"What is it?" Hearing this, Cao Cao's interest was piqued, and a look of anticipation appeared on his face.
"Yixuan, hahaha, you're really my lucky star!”
No matter what method it was, he would praise it first. Anyway, Xu Zhen would not disappoint.
Cao Ren said worriedly," However, if we ask for it now, I'm afraid that Liu Bei will immediately know that we have the intention to retreat. This person is not an ordinary person."”
During the 18th Alliance Army, Cao Cao personally brought Liu Bei to the alliance meeting ground, Suanzao. Otherwise, he wouldn't have been able to enter, and there wouldn't have been three heroes fighting against Lu Bu.
So at that time, Cao Cao had already started to let Cao Ren and the three Liu brothers come into contact. He had originally planned to take them under his wing, but he realized that Liu Bei was not someone who could be subservient to others.
Cao Ren had also praised his two sworn brothers for being peerless heroes.
"Of course, but it'll be easier if he takes the initiative to sue for peace.”
Xu Zhen said with a smile.
Cao Cao and Cao Ren looked at each other, not knowing what Xu Zhen was up to.
"Then what is it? Aiya, Yixuan, tell me quickly!" Cao Ren scratched his ears and cheeks anxiously. He wasn't as calm as Cao Cao, so he wanted to know.
Cao Cao's mentality was very stable, because he knew how to make Liu Bei retreat by himself.
If he could show his ability to take Xiapi at all costs, Liu Bei would probably be afraid. After all, he did not want to see Xiapi fall…He still wanted to get a place to stay.
However, if he wanted to attack Xiapi now, Cao Cao would have to pay a price. Thus, he was also looking forward to what trump card Xu Zhen would use.
……
A few days later, when Yuan Cao was locked in a stalemate at Guandu, Yuan Shao's army would use a large siege weapon, Gaolu, to make Cao Cao suffer a lot. Even the camp was not safe after being shot by tens of thousands of arrows.
Then Liu Ye offered a plan to break Gao Lu with a catapult.
The Romance of the Three Kingdoms did not actually mention that it was invented by Liu Ye.
Later on, Ma Jun improved it and perfected it.
However, it didn't matter whether he mentioned it or not. Now, it was all Xu Zhen's things.
……
After a few days of peace and quiet in the camp, Xu Zhen found a pair of craftsmen and many warriors led by Dian Wei. They went up the mountain to cut wood day and night.
There were twenty-three old carpenters and fifty skilled blacksmiths. Under Xu Zhen's command, they made a brand-new catapult. According to a certain principle called " parabola," they also measured the angle and distance.
This skill…was quickly spread throughout the entire army.
When it reached Cao Cao's ears, it was simply shocking.
"Catapults? He even improved the catapult... My God..."
Cao Cao leaned against the back of his chair with a look of disbelief on his face. He felt that all of this was unreal, as if it shouldn't have happened in front of his eyes.
Xu Zhen could modify the catapult?
"Let's go! Let's see how it can be improved!？”
In the middle of the night, Cao Cao put on a robe and casually walked out of the camp. Soon, he saw that the soldiers were all gathered in the middle of the camp, and a huge catapult came into view.
First, there was a huge base with a basket with a weight at the front and a throwing rod that was more than ten meters long.
He lowered the throwing rod with a weight, placed a huge rock on it, tied a rope, and then adjusted the angle with the gear. It could be launched hundreds of meters away.
Xu Zhen stood in front of the trebuchet that was more than ten meters tall and repeatedly checked it. He nodded repeatedly after almost checking everything.
"Yes, it's almost done. It's a ballista that uses the lever principle.”
Dian Wei clapped his hands, and the muscles on his body bulged a few times. He scratched his head and asked,"Milord, this thing is too heavy. Even with this wooden wheel, it would still take more than twenty people to push it.”
It would be awkward if such a big fellow was not powerful enough.
"Sir, what is this called? Is it a catapult?"
"Is this an improvement from Spring and Autumn?”
"Lord Xu Zhen, how do you know everything? And so brave! You can be our general!"
"That's right! If you lead the army, you will definitely be invincible!”
Xu Zhen waved his hand." No, no. Leading this…really hurts the body."”
Then, he turned to Dian Wei and said," There's nothing we can do about it. That's how destructive engineering weapons are. Fortunately, this is a unique product. It can't be mass-produced for the time being. Moreover, the workmanship is relatively rough. I don't know how many times it can be used.”
As soon as he finished speaking, Xu Zhen heard Cao Cao's voice.
"Yixuan! Aiyo, Yixuan, is this the surprise you gave me?”
Cao Cao raised his head and looked at this big guy. He hadn't come out much recently and had been in the front camp of the central army. He hadn't noticed that there was such a big movement in the rear camp near the supply camp.
"This is a catapult?"
Xu Zhen nodded." This should be called the Hui Hui Cannon. In short, it's a very powerful offensive and defensive weapon. It's effective in both defending and attacking cities."”
"Dian Wei, go and try it tonight!"
"Alright! Leave it to me, my lord!" Dian Wei rubbed his fists excitedly.
To put it bluntly, this round of artillery was actually a huge catapult that hit huge boulders.
After Cao Cao heard the theory, he held Xu Zhen's hand excitedly and clicked his tongue in wonder." It's said that the Yellow Emperor and Chiyou fought in ancient times and could not be defeated. God sent the Nine Heavenly Maiden to help!!”
" Yixuan, you are my Nine Heavens-"
" Stop, stop, stop..." Xu Zhen quickly raised his hand. If he continued, something would go wrong.
Looking at the catapult carefully, how big could the stones be?
According to the historical records, this scale was 150 pounds. If it could be achieved, just imagine a 150 pounds boulder being thrown to a height of 10 to 20 meters and then falling. The momentum it obtained was enough to make the enemy suffer.
Xu Zhen remembered that there was a record in the history of the Yuan Dynasty that this kind of stone could sink seven feet into the ground. It could be seen how powerful it was.
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