Datang: The prince of salted fish was overheard by Li Er

However, when Li Shimin was anxious to see the next repair site, Liu Ji took out a long ruler and kept making gestures on the wall.

Then spread several layers of paper on the concrete wall, and then picked up a small hammer and began to knock on the wall.

"What is he doing?"

Qu Tutong asked in puzzlement.

[I don't understand, he is checking the wall. 】

[The quality of a wall can be checked from several aspects. 】

[First, it is natural to look to see if there are cracks on the wall. 】

【Then check the verticality and flatness of the wall. 】

[The last thing is to check whether there is any hollowing inside the wall. 】

[Knock it with a drum hammer and listen to the sound to see if there is an empty drum.If there is hollowing, there may be a risk that the overall surface layer will fall off or crack. 】

Li Shimin naturally heard Li You's heartfelt words.

Li Shimin has been looking for opportunities to install ACs since he first started inspecting the repair situation.

Hearing Li You's heartfelt voice now, his eyes brightened.

"Jiang Guogong, he is checking whether there is any hollowness in the concrete wall. If there is a hollow in the wall, the knocking sound will be different."

Qu Tutong was also a veteran minister who had been in the Ministry of Industry for several years, and he understood the reason behind Li Shimin's little guidance, so he couldn't help but look at Liu Ji's carefulness with admiration.

[Oh, not bad, Li Er actually knows how to check the walls. 】

[Sure enough, none of these emperors are simple. 】

This voice made Li Shimin excited, and by the way, he gave Li You a smug look.

Soon Liu Ji finished the inspection and nodded in satisfaction to Li You and Duan Lun.

Then Duan Lun led everyone to the second repair point.

Arriving here, another scene appeared in the eyes of everyone.

This time, what appeared in the eyes of everyone was a wooden wall.

"What are you doing! This is a military fortress, how could it be possible to use wooden walls! Although I know that there is a lack of stone in Guanzhong, is it too perfunctory to use wood..."

Qu Tutong asked in puzzlement.

If it wasn't for the shock of the concrete wall just now, Qu Tutong would have scolded him directly when he saw people repairing the fort with wood.

"Jiang Guogong, it's not what you think."

Realizing that Qu Tu was in a hurry, Duan Lun immediately opened his mouth to explain.

The one thing that needs fixing is a big hole in the wall.

When the wall was damaged, the original stone materials were all broken and could no longer be used.

So here Liu Ji adopted the method of pouring concrete.

He first fixed the planks on both sides of the hole, then mixed cement and sand and gravel in a certain proportion, and then poured them into it.

In order to make the new wall have sufficient strength, Liu Ji added iron bars in the gaps built by the planks to make the poured wall on this side stronger.

After Qu Tutong understood, he stepped forward to check.

A lot of cement that has not been completely dried out is exposed in the gaps in the planks.

Duan Lun on the side quickly reminded: "Jiang Guogong, don't worry. In order to make the concrete fluid enough, some more water was added here."

"The cement is not dry yet. We will not be able to remove the wooden boards until tomorrow when the cement is completely dry."

"After removing the wooden boards, smooth the wall surface just like the wall just now."

Duan Lun has a good understanding, but in just one morning, he already knows the use of cement very clearly.

After listening to the explanation, Qu Tutong suddenly became excited.

If it is the previous cement wall, it shows the viscosity and firmness of the cement, but the main body of the wall still needs stone.

The current problem in Guanzhong is actually the lack of stone materials.

So Qu Tutong just lamented the speed of repairing the cement wall, and was not too excited.

But in front of this wall, Qu Tutong saw the fundamental solution to the problem.

If the concrete mixed with cement can really replace the stone after it dries up, then the construction of Guanzhong water conservancy may be realized.

"After this is disassembled, can it really be the same as the one just now?"

Because of the excitement, Qu Tutong's voice trembled uncontrollably.

Duan Lun nodded and said: "Yes, Jiang Guogong. I didn't believe it before, but I will take you to the next place later, and you will know."

Duan Lun led the crowd to the next place, which was also a wall made of concrete.

But compared to the place just now, this place has been demoulded.

After seeing the strength of the poured concrete wall, Qu Tutong was completely convinced by the cement.

"Your Majesty, I know I was wrong. This cement is really miraculous! With the help of this fetish, I will definitely live up to my holy hope and complete the water conservation in Guanzhong before the heavy rain comes!"

At this moment, although Qu Tutong lost the bet, he didn't have the slightest regret in his heart.

On the contrary, I am extremely excited because of this magical cement.

Cement and slaves gave Qu Tutong hope to deal with the heavy rain.

Since Qu Tutong took the initiative to apologize, Li Shimin would naturally not make things difficult for him again.

To be honest, Li Shimin is also very excited now.

He really wanted to tell Qu Tutong another good news, telling him that there were still a lot of cattle to contribute.

When the words came to his lips, Li Shimin still held back, he still thought it would be better to speak after the experiment.

"Jiang Guogong, now you can start repairing the water conservancy project in Guanzhong!"

Li Shimin also said happily.

"Of course, we can start work as soon as the money and food from the household department arrive!"

Qu Tutong readily agreed, and then looked at Li You.

Li You felt that the purpose of Li Shimin's insistence on coming today was to complete a statement at this time.

In order to be able to go home quickly, Li You also asked obediently: "I wonder how much food Jiang Guogong needs?"

After hearing the question, Qu Tutong made a rough estimate and made a price.

Then Qu Tutong said with some hesitation: "King Chu, I don't know what the price of this cement is? But apart from the cement, it is estimated that 60 million guan is enough!"

Hearing the amount Qu Tutong paid, Li You was also a little surprised.

[No, no, hundreds of thousands are considered money. 】

[Ignore him, ignore him, the elderly are also considered home. 】

[With this amount of money, why bother? I thought you would ask for several million from the moment you opened your mouth. 】

Hearing Li You's inner voice, Li Shimin was also surprised for a while.

"You bastard, didn't you expect the Ministry of Household Affairs to be so rich now? It's easy to spend 60 to [-] guan. '

However, it was Li You's next words that shocked Li Shimin's teeth.

Li You said with a troubled face: "Jiang Guogong, is the Ministry of Industry's budget going to waste too much?"

"You know the situation in the past few years. It is very difficult for the household department to come up with such a large sum of money at once!"