Liu Yin took the lazy craftsman and the "stone" that could not be broken no matter how hard he smashed them, and showed them to Chen Dao. Chen Dao knew what Liu Yin was thinking.
There is nothing we can do about the several fortresses in front. At least the central fortress connecting the four directions and the three barracks near the rear should be built with this kind of "stone slab", so that there is no need to fear Guo Huai's thunderous chariot.
If the stones thrown by your thunderbolt car can break the stone slabs that cannot be broken by a hammer, then we will admit that the Baoxian Road cannot be defended.
Chen Dao commanded his soldiers to stick to the front and buy Liu Yin time, while Liu Yin led all the craftsmen to work hard to build these "slates" and seize the time to build the central walled city.
This central city is not only the base camp of Chen Dao's army, but also because it is located in the middle of the mountain road. It can not only connect the camps in all directions, but also block Cao's army on the mountain road. If Guo Huai cannot attack this Chinese army camp, They simply didn't dare to take a detour to attack the camp in the rear.
At this time, the advantages of cement's rapid setting are fully apparent.
Chen Dao only stayed at the front for nearly ten days, and Liu Yin had already led the craftsmen and soldiers to reinforce the central camp from the inside out.
Especially the outer defensive walls are all made of cement "stones" with bamboo reinforcements. This circle is surrounded by a wall. At first glance, I thought it was a city.
When Chen Dao retreated to the central camp and Guo Huai led his troops to catch up, Guo Huai was also puzzled.
In the information given by Xizuo, it seems that there is no mention of the city at the entrance of Baoxie Road? !
When did this “city” appear? !
After taking a closer look at this "city", Guo Huai found that something was wrong.
You could call it a city, but it's a bit too small.
You might say it is Uburg, but it is a bit big and the city wall is not as high as Uburg.
But let’s talk about Tucheng or Yingzhai. Have you ever seen any Yingzhai or Tucheng that built walls with stones so extravagantly? !
But no matter what it was, Guo Huai decided to launch an siege.
Then, Guo Huai is proud of his thunder car, but he can't do anything about the city wall in front of him.
It really can't be smashed.
People don't even have to go out of town to burn your Thunderbolt car, they just look like you can smash it casually.
However, Cao Jun's more than 30 Thunderbolt Chariots continued to attack from morning to night. Apart from seeing dense white spots on the city wall, Guo Huai did not see any signs of loosening of the city wall.
Even the most annoying thing is that after Guo Huai's attack for a day was ineffective, he temporarily returned to the camp to rest. When he led his troops to fight again the next day, he unexpectedly discovered that the city wall seemed to be one foot taller. What kind of magic is this? ? !
Guo Huai was so suspicious that he did not dare to continue the attack on the city. After sending people to monitor the "city", he temporarily suspended his troops for observation. As a result, Guo Huai saw that the Shu thieves in the city were actually using piece after piece in front of him. "Slate", the city wall is constantly being raised.
Can a city wall be built now? !
This somewhat ruined Guo Huai's outlook on life, but it didn't make Guo Huai retreat.
After all, how strong can your current city wall 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 car still have some effect when they hit the newly built city wall above. The city wall that can be hit will cause some turmoil, but if it hits the city wall built in front of the sky below, it will not have much effect like hitting the real city wall. There is a difference.
Guo Huai suddenly took a breath of cold air. How could the Shu thieves build a new city wall in two days? !
What kind of magic is this? !
Well, even if it weren't for magic, with the speed of city wall construction by the Shu thieves, it wouldn't be difficult to build a new city at the Baoxie crossing, right? !
How can we fight this battle? !
If he could not conquer the "city" in front of him, Guo Huai would not be able to move forward, let alone recapture the Baoxie crossing.
But it takes two days to break through to build a ten-foot-high city wall. Even if you give me ten times more Thunderbolt Cars, I can't beat their construction speed.
Guo Huai felt uncomfortable and quickly wrote to Cao Ren, who was recuperating in Chang'an, about the true situation. As a result, he was scolded by Cao Ren.
Take a look for yourself. Is there anything in your letter that is human? !
It's not like Cao Ren has never heard of the idea of building a city overnight. When Emperor Wu fought against the coalition forces of Ma Chao and Han Sui at Tongguan, he did rely on winter ice, snow and cold weather to build a city overnight. What the hell? It's early summer.
If the city wall is raised ten feet in two days, is it still a stone wall? Do you, Guo Huai, think I am old and confused? !
Cao Ren didn't believe Guo Huai's letter at all. Not only did he not believe it, he also scolded Guo Huai and told Guo Huai to seize the time to advance the army and not give the Shu thieves time to react.
But Guo Huai. Guo Huai really wants to scold his mother.
Although this thing is indeed unbelievable to the extreme, I can’t believe it even when I look at it. But this is a fact! ! !
Guo Huai had no choice but to send out thunderbolt chariots to continue smashing the city wall. At the same time, he tried to launch detailed operations to find out what happened in the city and how the Shu thieves were able to build a one-foot-high city wall in two days.
In these days, although there are regulations against espionage and confidentiality, people these days are not that high in ideological awareness. Although he paid a certain price, Guo Huai still got some cement and figured out how the Shu thieves were able to do it between the two A city wall ten feet high was built in one day.
Guo Huai saw that the craftsman only messed around for a while and easily glued the two stone slabs together. By the afternoon, the cement had dried and the two stone slabs had to be smashed hard to separate. He suddenly understood everything.
