After a short period of calm, it immediately ushered in the tsunami-like offensive of the Wu army, and today the Wu army invested more siege troops, and the entire Anfeng city was densely packed, and only the crowds could be seen, like locusts and ants, overwhelming the sky.

Cao Liang looked at the city and frowned slightly, it was obvious that the strength of the Wu army had increased again, and the increase was not a few, in terms of scale, it had at least doubled.

With such a large number of troops, it is indeed a test for the defense of Anfeng City.

Moreover, the Wu army not only increased its strength, but also the heavy equipment such as catapults, bed crossbows, siege vehicles, and rushing vehicles also appeared in the Wu army, and the number of them increased significantly compared with yesterday, especially the catapults and siege vehicles, which appeared for the first time in the Wu army.

The siege vehicle is a large siege machine, in which a thick log is hung on a beam with a rope or iron chain, with a metal cap at the back end of the log and a metal head at the front end, which is mostly made into a sheep's head shape, called a battering ram. During the siege of the city, the soldiers in the siege vehicle grabbed the battering ram and moved backwards and slammed into the city gate, relying on inertia and kinetic energy to destroy the city gate or the latch structure behind the gate.

The city gate is often the weakest link in a city, and it is very easy to be damaged, and the appearance of siege vehicles is specially designed to deal with the city gates, and the bulky siege vehicles resemble the structure of the pointed roof, which can withstand the blows of rolling logs and stones.

Experienced defenders would attack with rockets, but the siege engines were soon upgraded, wrapped in iron or copper on the outside of the wood, and poured thick mud on the roof, so that even the rockets could do nothing with it.

The only thing that the siege vehicle needs to guard against is the destruction of the opponent's infantry, but in a general attack, the siege vehicle will be equipped with a certain number of infantry around it for protection, and it is also very difficult for the enemy to sneak attack.

This time, the Wu army used a large siege vehicle, aiming directly at the city gate of An Feng, and the huge battering ram hit the city gate, making a deafening roar.

The gates are generally made of heavy wood, covered with iron sheets, with more than a dozen bolts up and down, and when the gates are closed, thick logs are used as roof beams.

However, under the impact of the siege vehicles, such a heavy city gate still staggered, and the officers guarding the city gate had a face as white as earth, and hurriedly reported to Wang Ji.

Wang Ji's face suddenly became solemn, the city gate could not be lost, once it was lost, the Wu army could drive in, and their resistance on the city wall became meaningless.

Cao Liang suggested that all four gates of Anfeng City be sealed, so that the gates could be prevented from being lost.

However, after the city gate is closed, Anfeng City will become a dead city, and it will not be able to enter or exit, and the Wei army will have no other way than to defend the city, even if it is to break through, there will be no chance.

Wang Ji thought about it carefully, and finally agreed to Cao Liang's suggestion, sealing the city gate is probably the best way now, if it is not closed, the city gate will definitely not be able to withstand the repeated impact of siege vehicles.

In other words, closing the city gate is more of an attitude, and the defenders who have no way out can only live and die with the city.

Closing the city gate was actually very fast, Cao Liang arranged for the group of men and horses who were waiting to go out to battle to seal the city gate with stones and sandbags, thousands of soldiers, each of them with a stone or a sandbag, it was enough to seal all four city gates.

The main attack of the Wu army is the north gate, at this moment because of the violent impact of the siege vehicle, the north gate of the city gate is already crumbling, thousands of sandbags and stones blocked up, even if the Wu soldiers smashed the city gate, it will not help.

Bu Qi couldn't make a plan, so he offered a plan to Zhuge Ke and used a catapult to throw arquebuses into Anfeng City.

The catapults used by the Wu army are not too large, each catapult has only a dozen or so towers, this kind of catapult can only throw lighter and smaller stones, such as Anfeng City, such a strong city, this kind of catapult is generally not destroyed.

However, Bu Qi had another clever plan, using oil-soaked straw rope to wrap a large straw rope ball, and after igniting it, it was hurled to the head of the city or inside the city with a catapult to carry out a fire attack on Anfeng City.

Although the arquebus is large, it has no weight, it is much lighter than a stone, and the catapult can throw it high into the city of Anfeng.

The purpose of Buqi is to turn Anfeng City into a sea of fire, so that the Wei army has no place to stand, and then they are afraid that they will not surrender?

Zhuge Ke's eyes suddenly lit up, this method of Bu Qi was good, and he ordered his subordinates to immediately gather all the catapults, knot the grass into ropes, soak them in oil, and then wrap them into straw rope balls, ready to ignite and project.

Rice is widely planted in Huainan area, and there is naturally no shortage of straw, thousands of Wu soldiers started together, knotted grass as a rope, and wrapped rope as a ball, and soon Wu Bing obtained a mountain of straw rope balls.

Zhuge Ke ordered the catapult to be pushed not far from the city wall, lit the straw rope ball, and threw it with the catapult.

Fireballs flew towards Anfeng City with thick smoke, some landed on the city, and some fell directly into the city.

There is no danger if it falls on the head of the city, unless it happens to be smashed into the oil pot of the Wei army, and the rest of the places are masonry structures, which are fireproof, and the straw rope balls cannot cause fire.

But what fell into the city was extremely bad, the roofs of this era were all wooden structures, and there were many houses, even roofs made of grass, and these grass and wood structure houses were most afraid of fire.

The oil-soaked arquebus burns quickly, and once it hits the ground, it immediately rolls, sparks splash and catch fire.

If it falls on the roof, it is more likely to cause a fire, and suddenly the city is on fire everywhere, and the people in the city are in a panic.

Wang Ji obviously didn't expect Wu Bing to play such a hand, the fire attack would not be used in general, not because the enemy was merciful, but because the fire attack was very destructive, and the continuous fire attack might even reduce Anfeng City to a sea of fire, so even if the city was broken, it would only be a ruin.

What Wang Ji didn't know was that in fact, Zhuge Ke had already ordered the city to be slaughtered, even if he occupied Anfeng City, he would also set fire to destroy Anfeng City, and now he would act in advance.

Cao Liang personally went down to the city to direct the rest of the two groups of people to put out fires everywhere in the city to solve the urgent needs of the people, and if necessary, demolish some houses to make isolation belts to prevent the fire from spreading to the city.

After all, even if the arquebus is thrown farther, it is impossible to throw it to the center of the city, it can only be thrown close to the city wall, and the houses affected are limited after all, as long as it is dealt with properly, it can still avoid the whole city from falling into a sea of fire.