Even if it is a concrete wall that cuts corners, it is very difficult to rely on manual labor to smash the whole whole.

If it's small, you can pick a corner to start with, and if you have an electric hammer, say something else.

Several people went into battle shirtless, tired and dressed roughly, and a quarter of an hour's work had only just smashed down a pit about a few centimeters in size.

It is known that the thickness of the wall in front of him is two steps, about one and a half meters.

At this rate, it would take at least three or four hours to smash through the wall, and it would take a day to smash a hole the size of a hole for people to enter and exit.

The wall that can be smashed through in a day doesn't seem to be much stronger.

But when looking at a thing, we can't just look at it from a certain angle, but we must look at it comprehensively.

On the battlefield, will the defenders watch them smash the wall without reacting?

This is obviously impossible, as long as there is a defender above to harass them, the speed of smashing the wall will increase exponentially.

As long as the defenders make reasonable arrangements, even if the other side keeps sending people to smash the wall, it will take at least five days to smash the wall.

The concrete wall is not a rammed earth wall, nor is it the kind of civil wall that is not even comparable to the rammed earth wall, and it is difficult to make the surrounding place collapse directly if it is a small hole, even if it rains.

Even if the other party has the patience to smash through this wall in five days, then just smash a hole the size of a person to get into, do you say he will enter or not?

Let's go in, you can only enter one by one, even if there are 100,000 troops outside the wall, the other party is not afraid, you only need to send two or three people with spears to guard here and you can be stuck.

When the time comes, a direct stab will be stabbed, and when the enemy wants to come in, he will have to think about how to clean up the corpse first.

The most important thing is that the Huns are not good at attacking cities at all.

Even if it was a rammed earth wall, the Huns had to scratch their heads anxiously when they saw it.

Nomads are notoriously bad at attacking fortified positions, but if not, are the city-states in the Western Regions fools?

As everyone knows, most of the height of the city walls of the Western Regions city-states is about one zhang, while the Central Plains is two or three zhang high, and there are also four or five zhang high city walls.

Not afraid of water, not afraid of fire.

If you have a castle built with this kind of thing, how long you can hold it depends on how much food you have in the city and how much you have in stock......

"Good! Great goodness! Touching the hole that had just been smashed out with his own hands, only some smashed dust had fallen on it, Liu Che applauded excitedly, and asked excitedly: "How much does this city wall cost?" ”

"If you compare it all with money, the cost is almost the same as that of a rammed earth wall, or even cheaper." Liu Ponu said with a determined face.

"Really?" Liu Che's eyes widened suddenly, if this is the case, then what kind of effort does the imperial court have to bother?

Wouldn't it be nice to hand over this job directly to Liu Ponu to deal with him?

The cost is cheap, the effect is good, and there is basically no need to maintain it in the later stage, where to find this kind of good thing?

"Of course it's true, but ......" The corners of Liu Ponu's mouth rose slightly, revealing a treacherous smile.

Liu Che, who was excited, was suddenly stunned.

Liu Ponu's shameless gesture he was already familiar with, and when Liu Ponu appeared in this tone, he realized that this kid must not have held back any good words.

Sure enough......

"Rammed earth walls need a lot of people, concrete walls also need a lot of people, the only difference is that they need to work in different places, sand and stone are easy to say, this thing is easy to find, everywhere, cement is a little limited."

"And cement and iron ore, are required to be mined, mining also needs to be processed to meet the standard, I said the cost is about the same, but the original used for digging soil, frying soil manpower used in digging sand, digging stones, digging limestone and firing this, from the cost of materials, the price difference is basically not big."

My Healing Game

"But the only disadvantage of this thing is that not every place where it is needed has lime mines around, and if you are lucky, you may have it more than 100 miles away, if it is like the grassland, then you may need to transport the fired cement from the Han mainland, so the cost is not fixed, it depends on the distance and the cost of transportation."

"Of course, there are benefits, as long as the materials are in place, it will really be built very quickly, a concrete city wall with a length of 100 steps, a width of 2 steps, and a height of 2 zhang, give me 200 people, and it will take less than a month to build him, and a city with a length and width of 500 steps, 5,000 people will be enough for two months at most." Liu Ponu said seriously.

It's not that he deliberately made it more difficult and made it more expensive, in fact he did.

Do you really think it's so easy to build a city on the steppe?

It was far more difficult than you think, and by the standards of later generations, even all the raw materials had to be transported from somewhere else.

