Liu Yin took the lazy craftsman and the "stone" that couldn't be broken no matter how much he smashed it, and after showing it to Chen Zhi, Chen Zhi knew Liu Yin's thoughts.

There is no way to build the first few walled cities, at least the central walled city connecting the four sides and the three camps near the rear are built with this kind of "stone slab", so that you don't have to be afraid of Guo Huai's thunderbolt.

The stone slab that can't be broken by the hammer, if the stone thrown by your thunderbolt can be broken, then we will admit that this ramp can't be held.

Chen Zhi commanded the soldiers to hold on to the front to buy time for Liu Yin, and Liu Yin led all the craftsmen to work hard to build these "stone slabs" and seize the time to build the central walled city.

This central walled city is not only the base camp of Chen Zhi's army, but also because it is located in the middle of the mountain road, not only can connect the camps of the Quartet, but also can block the Cao army on the mountain road.

At this time, the rapid setting advantage of cement is vividly revealed.

Chen Zhi had only been holding on to the front for nearly ten days, and Liu Yin had already led the craftsmen and soldiers to strengthen the central camp from the inside out.

In particular, the outer defensive walls are all made of cement "stones" with bamboo tendons, and at first glance you think this is a castle.

And when Chen Zhi retreated to the central camp, Guo Huai led his troops to catch up, and Guo Huai also wondered.

On the information given by the detailed work, it seems that there is no mention of the city at the Baochuan crossing?!

When did this "city" come out?!

After taking a closer look at this "city", Guo Huai found that something was wrong.

If you want to say it's a city, it's a little too small.

If you want to say that it is Wu Fort, it is a bit big, and the city walls are not as high as Wu Fort.

But if you want to say that it is an earthen city or a camp, have you ever seen a camp or a tucheng that built a city wall out of stone so extravagantly?!

But no matter what it was, Guo Huai still decided to launch a siege.

And then bar. Guo Huai was proud of the thunderbolt, and he was stunned that there was no way to take the city wall in front of him.

That's really not going to be smashed.

No one has to go out of the city to burn your thunderbolt, it's just a posture that you can smash casually.

And Cao Jun's more than 30 thunderbolt cars, which continued to be smashed from morning to night, Guo Huai saw dense white spots on the city wall, and Leng did not see any signs of loosening of the city wall.

Even the most infuriating thing is that after Guo Huai's attack was ineffective for a day, he temporarily returned to the camp to take a break, and when he led the troops again the next day, he unexpectedly found that this city wall seemed to be a foot higher. What kind of demon is this?!

Guo Huai was suspicious, he didn't dare to continue the siege of the city, and after sending people to monitor the "city", he temporarily suspended his troops to observe. As a result, Guo Huai saw that the Shu thieves in the city actually used one "stone slab" after another to raise the city wall in front of him.

The city wall can still be made?!

This somewhat ruined Guo Huai's three views, but it was not enough for Guo Huai to retreat.

After all, how strong can the walls you have built be?!

Guo Huai scoffed at this, and continued to attack the city on the third day.

Then Guo Huai was completely confused.

The stones thrown by the thunderbolt are still somewhat useful when they are smashed on the newly built city wall above, and the city wall that can be smashed will cause some turmoil, but if it is smashed on the city wall made in heaven in front of the bottom, it is no different from smashing on the real city wall.

Guo Huai suddenly gasped. The Shu thieves were able to build a new city wall in two days?!

What kind of demon is this?!

Well, even if it's not a demon law, with the speed of building a city wall like a Shu thief, it's not a difficult task to build a new city at the Baochuan crossing, right?!

How can this battle be fought?!

If he can't break through the "city" in front of him, Guo Huai will not be able to continue to advance, let alone recapture the Baochuan crossing.

But if you want to break through the city wall in two days, you can build a one-foot high wall, especially if you give me ten times the thunderbolt, I can't beat the speed of other people's construction.

Guo Huai was uncomfortable, and hurriedly wrote a letter to inform Cao Ren, who was recuperating in Chang'an, about the current real situation. As a result, he was scolded by Cao Ren for splitting his head and covering his face.

See for yourself, is there a sentence in your letter that is human?!

When Emperor Wu fought against Ma Chao and Han Sui in Tongguan, he did rely on the ice and snow in winter and the cold weather to build the city overnight. But it's early summer.

Two days to raise the city wall, or the stone city wall, do you Guo Huai think I'm old and confused? !

Guo Huai's letter, Cao Ren didn't believe it at all, not only didn't believe it, but also scolded Guo Huai, telling Guo Huai to hurry up and enter the army, don't give the Shu thief time to react.

Ke Guo Huai. Guo Huai is really going to scold his mother.

It's incredible, and I can't believe it. But that's true!!

Guo Huai had no choice, so he sent a thunderbolt to continue smashing the city wall, and on the other hand, he tried to find out what was going on in the city and how the Shu thieves managed to build a one-zhang high city wall in two days.

In these days, although there are also regulations on espionage and secrecy, people's ideological consciousness in these years is not so high. Although he paid some price, Guo Huai still got some cement and figured out how the Shu thieves were able to build a one-zhang high city wall in two days.

Guo Huai watched the craftsman just toss for a while, and then easily glued the two stone slabs together, and in the afternoon, the cement was dry, and the two stone slabs had to be smashed hard to barely separate, and suddenly everything was understood.

If I had this thing in my hand, I would be able to build a one-foot high wall in two days.

this thing. The most important weapon of the country.

