In the original history, Cao Cao spent more than a month and almost ran out of grain and grass before he attacked and captured Shouchun City with the help of morale boosting.

Although it is now Zhu Wei, Cao Cao, Liu Bei, and Lu Bu besieging Shouchun City, in terms of the city defense of Shouchun City, if it is an ordinary siege method of climbing the wall attached to the wall, it will still consume a large number of soldiers' lives.

But if it is by digging the city, Zhu Wei believes that it will only take a few days or even ten days at most to dig through the walls of Shouchun City, and he will be able to easily enter Shouchun City.

In terms of time spending, it is also much less than the time for Cao Cao to capture Shouchun City in the original history.

At the same time, compared to other tactics of storming Shouchun City, this is definitely a way to make the defenders completely unable to deal with it, because even if the Yuan Shu soldiers in Shouchun City build a new city wall inside the city wall, they are not as fast as Zhu Wei's side to dig the city wall.

This can definitely allow Zhu Wei to use the least troop loss to attack the tactics of Shouchun City.

Therefore, this time, Zhu Wei built his large army camp directly outside the south gate of Shouchun City, in order to put pressure on the defenders of Shouchun City, and also put Zhu Wei's army directly under the Shouchun City Wall, so that Zhu Wei could send troops from the military camp to support the soldiers stationed under the Shouchun City Wall at any time.

Zhu Wei didn't want his elite soldiers to be wasted in the loss of the ant-attached siege, although the siege would inevitably have a lot of damage, but if it was really a siege method of climbing the city wall with the ant-attached climb, the six- or seven-story city wall of Shouchun City, even if it accidentally fell down, it would be the end of immortality and cripplement.

Even if Zhu Wei is assisted by various siege equipment, if he really uses the method of attacking the city with ants, Zhu Wei's troop loss will definitely be very heavy, which is not what Zhu Wei wants to see.

To be honest, after beating Yuan Shu, the next between Zhu Wei and Cao Cao may not be able to maintain peace, if the troops are consumed too much, who knows what will happen.

Therefore, this time to attack Shouchun City, Zhu Wei set up a city digging tactic, so although the progress of the siege is slower, it is mainly stable.

Besides, Zhou Yu has made a plan according to the possible changes on Lu Bu's side, it is very likely that he can take this Shouchun City without attacking the city, but the strategy or something, after all, it is the plan to make things happen in the sky, and there may be many unexpected changes.

Anyway, Zhou Yu's plan also needs time to be carried out, and this time can also be used to cooperate with the implementation of the city excavation tactics, which can be regarded as a mistake between the two, even if Zhou Yu's plan is flawed, at least there is this means of forcibly breaking the city.

To be honest, based on the previous performance of Yuan Shu's army, Zhu Wei believed that once his army entered the city, he would not have to worry about the number of Yuan Shu's tens of thousands of troops at all.

Zhu Wei has full confidence in the combat effectiveness of his army, as long as he can attack Shouchun City, no matter how many troops Yuan Shu has, it will be a floating cloud.

Therefore, after deciding on such tactics, under the city wall of the south gate of Shouchun City, Zhu Wei's army only methodically followed the established tactics, slowly filled in the moat, and slowly extended the anti-arrow fortifications to the city wall.

From this side of the situation, even if Zhu Wei's army did not launch such a strong offensive against Shouchun City, until now, on the fifth and sixth siege arrow towers in front of the urn city at the south gate of Shouchun, there are probably more than 1,000 soldiers who are suppressing the Yuan Shu soldiers on the head of the urn city wall, but in fact, they have not caused much threat to the Yuan Shu defenders.

But seeing Zhu Wei's army burying the moat little by little, and watching the anti-arrow fortifications like houses under the city wall approaching the city wall little by little, the Yuan Shu defenders on the city wall still felt a little chill in their hearts.

Although they didn't know what Zhu Wei's army was going to do, they instinctively had a sense of crisis.

Seeing Zhu Wei's army drumming up something under the city wall, but they couldn't stop it at all, and all kinds of defensive materials and defense means prepared on the city wall seemed to have little effect at this moment.

At least when Zhu Wei's soldiers paved the anti-arrow fortifications below like houses in front of the city wall, even if they threw stones and rolling wood, they had no goal.

In fact, there is still a distance of seven or eight steps between the moat and the city wall of Shouchun City, and now the auxiliaries of Zhu Wei who have filled in the moat have not completely crossed the anti-arrow fortifications.

In this way, the defense means of the city, except for rockets, other things are really not used.

However, when the rocket is fired on the roof of the fortifications covered with wet mud and wet soil, it cannot burn any flame at all, so it is a waste to shoot the rocket.

But seeing the enemy's movements like this, I can't do anything, after all, it feels quite strange.

However, Zhang Xun, who is the guard of the south gate of Shouchun City, seems to have seen the threat of Zhu Wei's siege method, and thought that Zhu Wei might dig the city and attack it, so he sent someone to Yuan Shu in the city to send a message as soon as possible, asking if he could send troops out to kill for a while.

Now only by sending troops out can it be possible to destroy the houses laid by Zhu Wei's army under the city wall, and it is possible to disrupt the offensive of Zhu Wei's army.

Later, Zhang Xun asked people to prepare more fire oil, although the house-like anti-arrow fortifications laid by Zhu Wei's army could not be burned with rockets, but after they were laid in front of the city wall, perhaps using fire oil and other combustibles to increase the power of rockets, there was still a possibility of destruction.

Before trying it, no one knows if the oil can burn the anti-arrow fortifications covered with wet mud underneath.

But there is another thing that makes Zhang Xun feel a headache, that is, the archers of Zhu Wei's army located on the siege arrow tower, in addition to looking for opportunities to shoot the defenders on the city wall, often also look for places such as fire oil canisters prepared on the city wall to launch rockets.

And once these canisters were hit by rockets, the high-powered armor that was originally used for defense also became a terrible hidden danger to hurt the defenders of the city.

In these years, the oil used to serve as fire oil during the defense of the city was basically made of various animal and fish fats, which had a certain degree of adhesion, and added sulfur and other combustion-supporting substances to make the fire oil a little more powerful.

Therefore, when the fire oil is thrown on the enemy's siege equipment with the oil tank, the grease sprinkled in the oil tank is not easy to slip off and be removed, and after being ignited with rockets, it can cause local fierce flame burning, which is very destructive and harmful.

This is also often an important weapon used by the defenders to destroy the siege equipment used by the siege party, and many wooden siege equipment can be burned into charcoal.

But now this kind of oil tank for storing fire oil is placed on the city wall, and if it is shot by the enemy's rockets, it can also cause great damage on the city wall at once, even if it does not hurt the soldiers defending the city, it will form a flame area on the city wall, which has become a weak point for the defenders.

If it is a normal city attack and defense battle, the defenders can naturally hide these things behind the arrow battlements of the city wall, so that they are not easy to be hit by rockets fired from under the city, and they can also allow the soldiers defending the city to use and throw them at any time, and then use rockets to ignite and kill the besieging enemy.

But now that Zhu Wei has made a siege arrow tower that is about the same height as the city wall, the archers on the arrow tower can naturally see these prepared fire oil canisters on the city wall, so of course they will help their own people destroy this terrible weapon to defend the city first.

And after destroying these canisters, you can also let the burning oil damage the enemies defending the city, which can be regarded as killing multiple birds with one stone......