The land on the grassland is relatively primitive, unable to accommodate large-tonnage vehicles to pass, and if you want to build a road normally, the cost is even more conceivable.

"You're sincere, aren't you?" Liu Che raised his hand angrily and was about to slap Liu Ponu, but he was witty and dodged.

It took so much effort to build the Great Wall, how did you ask me to transport so many materials to the grasslands?

Do you really think you can just find a car and fill it up and set off?

According to the weight of this thing, it is difficult to build a two-step city wall even if it is pulled by a hundred carts.

Liu Che felt more and more that this kid didn't seem to plan to do this at all, he was just playing with me......

"Conscience of heaven and earth, don't we all have to do things for the better? Building a city with concrete is definitely the best way, one wall is passed down for three generations, and people are still walking on the wall......" Liu Ponu put on an innocent expression.

"Uh-huh???" Liu Che glared at Liu Ponu viciously.

"Isn't it just when you put your shoes on to know if you wear them? Now I think this shoe is very good, but the price is too high to accept, there is something, there is a demand, and the problem has been found, and then refer to this problem to solve the problem, isn't it over? Liu Ponu looked at Liu Che angrily.

The resentment on his face seemed to say, at your level, are you embarrassed to be the emperor?

I really don't know how the Huns were defeated by you!

Oh, forgot, you sat in Chang'an and won by lying down......

"The transportation cost is high, then reduce the number of transportation on the line, the foundation is absolutely indispensable, otherwise one day because of the land subsidence city wall collapse directly on the big play, the top with bricks to make up the number, the outer layers of cement and sand mixed into the mud to paste, the inside is directly filled with soil, bricks can be burned on the spot, afraid of not being firm with concrete to hit the pillar, every other section to play a reinforcement to prevent cracking, so that the transported cement can be reduced by more than seventy."

"If you are still worried that it is not strong enough, then build a hollow wall directly with concrete, and then fill the wall directly with sand, and if he dares to dig sand, he will dare to bury him, and see, will there be a way to save money soon?" Liu Ponu said with a big grin, selling his tofu scum project seriously, and he said it so grandly.

If it is placed in the future life, as long as he dares to put forward this suggestion, he will definitely be sprayed to death.

But in the Han Dynasty, no one sprayed him on the cliff, and he had to applaud one by one.

The city wall is indeed very important in the Central Plains.

But on the grassland, even if it is just a city that is not ranked at all in the Central Plains, it can become a tall thing that will never be conquered.

Some people, some things, those are innate.

Let the Huns find a way to attack the city?

This is a bit of a problem for them, even if they have worked so hard to find the materials, where will the carpenters come from to build the siege equipment?

Relying on the ladder in the TV series?

If anyone really dares to attack the city with this thing, the defenders will be awakened by laughter in their dreams.

A real ladder is not just a ladder, it's a ladder truck.

The soldiers hid behind and pushed forward, and when they were in place, several pillars fell to the ground and stuck, and the defenders on the city wall couldn't push even half an inch with all their strength.

A single ladder cart rushed up to send people to the head, and it was accompanied by an arrow tower cart, which was a moving guard tower with good archery soldiers and cover.

This thing is built on the spot according to the height of the attacking city, the height of the ladder car should be just right, and the height of the arrow tower car should be about a zhang higher than the city wall, so that the view is the best, and it can support friendly troops to climb the city to the greatest extent.

Not to mention a crash or something, just such a set of equipment can blow up the Huns' heads.

What's more, there is no shortage of trees and craftsmen in the Central Plains, so these things are all disposable, and they are destroyed and thrown away after fighting.

It's hard to find the right tree on the grassland, so even if you do, you can't use it as a one-time thing.

And the advantage of nomads is speed, with these equipment, which is not much faster than turtles, what advantage do they have? Just wait to be slaughtered by the Han army.

Therefore, based on the current actual situation, the city on the grassland does not need to be built so tall and mighty, even if it is just a tofu scum project, it is still an existence that they cannot break through on the grassland.

Liu Che's plan for the military fort group did interest Liu Che, but he was also interested and told him that the price was too high.

The current imperial court can't afford these at all, and even Liu Che, who spends money like water, feels that he can't afford to consume this thing for the first time.

Liu Che squinted his eyes slightly, and looked at Liu Ponu with a smile in his eyes, only to see that this product had a proper profiteer attitude, his old face was horizontal, and he said shamelessly: "The price is still too high, you probably know what the situation of the court is now, say a Fang Yu that can be accepted by the court, don't always think about making money or something, that thing is useless to you......"