During the siege of the city a few days ago, when the siege spine was pushed toward the city gate, the roof was broken by a stone thrown from the city. If the Yellow Turbans didn't know how to fight, a pot of gold juice was brought down and kept.

The seven or eight people who pushed to attack the city were all dead.

Gold juice is a vicious weapon made of urine and feces. The boiling temperature is much higher than hot water. Even medical alcohol cannot save burns caused by gold juice. The skin will become ulcerated and infected, and it will be difficult for gods to save it.

The attacking part of the siege vertebra is a section of tree trunk, which uses the pendulum principle, which is the same principle as the wooden stake used to strike the bell in the temple.

When using the siege spine to hit the city gate, there is no need for soldiers to lift the wooden stakes. The soldiers swing up the tree trunks hanging under the siege spine, and the tree trunks can swing on their own like a pendulum and hit the city. The frequency is precise and the force is precise.

It is far more effective than simply holding a piece of wood and hitting the door.

Li Mengxi didn't have much idea about the strength of wood. He looked left and right around the siege spine, and he always felt that the thin roof made of finger-thick branches could not withstand the impact of a small millstone.

"Push the siege spine to the bottom of the city." Li Mengxi directed the carpenters.

The siege tower pushed down the tower.

Li Mengxi followed him back, and when he arrived at the city, he saw Liu Bei and glanced at Liu Bei's long arms that could touch his knees. Li Mengxi thought, there is a tool man.

Li Mengxi told Liu Bei his idea. He asked Liu Bei to find a big stone and move it from the city to the siege spine to see if the siege spine could withstand the impact.

That is to say, experiment, practice is the only criterion for testing whether a weapon works well or not.

Liu Bei thought about it carefully and thought this method was very good.

Liu Bei went down to the city and soon came back carrying a small millstone.

It is said to be a small millstone, but the stone millstone is about the size of a relatively large basin.

Liu Bei tilted his head, put the millstone on his shoulder, supported it with one hand, and came up from the stairs without blushing or out of breath with a steady gait.

Li Mengxi opened his mouth. Is it so easy to carry such a big millstone?

Liu Bei walked to the foot of the enemy tower calmly and shouted at the people at the siege spine below the city, "Get out of the way!"

The carpenters who were still staying at the siege spine hurried away.

Seeing Liu Bei raising the millstone above his head with both hands like a king lifting a cauldron.

Seeing Liu Bei lifting the millstone, Li Mengxi felt insecure. He was afraid that if Liu Bei let go, the millstone would fall off and hurt him, so he quietly stepped aside.

Liu Bei held the millstone high, trying to shoot downwards with both hands. He was not tired of holding it, and slowly adjusted the center of gravity of the millstone. He even aimed.

When Liu Bei felt that he had taken aim, Li Mengxi saw this guy with unusually long arms give a soft shout, and suddenly exerted force with his arms to throw the millstone out.

A loud clicking sound immediately came from the city. Li Mengxi hurriedly climbed up the battlements and looked down.

I saw the newly repaired siege vehicle parked four or five steps in front of the city gate. A big hole was made in the roof of the vehicle by a stone mill, and the stone mill was embedded in the siege spine.

Let's just say, the roof of the shed is still not good and cannot withstand a smash.

However, the siege spine was smashed into a bear-like shape. It turned out that only the roof was broken, and the car was still fine.

Also, Liu Xuande was a humanoid trebuchet. He had a basin-sized millstone in his hand, and it looked as easy as throwing it out like a sandbag.

"Bring up the millstone, push this siege truck away, and push the siege truck behind you to the front." Li Mengxi shouted down from the top of the city.

Below, two carpenters carried the millstone carefully to the watchtower. It looked like it was not heavy at all.

Repeating the same trick, Liu Bei raised the millstone and threw it at the second siege spine with a slight shout. There was a click. This time, Li Mengxi saw it. The siege spine was hit sideways by the millstone and hit the roof. Not to mention the roof cracked.

, the rope of the hanging wooden stake was also broken, and the wooden stake hit the ground with a thud.

The second siege vehicle was so smashed that it almost fell apart.

It seems that the two siege engines did not meet the expected quality.

"Push back the siege tower and build it anew.

Whichever team of you two builds the siege spine first and can avoid being smashed by the millstone will be rewarded with a pound of meat!"

Li Mengxi said loudly at the top of the city.

The carpenter battalion responded with a loud voice, and happily went back to build a new siege spine.

Li Mengxi asked the two teams to build the siege spine together in the morning. His purpose was revealed - he wanted to reward the carpenters, improve their intelligence and stimulate their creativity.

