Liu Meng and the others couldn't stop the soldiers from fleeing, compared with those stone bullets that fell from the sky, the flesh and blood of people were too fragile, and if they rubbed against each other slightly, they were either missing arms or legs, and even their lives were gone.

If the enemy uses weapons such as bows and arrows, they can also use shields to protect, but with such a large stone projectile and such a fast speed, the effect of a shield is not much stronger than a piece of paper.

In this case, it seemed that there was no point in holding on to the city, and it could only increase casualties, so Liu Meng ordered most of the Huns to temporarily withdraw from the city, leaving only a very small number of people in the city to observe when the Wei army stopped the catapult attack and switched to a man-based attack, so that the soldiers in the lower city could return to the city to defend.

Because the catapult attack is only a prelude to the siege, and if you really want to break through the city, it must be done by people, Liu Meng believes that the Wei army will soon stop using catapults.

However, this was only Liu Meng's idea, and Cao Liang did not regard the catapult as an auxiliary means from the beginning, but as a main way of attacking.

For this siege operation, the Wei army made long-term preparations, not only spent a lot of manpower and material resources to build these fifty giant catapults, but also called a large number of stonemasons to make a large number of stone bullets.

A skilled stonemason can make five to six stone bullets in one day, and hundreds of stonemasons can make an astonishing number of stone bullets in half a year.

This time, the Wei army only transported hundreds of vehicles to transport stone bullets, and these vehicles were not just pulling a trip, they transported the stone bombs to the Wei army camp south of Jiuyuan, and then returned to Jinyang, running back and forth, and constantly transporting stone bullets.

Due to the abundance of ammunition, Cao Liang had no intention of saving at all, and prepared to carry out a saturation attack on Jiuyuan City from the beginning, and smashed Jiuyuan City to pieces with stone bullets.

The city walls of this era are mostly built of rammed earth, using cohesive high soil mixed with rice husks, wheat straw and lime, rammed layer by layer, most on the outside of the city wall, laying a layer of bricks, the surface of the brick layer, can only play a beautiful role, will not help the solidity of the city.

In the past, the human-drawn catapults threw stones with light weight, short range, and limited strength, which could only cause damage to the defenders and defenses on the city, but could not completely destroy the structure of the city wall.

However, the counterweight catapult used by Cao Liang was different, not only the stone bullet was sufficient, but also the range was long, and the destructive power was strong, just a few bombardments had already destroyed the surface structure of the city wall, if the Wei army continued to use the catapult to attack, it was only a matter of time before the city wall collapsed.

Cao Liang knew that if the infantry was used to attack the city, then the Wei army would inevitably pay a great price for casualties, because the enemy's strength was too far apart, even if the Wei army was fortunate enough to capture the city, it would also be counterattacked by the Huns.

Therefore, if you can use catapults to attack, you can greatly reduce the casualties of the infantry, so why not do it?

Anyway, the Wei army has plenty of ammunition, and Cao Liang doesn't care if it's wasted or not, so he doesn't believe it, tens of thousands of stone bullets are piled up like this, and they can't bombard an earthen city.

The Wei army used catapults to bombard indiscriminately for a day, and the entire city wall was attacked by many stone bullets, and it had already become full of holes.

The brick skin on the outside of the city wall had been completely destroyed at this moment, revealing the dirt layer inside, and the entire city wall was already in tatters and crumbling under the heavy bombardment of stone bullets.

It was getting late, and the Wei army Mingjin withdrew his troops and slowly retreated.

At this time, the Huns dared to show their heads, due to the continuous attack of the catapults, the dust flew in the sky, enveloping the entire city, the dust choked the Huns and coughed, they climbed up to the city with palpitations, and found that the Wei army had withdrawn, which was secretly relieved.

Liu Bao also climbed to the head of the city, including the city gate tower, all the buildings, have been destroyed by catapults, even the battlements on the city wall, few are intact, the entire city, everywhere is complete or broken stone bullets, rolling down to the ground.

The passages on the entire city wall were also smashed to unevenness, and those defensive facilities were almost completely destroyed, and the entire city was a mess.

This is nothing, Liu Bao stood on the edge of the city, leaned over and looked down, and couldn't help but gasp, my God, this city wall, I don't know how many stone bullets it has suffered, it has become full of holes.

The Wei army's catapult is too fierce, I haven't heard of the catapult having such great power before.

Liu Bao had seen the Wei army's catapult before, and it was much smaller than the catapult of the Pingbei Army under the city now, and the stone bullets thrown were small in size, and the power was not so great.

"Will the Wei people continue to use catapults to attack the city tomorrow?" Liu Jiao's heart palpitated.

Liu Meng was speechless, originally thought that the Wei army was just using catapults to fight the front, attack for a while, and will send infantry troops to attack the city, now it seems that he is completely wrong, the Wei army not only did not send infantry, just using catapults, it bombarded indiscriminately for a whole day, not only destroyed the walls of Jiuyuan, but even the soldiers in the city also suffered a lot of casualties.

As for whether the Wei army will continue to attack with catapults tomorrow, God knows.

However, Liu Bao took a closer look at the stone bullets scattered on the city, and said more firmly: "The Wei people have used catapults to attack for a day, and tomorrow will definitely be weak in follow-up, and they will not use catapults again." ”

Liu Jiao said suspiciously: "Why are you so sure?" ”

Liu Bao laughed and said: "You see these stone bullets, the size is the same, all of them are round, such stone bullets must be skilled craftsmen to carve by hand, but they can not be collected from the mountains and wilderness casually." The Wei people smashed at least a few thousand stone bullets today, such a well-made stone bullet, presumably they also have a limited inventory, and if they are used up today, they will definitely not be available tomorrow, so this king thinks that tomorrow the Wei people's attack will be mainly infantry, and we just need to take serious precautions. ”