"What's that!"

Cao Jun stood on the arrow tower, looking at the gradually advancing return cannon on the plain ahead, and couldn't help but exclaim in surprise.

The Huihui cannon is a heavy trebuchet, because it was created by the Huihui people, so it was named Huihui cannon.

The Huihui cannon was created in the 13th century A.D. and shone in the historical Battle of Xiangyang in the Song and Yuan dynasties.

At that time, Xiangyang City was the first strong city in the world, the Yuan army besieged the city for five years, and still had no choice but to Xiangyang, and then the Yuan army transported back and forth artillery, and the first battle and conquered Fancheng, and made the return artillery to conquer Xiangyang.

The power of the return cannon can be imagined.

In this era, there are also trebuchets, such as Liu Ye, a strategist under Cao Cao, who is proficient in this way.

However, the trebuchet of this era was made on a different principle from the return cannon.

The trebuchet of this era was based on torsional force, while the manufacturing principle of the return cannon used the lever principle to generate throwing force.

The latter is improved on the basis of the torsion trebuchet, innovated, more powerful, more advanced, ordinary trebuchet can only put dozens of catties of stones at most, and the maximum weight of the return cannon has reached several hundred kilograms.

In the battle of Xiangyang in the Song and Yuan dynasties, the stone shells used by the Yuan soldiers weighed 150 kilograms, and this return cannon could not be the maximum weight, but the stones were too large and the soldiers were not convenient to carry, so the weight of the stone bullets was controlled within the range of 150 kilograms.

"What kind of trebuchet is this?" Looking at the return cannon advancing step by step in front of them, Zhang He and Cao Zhen's faces were also extremely solemn.

Cao Zhen vaguely saw the huge stones piled up on the carriage of the Shu army, and said in surprise: "They transport such a big stone, can this trebuchet shoot over?" ”

"If you can shoot it, you'll be killed!" Cao Jun has a trebuchet designed by Liu Ye, even if it is a boulder of dozens of catties, it is also very powerful, these years Cao Jun has conquered the east and west, and there are countless cities, and the credit of the trebuchet is not a few.

Zhang He knew that if such a big stone could shoot over, then this camp would definitely not be able to hold it, even Chang'an......

Zhang He shook his head and said, "Zidan, quickly send someone to Chang'an to inform King Wei, let him prepare early, if this stone can really shoot over, I'm afraid Chang'an will also ...... When hundreds of steps away from Chang'an City, the deep ditch and high fortress, piled up soil and mountains, in case the Shu army killed Chang'an, this trebuchet to attack Chang'an. ”

Cao Zhen nodded, and quickly sent a cavalry: "You hurry up and go to Chang'an, inform the King of Wei, and say that the Shu army has a trebuchet that can project hundreds of catties of boulders, let him prepare early!" The bombardment of such boulders is difficult for Chang'an to defend for a long time! ”

"Stop!" Wei Yan escorted the return cannon to a stop three hundred and fifty meters away from Cao's military camp.

Twenty return guns are lined up, each return cannon is separated by about ten meters, spanning 200 meters, facing the middle of the Cao military camp gate in front, if the stone is released, the fire can cover the distance of 200 meters in the middle of the Cao military camp gate, and the camp gate can be smashed in an instant.

The return cannon stopped, Wei Yan turned around, came to Zhuge Liang's side, and said, "Military advisor, is the return cannon here this time?" Don't take a few more steps? That's two hundred paces, can you shoot that far this time? ”

Zhuge Liang shook his feather fan lightly and said: "Don't worry, I tried it with Shizi when I was in Chengdu, and the return cannon can shoot two or three hundred steps, this distance is just enough to bombard the door of Cao's military camp!"

Zhao Yun, Lin Xiao, Zhang Fei, Huang Zhong, each of you led 3,000 warriors, and waited for a hundred and twenty steps away from Cao's camp.

Wei Yan, you will then advance the return cannon a hundred steps further and bombard the Cao soldiers in the camp! After the chaos of the Cao army, you led your troops to rush into the Cao army. The rest of the generals will lead their troops to surround the camp! ”

"No!" The generals will take the command.

