Li Mengxi saw that the steps were not broken.

Sure enough, the siege ladder was equipped with double steps, and the width of the ladder was shortened, which greatly enhanced the structural strength of the ladder.

When Guan Yu saw that the stone had not broken even a single step, he frowned.

Guan Yu lifted another stone as big as a watermelon, leaned out of the battlements, aimed at the bottom step of the siege ladder, and threw the stone down hard.

The stone was no longer blocked by the steps, and directly accelerated its fall. With a click, the bottom step of the siege ladder was broken into two pieces.

The siege ladder is the most important core part when attacking a city. In particular, Li Mengxi also knew that if a good siege ladder suddenly lacked one step, it would directly cause great trouble to the siegeers and create a huge gap.

I can't even climb the ladder fast enough.

Just now, the big stone rolled down from high, but the ladder did nothing. The small stone hit the bottom of the ladder, breaking the steps.

interesting……

Li Mengxi vaguely caught something.

Next to him, Guan Yu pointed directly, "Xi'er, wait and see," Guan Yu pointed to the broken steps at the bottom of the city, "I will throw the big stone first, and the big stone will roll down the stairs, and no one will be damaged. Then I will throw another small stone, and the stone will hit the bottom."

First level, the lowest level is bad.

From this, when a rock falls and hits the ladder, it is not only the weight of the stone, but also the method."

At the same time as Guan Yu said this, Li Mengxi also understood.

It’s gravitational potential energy! It’s kinetic energy!

Question: How can we cause maximum damage to the siege ladder by throwing rocks at it?

The answer is, hit the bottom step.

Because the city is several feet high, when the stone falls, the acceleration time is longer, and its kinetic energy is the greatest when it reaches the bottom.

Therefore, if a stone of a hundred kilograms is thrown at the first step in front of the battlements, it will be smashed continuously; if a stone of ten kilograms is thrown on the bottom step of the siege ladder, it will snap and break.

This is because the gravitational potential energy gives great kinetic energy to the falling stone. Secondly, when the stone is pushed down the ladder, the kinetic energy of the stone begins to decrease from the moment it hits the first step, and then the kinetic energy begins to decrease again when it hits the second step.

The process of the stone rolling down the ladder is actually a process in which kinetic energy is constantly consumed by resistance.

From this, Li Mengxi suddenly realized that there was a huge difference in destructive power between throwing the fallen rocks casually and throwing them in the right way.

The best way to use falling rocks is to throw them out and hit them on the steps at the bottom of the siege ladder.

The problem is here, ordinary soldiers do not have enough strength to throw stones far.

Li Mengxi thought of needing an auxiliary tool for throwing stones.

Trebuchet?

No, it's too big. Where can the trebuchet be placed on the city wall?

Placing the trebuchet behind the city wall? This is a usage. However, if the trebuchet is placed behind the city, the hit rate is too low. It is not as accurate as the soldiers on the city head holding the stones and smashing them down.

This chapter is not over yet, please click on the next page to continue reading! Or else, use the door panel to lift the stone on the door panel, and then, like using a seesaw, tilt the stone down.

This is a method.

Li Mengxi accidentally came up with the best tactic of smashing stones and smashing ladders. Smashing stones at the lower steps of the ladder can destroy the enemy's siege ladder to the greatest extent.

On the side, Guan Yu was also thinking about this tactic of smashing ladders. Guan Yu frowned slightly, looked down, and pondered, "It seems that the best time to smash rocks and smash ladders is only when the enemy has built ladders and is close to the city, but has not yet climbed the ladders.

.”

Li Mengxi was confused when he heard this and frowned, "Why is it before the enemy climbs the ladder?"

Guan Yu patiently explained, "It's because of people. After the enemy climbed up the ladder, he smashed the ladder at this time. Before the stone fell down the ladder, it fell on the enemy's shield first. The enemy's shield fell down, and the force of the falling stone was greatly reduced."

Furthermore, if the enemy is clinging to a long ladder, and there is no gap in the ladder cover, the stone will fall into the middle of the ladder and hit the enemy's body.

How can we destroy the ladder when there is an enemy blocking it?"

Guan Yu considered it from a practical perspective.

Li Mengxi suddenly realized, "Oh!" He widened his eyes and shouted.

people!

Unexpectedly, in the process of falling rocks and smashing the ladder, people, the siege soldiers, would actually become the external human armor of the siege ladder.

When the siege soldiers climbed up the ladder one after another, they covered the siege ladder completely. If the stone fell from the city head, it would inevitably hit the shield of the siege soldier.

If you think about it, you should know that when a person's hand receives a huge force, it retracts like a spring, buffering most of the force of falling rocks.

Furthermore, the human body is very soft and pliable. With the human body blocking it, it can almost be said that the possibility of falling rocks and breaking the stairs will plummet.

No wonder, so many ladders were broken during this siege. It turned out to be because there were few people on the ladders. Why were there so few people on the ladders? Because there were trenches, the speed of climbing the ladders was greatly affected.

The trench limits the siege soldiers' climbing speed. Because the ladder climbing speed is low, there are few people on the siege ladder. With so few people, a large section of the ladder is exposed. A large section of the ladder is exposed. As a result, rocks fall from the top of the city, and the ladder can easily be damaged.

, because there is no shield or siege fighter's body to buffer it.