Guo Huai hurriedly ordered people to send these cements to the rear, and at the same time began to arrange the fine work, be sure to get the formula of this kind of thing, if this thing is in the hands of Great Wei, with the strength of Great Wei, it is completely possible to build a complete Great Wall in Guanzhong to guard against the Shu army.

And when Cao Ren saw the cement thing and understood that what Guo Huai said was true, he immediately understood that his battle plan to recapture the Baochuan crossing was completely ruined.

Cao Ren only felt a resentment in his heart, unable to express it, held back a mouthful of old blood, and lay down again.

This lay, Cao Ren's condition is even more serious.

But no matter how serious his condition is, Cao Ren still can't rest like this, he must respond to the current situation in time.

They are all generals who have been in battle for a long time, and it is impossible not to realize the importance of cement, and Cao Ren also wants to grasp the secret recipe of cement as soon as possible.

Now it doesn't matter whether you can recapture the ramp crossing, the really important thing is to figure out how these magical powders are made.

For this matter, Cao Ren dragged the sick body and ordered Guo Huai to withdraw his troops, not to attack the Shu thieves for the time being, and at the same time ordered to use all the fine work in Shu to get this cement formula at all costs.

The wind rises in Longxi, and Longxi is no longer in Cao Wei's hands, but when the wind rises in Chang'an, it must be done.

And this is the last thing Cao Ren did for the sake of Dawei before he died.

With Cao Ren's death, Guo Huai retreated and returned to Chang'an, and Chen finally breathed a sigh of relief when he arrived here, and hurriedly ordered Liu Yin to step up the construction of all the camps, and build them into what Zhang Xi saw when he arrived at the Baochuan crossing.

Liu Yin agreed to this matter, and at the same time did not forget to remind Chen Dao. It is better to grasp the cement thing in the army for the time being.

If this thing were to be placed in place, I really don't know what would happen.

If it weren't for the lack of positions, Liu Yin would have liked to play the imperial court, and let them hurry up and take a good look at the cement secret recipe, and they must not leak out.

This is why Chen Zhi ordered the suspension of the construction of the Baochuan Mountain Road and concentrated all the cement at the Baochuan crossing.

Zhang Xi was also a little dumbfounded after learning what happened during this time.

Neither worried about Cao Jun's sudden attack, nor lamenting Liu Yin's calm and resourceful He was surprised that in these years, there are already people who know how to use cement to make bamboo reinforced concrete and prefabricated slabs!!

That's it. Are you really going to fight World War II?!

At the same time, Zhang Xi can now understand why Chen Zhi ordered not to build the Baoxie Mountain Road, but instead transported all the cement to the military camp at the Baoxie Road crossing, and also recognized Liu Yin's worries.

But this matter, I really don't need to be reminded by Liu Yin.

Zhang Xi is also a person who has experienced a lot of things, and he is not so stupid and sweet, so when he inspected Qiqi County and instructed Ma Zhong to build a cement yard, he ordered Ma Zhong that all the craftsmen and soldiers in the cement yard should be arranged separately and given the best treatment, but circulation was strictly prohibited, and family members were not allowed to leave the local area.

As for the cement yard, it is directly under military control, and no one is allowed to enter or leave the cement yard without a warrant from the guard.

And after Zhang Xi reported this matter to Zhuge Liang and Liu Bei, these two were even more ruthless, and directly ordered Ma Zhong to personally supervise the cement yard, giving Ma Zhong the right to cut first and then play in the affairs of the cement yard, and anything about the cement yard, Ma Zhong can directly report to Zhuge Liang or Liu Bei, and others have no right to interfere.

After Liu Bei became emperor, the cement yard was directly assigned to the royal industry, and Ma Zhong in addition to the official position of the Taishou of the Yellow Gate, Ma Zhong also added the title of Huangmen squire, and he was already a member of the royal family.

It can be seen that Liu Bei and Zhuge Liang's attention to cement, whether it is a formula or a craftsman, cannot flow out easily.

As for the cement thing, this can't avoid the outflow, even if the control is strict, people in these years don't have any national concept, and the moral level is uneven, and some people can really do anything for the sake of glory and wealth.

And this point, in fact, Zhang Xi and Zhuge Liang have also considered it, and there is no intention to strengthen control.

Because the technical level of this era is not enough, Zhang Xi is a half-hanger in this regard, so the cement that can be made in this era can probably be maintained for three months, and the cement that is not used for more than three months will slowly harden, and the effect of being used as a binder will be greatly reduced, and it is not as good as the glutinous rice mortar commonly used now.

And from the production of cement from Qiqi County, transported to the Baochuan crossing, at least it will take more than a month, if it is transported to Liangzhou, it will take about two months If you transport it to Hebei, it will not wait for it to arrive, it has already formed a lump, and it cannot be used at all.

Therefore, Zhang Xi is really not afraid of the outflow of cement products, as long as the formula and craftsmen do not outflow.

On the contrary, Zhang Xi is more concerned about . Even if Chen Zhi concentrated all the cement in Hanzhong into the army out of secrecy considerations, there should be a lot left after the construction of these camps and fortresses, right?!

Why don't you use it to build a mountain road?!

You must know that the wider the mountain road of the Bao Slope Road, the more convenient it is to transport supplies, and the more beneficial it is for Chen Zhi to stick to the Bao Slope Crossing.

And on the subject. Still Liu Yin stood up and gave Zhang Xi an answer.

(End of chapter)