Zhao Yun, Zhang Fei, Lin Xiao, and Huang Zhong each brought 3,000 warriors to Cao Ying's 120 steps away.

The rest of the generals led the army to surround Cao's battalion.

"Put!" As soon as Zhao Yun and the others arrived at the position ordered by Zhuge Liang, they heard a loud shout from Wei Yan in the rear.

Chirp tweet!

Everyone unconsciously looked behind them, only to see the boulders flying towards the sky under the action of trebuchets.

Some soldiers unconsciously hugged their heads, for fear that the boulders would not be strong enough and hit themselves.

However, their worries were unnecessary, and when the stone flew above their heads, it did not fall, but continued to fly towards the Cao army camp in front of them.

"Go down!" Zhang He and Cao Zhen were on an arrow tower, looking at the boulder in the sky flying straight in their direction, their faces changed in fright, and they hurriedly picked off the arrow tower.

As soon as the two of them jumped off the arrow tower, the boulder fell on the arrow tower, shattering the arrow tower to pieces.

Zhang He, Cao Zhen turned pale with fright, and hurriedly ran back.

The main general is still like this, not to mention those ordinary soldiers, looking at the flying boulders, those soldiers guarding the camp gate suddenly lost their weapons and ran towards the rear.

But how did they run past the boulders flying in the sky?

More than 20 huge boulders weighing hundreds of pounds fell from the sky.

Boom Boom!

It was as if the sky was falling apart.

The boulder fell and hit the camp, and the sturdy wooden fence was suddenly destroyed, and it was trapped on the arrow tower, and the tall arrow tower was suddenly torn apart and fell on the people, and the soldiers were instantly smashed into flesh......

After the boulder landed, it was embedded in the ground and reached a depth of several feet, which shows the power of the return cannon.

Although there are not many boulders that fall at one time, their power frightens the soldiers from stepping forward.

Seeing that the soldiers were fleeing backwards, Zhang He said angrily: "Hurry up and repair the camp, who dares to retreat!" ”

Chirp tweet!

As soon as Zhang He's words fell, he saw another huge boulder flying in the sky.

Boom Boom!

The first round of boulders fell differently, and only a few damaged the camp, that was because the Shu army used the return cannon for the first time and could not accurately control the distance, and this time the Shu army adjusted the distance.

One by one, the boulders hit the walls and wooden fences of the camp with unmistakable accuracy.

The bars were shattered by the blow.........

Cao Zhen gritted his teeth and said: "The Shu army has this trebuchet, our army camp is useless, if he is advancing the trebuchet and directly bombarding the soldiers, our army will definitely be in chaos."

When the Han army rushed over again, there were only more than 60,000 soldiers in our army, and my uncle was killed in battle, how could the enemy defeat the Shu army, it was better to abandon the camp and retreat, and go to the rear city to hold on, so that it could also buy time for the King of Wei. ”

Zhang He's face was gloomy and said, "Retreat without a fight?" If so, who will dare to confront the Shu army in the future? ”

Cao Zhen was embarrassed: "If you don't retreat, there will be little left of these soldiers and horses, and then the Shu army will drive straight into Chang'an, and the troops under the command of King Wei are insufficient and unprepared, how to resist the Shu army?" ”

Zhang He gritted his teeth and said, "That's the only way!" You immediately lead your troops to the east and retreat to Wugong County, and I will lead the army after 10,000 breaks! ”

"General, take care!" Cao Zhen arched his hand and said to the soldiers: "Take three days' rations immediately and retreat with me!" ”

And Zhang He led 10,000 horses to block behind the broken camp for Cao Zhen.

"Cao Jun saw that the camp couldn't hold it, and wanted to abandon the camp and escape!" Zhao Yun saw the situation of Cao Ying from a distance and said: "Let's advance quickly, let Wen Chang lead the return artillery to advance and bombard Cao Jun, don't let them run!" ”

Under the leadership of Zhao Yun and other generals, more than 10,000 Han troops immediately advanced and came to the gate of the camp to clean up the shattered camp gate that had been attacked.

Seeing this, Wei Yan in the rear immediately asked the soldiers to advance forward with the return cannon, and after advancing a hundred steps, he asked the soldiers to load the stone bullets and continue to bombard.