sunset color. Looking at this momentum, these flames are far from being extinguished in a short period of time.

After a few hours, the sky had completely darkened, and night fell, but there were still small flames rising in the Tiger Prison Pass from time to time, burning the entire Tiger Prison Pass transparently and brightly.

However, the fire had been greatly weakened, Liu Zheng looked at the time, and took advantage of the night to lead his troops. Walked into the Tiger Prison Pass and took over the city defense of the entire Tiger Prison Pass.

The Tiger Prison was littered with ashes, and many buildings and utensils were burned down, leaving only an empty city.

Most of the guards and guards in the city were burned to death, and only a few escaped through the gates on the other side.