If only I had this thing in hand, I could build a ten-foot-high city wall in two days.
This thing is an important weapon of the country.
Guo Huai quickly ordered people to send the cement to the rear, and at the same time began to make detailed arrangements. He must get the formula for this thing. If this thing is in the hands of the Wei Dynasty, with the strength of the Wei Dynasty, he can build a complete road in Guanzhong. The Great Wall came out to defend the Shu army.
When Cao Ren saw the cement and understood that what Guo Huai said was true, he immediately understood that his plan to recapture Baoxie Pass was completely ruined.
Cao Ren felt a resentment in his heart that he couldn't express. He took a mouthful of old blood and lay down again.
As soon as he lay down, Cao Ren's condition became more serious.
But no matter how serious his condition was, Cao Ren still couldn't just rest. He had to respond to the current situation in time.
They are all generals who have been in battle for a long time. It is impossible for them not to realize the importance of cement. Cao Ren also wants to master the secret recipe of cement as soon as possible.
It is no longer important whether we can recapture Baoxie Pass. The really important thing is to figure out how these magical powders are made.
For this matter, Cao Ren dragged his sick body and ordered Guo Huai to withdraw his troops and not attack the Shu bandits for the time being. At the same time, he also ordered all the craftsmen in Shu to be used to obtain the cement formula at all costs.
Fengqi Longxi can't do it, Longxi is no longer in Cao Wei's hands, but Fengqi Chang'an must be launched.
And this was the last thing Cao Ren did for Wei before he died of illness.
After Cao Ren died of illness, Guo Huai withdrew his troops and returned to Chang'an. Chen finally breathed a sigh of relief when he arrived here, and quickly ordered Liu Yin to build all the camps so that they would look like what Zhang Xi saw when he arrived at Baoxie Road.
While Liu Yin agreed to this matter, he also did not forget to remind Chen Dao that it would be better to keep cement in the hands of the army for the time being.
If this thing were placed somewhere, I really don’t know what kind of changes would happen.
If it weren't for the lack of positions, Liu Yin would have told the court to tell them to quickly find out the secret cement recipe and never let it leak out.
This is why Chen Dao ordered the suspension of construction of the Baoxie Road mountain road and concentrated all cement at the Baoxie Road entrance.
Zhang Xi was also a little stunned after learning what happened during this period.
He was neither worried about Cao Jun's sudden invasion, nor was he impressed by Liu Yin's calmness and resourcefulness. What surprised him was that these days, people actually knew how to use cement to make bamboo reinforced concrete and prefabricated panels! ! !
Are you really planning to fight World War II? !
At the same time, Zhang Xi can now understand why Chen Dao ordered not to repair Baoxie Mountain Road, but instead transported all the cement to the military camp at the entrance of Baoxie Road, and also recognized Liu Yin's concerns.
But Liu Yin really didn’t need to remind him about this matter.
Zhang Xi is also a person who has experienced a lot of things, and he is not so stupid, so when he inspected the Xangqi County and instructed Ma Zhong to build a cement field, he ordered Ma Zhong, all the craftsmen and soldiers in the cement field, All are registered as households individually and given the best treatment, but circulation is strictly prohibited, and family members are not allowed to leave the local area.
As for the cement field, it is under direct military control. No one is allowed to enter or leave the cement field without a warrant from the governor of Zanggan.
After Zhang Xi reported this matter to Zhuge Liang and Liu Bei, they became even more ruthless and directly ordered Ma Zhong to personally supervise the cement plant, giving Ma Zhong the right to act first on matters related to the cement plant. As for anything about the cement plant, Ma Zhong can report directly to Zhuge Liang or Liu Bei, and others have no right to intervene.
After Liu Bei became emperor, the cement plant was directly classified as a royal property. In addition to his official position as the governor of Zangda, Ma Zhong also had the title of Huangmen Shilang, and he was already considered a member of the royal family.
It can be seen that the importance Liu Bei and Zhuge Liang attach to cement, whether it is the formula or the craftsmanship, cannot be easily leaked.
As for cement, it cannot be avoided. No matter how strict the control is, people these days have no concept of the country, and their moral standards are also uneven. Some people can really do anything for the sake of glory and wealth.
In fact, Zhang Xi and Zhuge Liang have also considered this point, and have no intention of strengthening control.
Because the technical level of this era is not enough, and Zhang Xi is half-assed in this area, the cement that can be made in this era can last for about three months. The cement that is not used for more than three months will slowly become It is hard, and if used as an adhesive, the effect will be greatly reduced. It is not as good as the commonly used glutinous rice mortar today.
It will take at least more than a month to transport the cement produced from Zangzhou County to Baoxie Road Pass. If it is transported to Liangzhou, it will take about two months. If it is transported to Hebei, it will not arrive before it is transported. It has become lumpy and cannot be used at all.
Therefore, Zhang Xi is really not afraid of the leakage of finished cement products, as long as he ensures that the formula and craftsmen are not leaked.
On the contrary, what Zhang Xi is more concerned about is that even if Chen Dao concentrated all the cement in Hanzhong into the army out of confidentiality considerations, after building these camps and fortresses, there should be a lot left, right? !
Why not use it to build Baoxie Road mountain road? !
You know, the wider the Baoxie Road mountain road, the more convenient it is to transport supplies, and the more advantageous it is for Chen Dao to stick to the Baoxie Road crossing.
Regarding this question, Liu Yin still stood up and answered Zhang Xi.
(End of chapter)