Li Mengxi really doesn't understand carpentry. If he did, he might be like tinkering with Zhuge Liannu, or he might be like a wooden cow and a horse.

Along with the siege spine, there was also a siege ladder.

"Xuan Degong, let's go see the siege ladder." Li Mengxi turned sideways and extended his hand to invite.

"Let's go." Liu Bei went happily.

The modification of the new siege ladder is very simple. It just adds a hook to the siege ladder to make it easier to hook on the city wall.

Although it is just a hook, although the structure is simple, the manufacturing difficulty is not small at all.

The city wall stacks are so thick that they are not easy to hook.

The new siege ladder was placed on the ground behind the moat. Li Mengxi and Liu Bei went down to take a closer look. When they saw the hook on the ladder, Li Mengxi was greatly surprised.

Li Mengxi thought that carpenters would use various methods to make a hook for the ladder, but he did not expect that the hook was made of wheels, and the wooden wheels were connected with four-part bent carts, dividing a complete wheel into two

, it happens to be two semicircles, and each semicircle happens to be a hook shape.

So simple and crude, it is also an effective wisdom.

Not surprisingly, the wheels and the front part of the ladder are neither tied with hemp rope nor nailed with nails, but are made of universal rivet structure, connected like building blocks.

This is so awesome, it can pick up anything, even all kinds of messy shapes.

In addition to city hooks made from scrap wheels, there are also straight hooks.

The straight hook is like a capital number 7. The hook is square and is made of square wood planed into a hook shape.

The wood processing skills of these carpenters were very powerful, which opened Li Mengxi's eyes.

A semicircular city hook or a square one. Which one is more useful? Of course I have to try it.

The sun had set, and Liu Bei sent all the country warriors back to camp. After training hard all day, Liu Bei gave each of them one catty of meat and two catties of grain as a reward.

Originally, Liu Bei wanted to enjoy the wine, but Li Mengxi said that the wine was useful and it was better to keep it.

All the country warriors had returned to camp, and only two people, Li Mengxi and Liu Bei, were left outside the city. Only two people could carry the siege ladder.

When Liu Bei lifted up one side of the siege ladder, Li Mengxi offered his hand, "Get off, Xi'er, I'll lift it myself."

As he spoke, Liu Bei turned the ladder over, squatted down, carried it on his shoulders and supported it with his hands, and lifted the siege ladder up.

The siege ladder was very heavy and had to be carried by many people during the siege. Although Liu Bei was weighed down by the ladder and couldn't straighten up, his gait was still steady and he was able to carry the ladder and continue walking.

Li Mengxi was already accustomed to Liu Bei's strength.

After a few steps, they reached the city wall. Liu Bei held the ladder with one hand and easily moved the siege ladder against the city wall.

Liu Bei was also used to farm work. He held the ladder skillfully and shook it. "It's secure." Liu Bei turned to Li Mengxi and said.

Firm, dialect, has the meaning of firmness.

Liu Bei climbed up the ladder to the top of the city, and Li Mengxi also climbed up the ladder.

Damn it, the steps are too wide. Li Mengxi has short legs and it is very inconvenient to climb. After climbing two steps, Li Mengxi gave up climbing and it was better to take the stairs.

Liu Bei said that after adding hooks to the siege ladder, it was indeed reliable.

When Li Mengxi arrived at the top of the city, he looked again and found that the semicircular wooden hooks could hang on the battlements, and because of the gravity of the ladder itself, it hung more firmly.

Liu Bei pushed the siege ladder with his hands at the top of the city. It was not easy to push it down. He had to lift the hook first before pushing it out.

Just such a small improvement can save the ladder from being pushed down a few times and reduce many casualties.

Liu Bei was very satisfied, not only with the improvement of the ladder, but also with the ability of the carpentry camp. Liu Bei was even more satisfied with the effectiveness of Li Mengxi's management of the carpenter camp.

If we had attacked the city that day, if we had thought of this earlier, we would have saved many lives.

I tried it on a ladder with a semi-circular hook and it worked very well.

Then I lifted the ladder with the square hook and hung it on the city wall. I found that the square hook was not only difficult to hang, but also very unstable after hanging it.

At the top of the city, Li Mengxi carefully compared the differences between the two configurations. He found that the problem was not that the square hook was too small, but that the square hook itself was not suitable for use as a siege ladder.

If it is a semicircular hook, the size can be made more casually. Due to the nature of a circle, the distance from any point on the circumference to the center of the circle is equal.

The round hook can be easily hung on the city head. Any point of the hook hung on the battlement can play a role in supporting the siege ladder.

As for the square hook, the size and angle must be strictly controlled. The battlement will be strongest when it is just diagonally stuck on the opposite corner of the square hook.
Chapter completed!