In this battle of Zhu Wei's army attacking Youxian, the first to be dispatched was the Dongwu car driven by the auxiliary soldiers.

Most of these auxiliaries hidden in the cave house car are some veterans in their forties and almost fifties, and they actually have a certain combat effectiveness, but now in order to ensure the elite of Zhu Wei's main army, they have all been eliminated as auxiliaries.

But most of them are veterans who have been on the battlefield and have seen blood, so they can naturally give full play to the psychological advantages of veterans.

Therefore, they were selected to become auxiliary soldiers who used the cave house car to attack the city, so that even if the cave house car was burned by fire oil, and some soldiers were also on fire, these veterans could still keep calm and push the cave house car back.

They were well aware of the benefits of this, not only would they be able to retreat to safety without becoming a target for archers on the city walls, but they would also not let the cave house car affect the siege efficiency of other cave house vehicles in the future.

It wasn't until they got out of the danger zone that some of the soldiers who caught fire in the cave house car hurriedly ran out and rolled on the ground to extinguish the fire, while other soldiers directly shoveled up sand and soil with shovels on the spot after running out of the cave house car, and splashed them on the cave house car in an attempt to extinguish the flames burning on the roof of the car.

In Zhu Weijun's military merits, rewards and punishments are very clear, so if these auxiliaries who use the cave house car can dig up the city wall, they will naturally be rewarded for their meritorious service, so don't look at these auxiliaries have withdrawn from the main army sequence, but they are all very warlike, and they also think that they can be rewarded for meritorious service and be assigned to the field to become a small landlord.

Anyway, they hid in the cave house car, and they wouldn't be hurt too much, and at most a few soldiers were burned like now, but the vast majority of them were still safe and sound, so their mentality remained very stable.

Of course, these cave houses are also carefully designed, and even if the top is poured with fire oil and ignites the flames, it can be quickly extinguished with earth and sand.

In addition, there is a fireproof wet soil layer on the top of the cave house, which is not so easy to burn and ignite, and now as long as the flame caused by the fire oil is extinguished, the remaining embers will be difficult to maintain.

At the same time, the top of the cave house car is also a drawer-like structure, so for some places where the top of the cave house car is smashed by falling rocks, you can directly pull out the broken wooden board and replace it with a new wooden board, and then fill it with wet soil, which can restore the function of the cave house car again.

Unless the wheels of the cave house car are smashed and burned, that is the damage that will really affect the continued use of the cave house car, but the wooden eaves guard plate on the top of the cave house car also protects the wheels below, so even if the top of the cave house car is damaged, as long as it comes back to repair it, it can often be used repeatedly on the battlefield, and it is not so easy to be scrapped.

Now there are more than 20 cave house cars, so one cave house car in front of it retreats, and there are other cave house cars on the back soon, which can continuously excavate the city wall of Youxian County.

Anyway, the auxiliary soldiers hiding in the cave house car carried the falling rocks and fire on the city wall, just to quickly dig a hole in the root of the city wall in Youxian County to place the black powder jar urn.

Zhu Weijun has such a secret weapon of the era as black powder, so naturally there is no need for these auxiliary soldiers hiding in the cave house car to really dig through the rammed earth city wall of Youxian County, as long as they can dig a space where black powder can be buried, they can be regarded as completing the task.

When the Taiping Heavenly Kingdom rebelled in later generations, the Taiping army often used coffins filled with gunpowder to blow up the city walls, and it is said that this is how the Taiping army blew up the stone walls of Suzhou and Nanjing.

But now in the face of the rammed earth city wall at the end of the Eastern Han Dynasty, there is no need to fill the coffin with so much black powder, as long as a few urns and pots are filled with black powder, and then filled up, leaving a bamboo pole as the fuse to ignite the black powder, you can let the buried black powder explode, and cause some damage to the city wall.

Even if you can't blow up a gap at a time, it is estimated that you can blow up a slope, and you can let Zhu Wei's soldiers kill the city wall along the slope, and then enter Youxian.

In this way, under the constant harassment of falling rocks and flames on the wall of Youxian County, the auxiliaries hiding in the cave house car successfully dug four holes for explosion at the base of the city wall of Youxian County, and then transported the black powder canister up.

And just when the cave house car was digging the city wall in front, Wang Yuyan had already started further siege actions, first transporting six torsion thunderbolt cannons to the military formation where Pang Yan was located.

Soon these torsional thunderbolts lined up and hurled a rain of rubble onto the walls to cover the caverns digging below.

It can be said that the siege methods controlled by Zhu Wei's army now have a complete set of procedures, and this time Youxian has also become an experiment in experimenting with this siege method.

Wang Yuyan looked at the situation in front of her and felt that it might not be a problem to win Youxian in a war.

After all, at this moment, Pang Yan also sent Wei Yan's news to Wang Yuyan's side, so at a critical time, there is Wei Yan who can respond internally in Youxian County, so it will naturally be easier for Zhu Wei's army to enter Youxian.

So Wang Yuyan was determined to break the city in one battle.

At this time, Wang Yuyan was already thinking about how to intercept Liu Pan's deserters if he broke Youxian, and how to deal with Huang Zhong's military village on the hill next to Youxian.

So Wang Yuyan passed on the military orders one after another, and soon Mu Lan commanded 5,000 sword and shield men and 1,000 crossbowmen, with a mobile barrier composed of eight or nine spears, spears and tiger carts, and came in the direction of the hill military village where Huang Zhong was located.

After a short time, Mu Lan formed a defensive line between Huang Zhong's hill military village and Youxian, obviously to prevent Zhu Wei's army from attacking Youxian, Huang Zhong led his troops out to rescue Youxian.

Then Wang Yuyan recalled Ling Cao from the front, and replaced Chen Jie with him, and then helped Pang Yan to attack the city, and after Ling Cao came back, Wang Yuyan asked him to wait for the opportunity to move with five thousand archers behind him, and support Huang Zhong who was attacking on Mu Lan's side at any time, or he could follow Wang Yuyan's order to bypass Youxian to pursue Liu Pan's remnants.

It can be said that Wang Yuyan mobilized nearly 30,000 troops on Zhu Wei's side, just waiting to blow up or collapse the city wall of Youxian, and the whole army will attack Youxian.

Seeing Zhu Wei's army deploying troops in such a purposeful group, Liu Pan, who was located on the gate tower of Youxian County, also looked solemn, although he didn't know that Zhu Wei's army was preparing to use black powder to blow up the city wall of Youxian County, but from the deployment of Zhu Wei's army, he knew that it would soon be a real siege battle.

However, Wei Yan, who led the troops back to Youxian, did not return to the city gate tower, but only sent people to the city wall to secretly observe the situation of Zhu Wei's army attacking the city, and then began to think about what he could do in the city.

Huang Zhongyao, who was located in the military village on the hill, looked at the situation in Youxian from afar, and also frowned.

Seeing the city-breaking formation of Zhu Wei's army gradually opening up on the side of Youxian, with the cave house car digging the city in front, the torsion thunderbolt cannon set up in the back, and the spear stabbing tiger car wall that was specially aimed at his side to support Youxian blocking the road, Huang Zhong felt the danger of the situation, and it seemed that Zhu Wei was preparing to go down to Youxian County in a battle......