Two months later.

"One, two, push!"

With the roar that sounded almost at the same time, under the fifty huge counterweight trebuchets, countless cannon fodder soldiers struggled forward at the same time, pushing the wooden bars in front of them, taking heavy steps, like a large flatbed cart on the base, one by one wooden wheels slowly turned, this behemoth moved forward little by little.

The giant arrows of the bed crossbow roared.

From time to time, the counterattacks from the city walls brought down the cannon fodder soldiers who pushed the trebuchet, but those who did not fall continued to move forward without raising their heads under the threat of the Mo knives of the overseer team behind them, and behind them were a series of specially made carts, each of which was loaded with a huge granite stone projectile, and the cannonball shells specially polished into a ball by stonemasons weighed three hundred catties, and followed closely under the impetus of those same cannon fodder soldiers. In addition, there are also black canisters on them, which are filled with foul-smelling crude oil, which will then be poured on stone bullets, ignited and then thrown out, which is best to hit the city wall, and if it misses the wall, as long as it can be thrown into the city, it will also cause losses to the rebels.

In front of these trebuchets, Yang Dashuai was holding a special shield in one hand and dragging a large iron bucket full of lime in the other, constantly drawing white boxes on the ground, each box corresponding to a trebuchet.

It's not that simple to attack the walls of the city.

First of all, it is necessary to measure the different ballistics of each trebuchet, and then determine the position of the distance from the city wall according to the height of the city wall, and in this accurate position, it is also necessary to try to ensure that the weight of each stone projectile is consistent, only in this way can it be ensured to hit, of course, it is impossible to hit a hundred shots, and a quarter of the hit rate is very good, and finally the city wall is collapsed by the stone projectiles that are constantly thrown.

The rammed earth walls couldn't hold this thing.

You must know that at this time, even the outer city wall of Chang'an is not covered with bricks, don't compare the city wall at this time with those modern relics, the large-scale brick packaging of the city wall was only started in the Song Dynasty.

Before this, only the city gates of some important cities, such as Chang'an City, and the special nature of the inner city wall, such as the imperial palace, as well as the sub-city of the military town to wrap bricks, but all the city walls are covered with bricks are almost none, the cost is too high, and even until the Northern Song Dynasty Bianliang outer city is still rammed earth-based, only the city gate is covered with bricks, but Yangzhou is very luxurious with bricks, until the Southern Song Dynasty, large-scale city wall bricks began, to the Ming Dynasty basically decent city all bricks, Moreover, the thickness of the cladding layer is also a process from thin to thick until Shanhaiguan.

But then it's rammed earth.

This kind of thing has limited strength, and sometimes it can even be damaged in heavy rain.

The first trebuchet finally arrived, Yang Feng held a special two-centimeter-thick iron shield, resisted the huge crossbow arrows that were fired at his bed intensively, and commanded the soldiers to quickly push the trebuchet into position, and then the other trebuchets gradually arrived, and it took half an hour to all be in place.

"Reload!"

Yang Feng shouted as he stood beside the first trebuchet.

A wheelbarrow pushes a stone bullet forward, loads it into a wooden slideway, and then rolls forward into a pocket made of cowhide, and soldiers scoop up crude oil and carefully pour it on the stone bullet to quickly ignite.

"Put!"

Yang Feng roared.

A soldier with a large waist and a round waist slammed down the brakes with a sledgehammer, and the wooden cage filled with stones at the end of the short arm suddenly fell, and the giant log at the end of the long arm suddenly lifted upward, and at the same time, the chain at the front end dragged the stone bullet ignited in the cowhide pocket and rushed forward, and then broke away from the slide and rose into the air. After reaching the apex, the stone projectile with flames flew out with a roar, and quickly flew over a distance of two hundred and fifty steps in a daze, dragging a long trail of smoke like a meteor, and accurately hit the opposite city wall, and the boulder weighing three hundred catties falling from the sky instantly smashed the arrow stack, and at the same time, a piece of rammed earth more than three meters wide collapsed in the fragments that were stirred up.

"Go on!"

Yang Feng said with satisfaction.

A soldier held the rope hook pulled from the winch, climbed to the long arm and hung in the ring below, the soldier at the bottom struggled to turn the huge winches on both sides, the long arm was gradually pulled down again, and after pulling to the bottom, the soldier with a big waist and a round waist pushed the brake lock again, and then the second stone bullet was loaded.

And Yang Feng had already commanded the second trebuchet to also shoot stone projectiles.

This one hits high.

"Three feet back!"

Yang Feng looked at the height of the stone projectile passing the city wall, and then said.

The soldiers immediately pushed the trebuchet back three feet and then re-fixed, the second stone bullet flew out and hit the middle of the city wall accurately, and a large area of rammed earth collapsed, although these rammed earth are very strong, and even add various things to achieve the effect of similar triple soil, but it is still soil after all, it doesn't matter if it is dozens of pounds of stone bullets, three hundred pounds of stone bullets fall like this......

Even Yang Feng didn't dare to resist!

Even real plain concrete will be smashed and collapsed.

"Keep shooting!"

Yang Feng patted an officer on the shoulder and said.

