Under the containment of Yuan Tan, Wang Yu quickly captured Liyang, and Ji Ling was killed by Long Er, who was the deputy general, in the chaos of the army.

The engineering battalion quickly docked and began to lay the railway as soon as possible, and the follow-up materials were also transported to Liyang on the south bank one after another through the naval army, and hoarded. On the second day, the royal department of the royal department slaughtered Yecheng in a mighty way.

At the same time, in the Tiger Prison Pass, Chen Heng's siege camp has already set up the thunderbolt cannon. Ten heavy catapults were ready to be thrown, and the stone projectiles were put into place one after another.

The soldiers had already woken up in their sleep, and many of the old soldiers had become accustomed to these strong winds and waves, and they slept fairly peacefully. Some of the recruits were a little frightened, tossing and turning all night and couldn't sleep.

"Prepare for the enemy surprise attack, and the siege camp begins to throw stones!" Seeing that the soldiers had been assembled, Li Ming officially gave the order. As the order was given, the soldiers were also getting ready.

"Stone-throwing!" Chen Heng shouted, and the Thunderbolt Cannon immediately conducted its first test firing at Tiger Prison Pass. However, for the siege camp, there is actually no need for test firing, and they already know where the specific landing point is.

Under the requirements of assembly line and standardization, the damaged parts can be replaced immediately, and the cost of production is reduced, so Chen Heng did not let them contact the stone, and even stipulated how many stones must be thrown a day to end the training. For the soldiers of the siege camp, whether it is an eight-ox crossbow or a catapult, it is something that has been played by them. Many soldiers now see the eight-ox crossbow and catapult, and they will feel a little like vomiting, they are really trained hard.

The stones were quickly thrown towards the city wall, and the soldiers did not choose the city gate, after all, according to the instructions above, this level was to be destroyed, so there was no need to waste time on the city gate.

They had long been aiming at the weakest part of the city wall, and I remember that when they were training before, Li Ming even asked people to build a lot of structures similar to the city wall, and let them smash them to see where they were easier to collapse.

The stone bullet smashed directly on the city wall, and the continuous bombardment made the city wall continue to wail. Looking at the trembling but helpless enemy soldiers on the city wall, the soldiers of the siege camp, I only felt a sense of breath...... It seems that the sins suffered these days have not been in vain.

"Second round of stone-throwing, ready!" Chen Heng nodded, watching from the side for a long time, he knew very well that the soldiers of the siege camp had smashed the stone bullets in the most ideal place. But he didn't praise them, lest they be proud, but gave a silent order.

The slinging arm was quickly bent, and immediately a soldier loaded the slinging bag with stone projectiles. The soldiers made a final arrangement for the angle of projection, and then with Chen Heng's order, the stone bullet was fired again.

What is amazing is that the landing point of the second time is exactly the same as the first one, and there is not even a little deviation.

After withstanding several bombardments in a row, cracks finally appeared in the originally strong city wall, but at the angle on the city wall, apparently unnoticed. However, Chen Heng, who already has an artifact like a telescope, can see it clearly.

"Very good, prepare for the third stone throwing, give me a breath to collapse the tiger prison!" Chen Heng nodded, turned around and shouted.

"Whoa!" The soldiers were immediately full of enthusiasm and quickly began to prepare for the third stone throwing. You must know that in daily training, it is not easy to get Chen Heng's praise.

"Your Majesty, we have to get down the walls...... Not right! Shen Ye suddenly realized something and hurriedly shouted. Liu Ting was stunned for a moment when he heard this, and then went down to the city tower under the cover of the pro-guard army.

"The third stone, the projection!" Chen Heng gave the order for the third time, and the thunderbolt cannon was projected for the third time. The three landing points were exactly the same, and the city wall, which had already cracked, really couldn't support it anymore this time, and a large piece of wall bricks and three-layer soil was smashed down.

"Do it again, destroy it completely!" Chen Heng had already seen that the entire Tiger Prison Pass was already crumbling, and he immediately turned around and shouted again, and the soldiers below did not dare to slack off, and quickly began to prepare.

"Whole army, prepare for a surprise attack!" Li Ming shouted, Lu Bu, Zhang Liao, and Zhang Mo were ready for a surprise attack.

"Fourth Stone, Throw!" Chen Heng gave the order for the fourth time, and the thunderbolt cannon was projected for the fourth time. This time, the landing point was still exactly the same as before, and the stone projectile was directly embedded in the earthen wall, kicking up a cloud of dust.

Even if the Tiger Prison Pass is second only to Hangu Pass, it can't bear it at this moment and collapses violently. Fortunately, Liu Ting, at the suggestion of Shen Ye, quickly went down the city wall, otherwise it is difficult to say what would have happened.

"It's hard to imagine that although the Tiger Prison Pass is not the first Xiongguan in the world like Hangu Pass, it also took a lot of effort to build it by the Han Dynasty...... In the past, this Xiongguan blocked the princes who crusaded against Dong Zhuo, but I didn't expect it to be so vulnerable now! Liu Ting covered his mouth and nose, and now with the collapse of the Tiger Prison, hundreds of meters around him were shrouded in dust.

"Now...... Ahem...... The biggest problem is that they have such a siege weapon, and they are afraid that Hangu Pass, and even Chang'an City will be difficult to resist...... Ahem...... In the future, we will either build stronger walls, or we will probably only be able to destroy their siege engines before they can be used...... Ahem! Shen Ye said while coughing.

At this moment, don't say it's Liu Ting, Lu Bu, who is watching everything happen from the sidelines, has a very complicated mood.

"Your Majesty, why don't you allocate a batch of such catapults to your ministers?" Lu Bu complained directly, if he had such a configuration in the past, the tiger prison or something could be killed directly, and he still needed to retreat because of the crossbows on the opponent's city wall?

"General Lu......" Zhang Mo knew that the atmosphere was awkward, and hurriedly stepped forward, "The thunderbolt cannon was only developed at the beginning of this year, and it was first equipped for the siege camp to operate skillfully, and there was also a test to see if there was anything that could be improved and perfected. It was not finalized until last month, because the units were not equipped. ”

"Hmph......" Lu Bu didn't say anything when he heard this, but he never had a good look at Zhang Mo.

"Your Majesty, the Tiger Prison Pass has collapsed, do you want to continue to throw stones into the pass?" Chen Heng stepped forward and asked.

"Go on, three rounds of stone throwing, I'll see if they're going to be quails, or if they're going to come over!" Li Ming said with interest, the tiger prison is gone, and he wants to see how Liu Ting and the others plan to defend.

I have to say that this collapsed ruin is still an obstacle, but compared to the previous height, this obstacle is really nothing, at most it is not convenient for cavalry to raid.

"Whoa!" Chen Heng didn't talk nonsense, and immediately turned back to arrange, and the soldiers got the order and immediately began to adjust the angle.

"Projection!" Chen Heng shouted, and the stone bullet smashed out again. The difference was that the pumpkin-sized stone bullets used before were now fist-sized stones, and ten catapults threw these stones, which suddenly turned into a meteor shower and smashed directly into the enemy position.

There was no movement on the other side of the bombardment three times in a row, and Li Ming originally thought that Liu Ting had already taken people away. Unexpectedly, when the dust settled, the earthen walls were exposed. Liu Ting actually used jade talismans to directly create several earthen walls, just to block and avoid the stones falling from the sky, this behavior can be completely summed up as 'luxury'.