This is actually a chain reaction.

If we had made arrangements for the trenches early this morning and deployed our manpower quickly, then the siege ladder would never have been damaged as much as two-fifths.

Guan Yu said that the best time to destroy the siege ladder with falling rocks is when the enemy's siege ladder has just reached the top of the city and people have not yet started to climb up. Li Mengxi agreed.

From this, the city defense technique can be obtained. The moment the enemy attacks the city with ladders, the city defenders should try their best to smash down the falling rocks with all their strength.

We also know the art of siege and know that the moment the siege ladder is set up is when the protection of the siege ladder is the most vulnerable. Therefore, once the ladder is set up, you must climb it up as quickly as possible so that the defense of the siege ladder is neutral.

The shorter the time, the less likely the ladder is to be damaged. If the ladder is not damaged, the siege team will be more stable.

Furthermore, when climbing a ladder, it is better to squeeze one person on the ladder than wait for one person below. It is best to cover the ladder fully. The siege warriors themselves are an excellent protective layer for the siege ladder.

New equipment was made today, in addition to siege ladders, there are also moat bridges.

Li Mengxi believed that it would be best to cover the trenches and turn them into flat ground.

This was not the case with Guan Yu. Guan Yu pointed to the trench bridge and pointed out the shortcomings, "The trench bridge should not be too dense. You see, we just dropped four or five falling rocks, and the falling rocks slid down the slope and landed on the trench ladder."

A trench bridge with four or five big stones can still pass through it, but if there are more than ten or twenty stones, all the falling rocks will pile up on the trench bridge, and sooner or later the trench bridge will be crushed.

Even if there are continuous trenches and bridges, it would be wrong to block the bridge head with stones and block our attackers.

Therefore, it does not matter whether three or five trench bridges are combined, but gaps must be left to push down large rocks."

After all, Guan Yu had rich experience. When Li Mengxi looked at the falling rocks, he could only see them rolling down.

When Guan Yu looked at the falling rocks, he could see that they would pile up and crush the trench bridge. After all, Guan Yu was more familiar with rocks and had seen many bridges being crushed, so he could go deeper than Li Mengxi thought.

Li Mengxi understood what Guan Yu said. The key word was one word - obstacle removal.

Nanhe City has a clever structure. When they attacked the city, the rebels suffered a big loss. Fortunately, the city was difficult to attack, so it was better for the rebels.

Just like now, if there wasn't a steep slope under Nanhe City, and the stones would continue to roll for a long distance after falling, then the stones would not be piled on the trench bridge, and no one would realize that the trench bridge might be destroyed by countless falling rocks.

Press and break.

Therefore, we cannot realize this. If we attack the city one day and encounter a steep slope below the city, our army will build trench bridges one after another to fill the trenches.

Then disaster struck. Rocks fell like rain from the enemy's city wall. The rocks rolled down the slope one after another, and they all fell on the trench bridge.

At this time, the trench bridges were too close together, and there was no gap to remove the stones. We could only watch as the stones piled up, crushing the trench bridges.

This time, our offensive was interrupted midway, which was very bad.

Fortunately, Nanhe City was dangerous, and the rebels suffered enough hardships under the city, and fortunately learned enough lessons.

If the rebels know to leave a gap between the trench bridges next time when they encounter the city, then the enemy's stones can be rolled onto the trench bridges, and the siege soldiers can push the stones directly into the ditch with a little push.

At this time, the enemy's trenches became an aid to us in clearing obstacles.

The trench bridge cannot be arranged to be airtight, and gaps must be left.

Li Mengxi is good at thinking conversely. He has learned how to use trench bridges when attacking a city. But if the enemy builds a trench bridge to defend a city, how should I destroy the enemy's trench bridge?

What Li Mengxi thought of was to use fire.

"Use tung oil. However, tung oil is rare, so it's a bit troublesome." Li Mengxi frowned.

If there is enough tung oil, but also some stone bows and arrows, just pour the tung oil barrel after barrel, and let the city be burned with fire for a month without stopping, then no one will be able to capture the city.

Li Mengxi said that tung oil was difficult to find, but Guan Yu said, "It is not necessary to use tung oil. You can also use firewood to burn down the enemy's trench bridges."

Seeing that Li Mengxi was still a little confused, Guan Yu continued, "Wheat straw, bundle the wheat straw, light it on fire, and throw it down the city. Once the wheat straw fire becomes big, the ladder will catch on soon."

As a modern man, Li Mengxi could not fully understand everything in the late Han Dynasty.

To set a fire, Li Mengxi first thought of fire oil, then tung oil, and even alcohol. However, he failed to remember that the common method of lighting fires in the late Han Dynasty was to use firewood.

Li Mengxi immediately realized that he had made the problem complicated.

But no, just lighting a fire with firewood is enough.

Thinking of firewood, Li Mengxi remembered that firewood does not burn violently enough, but when there is enough firewood, and when there are as many firewood piled together as a pile of wheat straw, the fire will not be extinguished even if it is thrown.

At this time, let alone the wet mud on the trench bridge as a fireproof layer, even if the trench bridge was made of wet wood, it would still be set on fire.

A pile of wheat straw has enough firewood to burn down a trench bridge.

The amount of firewood for a wheat straw pile is only thirty or forty bundles of firewood.
To be continued...