In this way, under his personal command, fifty counterweight trebuchets completed their aiming, and began to drop bombs continuously, the pointing of these trebuchets was converged, and all the stone bullets attacked a section more than ten zhang wide, although the accuracy error was very large, in fact, most of the stone bullets flew into the city, and even some fell outside the city, but each round of attacks will always have no less than ten hitting this section of the city wall.

That's enough.

These boulders, trailing with long tails of flames and falling with a terrifying whistling, cause serious damage to the walls with each hit.

Especially after the continuous blows, the rammed earth of the city wall also began to loosen because of the vibration, so that the effect of the attack was immediately significantly enhanced, and the city wall of more than 30 meters wide between Anhua Gate and Mingde Gate continued to collapse piece by piece, and it was already unrecognizable in less than an hour.

The defenders were powerless to fight back.

They actually have trebuchets, but their trebuchets can't hit four hundred meters away, and those dozens of pounds of stones all fall dozens of feet away in front of these trebuchets, and the same bow and arrows and ordinary crossbow arrows can't reach this distance, the only effective thing is the bed crossbow, but these trebuchets are surrounded by wooden shields, and most of the giant arrows shot by the bed crossbow are blocked by thick wooden boards, in fact, even if there are no these wooden boards, it is useless, because the accuracy of the bed crossbow at such a distance is very low, and the number is limited, at most it is a little harassing, It doesn't affect the launch of the trebuchet at all.

"This thing is really a siege artifact!"

Li Jiao sighed as he looked at the gradually crumbling Chang'an city wall in the distance.

"King, wrap another layer of bricks on the city wall, and then put the same stone cannon in the city, you can easily solve the threat of this thing, the collapse of the city wall is the rammed earth is easy to collapse, but if the outside is covered with a foot thick green bricks, even if the stone bullet hits the city wall, it will only smash a little skin, and it will not cause a large piece of rammed earth to collapse. If you are more extravagant, wrap the city wall with three-foot-thick green bricks, it is estimated that the broken stone bullet is not the city wall, and then the same stone cannon is built to counterattack in the same way, then the unlucky one is not the defending side but the besieging side, in the final analysis, there will be a spear and a shield, and all offensive weapons will have corresponding defensive means! ”

Yang Feng said with a smile.

"Deng Gong is indeed thoughtful!"

Li Jiao said with a smile.

He was also worried that if he would build this, and there would be a rebellion in the future, wouldn't Chang'an City become an ornament, and now when he heard that Yang Feng had already had a way to resist, he had to say that Deng Guogong was really a loyal minister of the Tang Dynasty! Of course, what he didn't know was that the reason why the loyal minister told him this was that if he didn't tell him, he was sure that others would be able to come up with it, and second, if the loyal minister became a rebel, he would not use a trebuchet to smash Chang'an City at all......

Well, the loyalists will be pushing the Hongyi cannons.

"According to this situation, it doesn't take dark to smash it open, at that time, Cui Yi and the others will not defend it, I am afraid that they will escape from Chang'an at night, and they need to prepare early!"

Guo Ziyi said.

"Shibo and the prince are attacking the city, and the little nephew leads the three towns of the Western Regions to line up the Baqiao!"

Yang Feng said.

Fleeing eastward from Chang'an, the only route is along the north side of Lishan, the corridor of Xinfeng on the south bank of the Wei River, and the most important node on this route is the Baqiao, the stone arch bridge on the Bahe River twenty miles outside Chang'an City, is the only way to go east from Chang'an, and his army only needs to wait for the Baqiao. Cui Qianyou has no other route to choose, if they didn't burn the Wei Bridge themselves, maybe they could go north, but they burned the Wei Bridge themselves, then that is, only the Baqiao route can go, this section of the Wei River after conmerging into the Feng River, Heihe and other tributaries, it is no longer possible to cross on horseback.

"Okay, it's time to break the enemy!"

Guo Ziyi and Wang Sili looked at each other and said.

Yang Feng is very kind, whoever enters the city first will rob it first, even if this is Chang'an can not rob unscrupulously, it is inevitable that small-scale soldiers will rob themselves, Yang Feng will give them the first opportunity to enter the city, that is, give them the opportunity to make a fortune, and entering the city first is also the first merit, this love still has to be received.

As soon as they finished speaking, there was a sudden cheer in front of them.

Several people immediately raised their heads, and saw the city wall in the distance, with the hit of a stone bullet, in the dust splash, a small gap appeared, and it was particularly eye-catching on the background of the billowing smoke rising from behind, it was obvious that the complete collapse of the city wall had begun, and under the continuous blows, the thickness of the remaining part was no longer enough to withstand the stone projectile attack, and the stone bullet directly opened the city wall.

"It seems that I can't wait for dark, the three towns of iron horses, immediately follow me to the Baqiao!"

Yang Feng picked up the mace on the side and shouted.

Then he turned east.

The 8,000 mounted cavalry that had been arrayed on the right flank urged their horses, including the infantry on horseback, and the torrent of steel began to rush to the Baqiao in the distance.

"Armies prepare to storm the city!"

Guo Ziyi, who was behind, also pulled out his knife and shouted.