Eastern Palace.

Courtyard.

Lime and hard clay mounds inside the yard.

A group of craftsmen surrounded the yard, trembling with coldness.

Qin Yu and Xiao Nan were wearing fur clothes, and they also felt a little cold.

Qin Yu really doesn’t want to make any cement in the middle of winter. Isn’t this a big deal suffering?

He was afraid that the cement would freeze directly after a while.

"Brother-in-law, it's too cold this day. Why don't we go to the house to light the stove?"

Xiao Nan looked at Qin Yu and suggested.

When Qin Yu heard this, his eyes shone brightly, and he felt that it was such a good trick. It happened that the room where they used to experiment with the stove and the kang was still idle, and there were many stoves in the room.

"good."

Qin Yu nodded, then looked at Deng Bao, "Go and light up the stove and kang in the room of the test kang, let's go to that room to do it."

"Yes, my son-in-law." Deng Bao bowed and then hurriedly left.

After one stick of incense.

Qin Yu and his group came to the house, and lime and clay were also brought in.

At this time, the kang and stove in the house were burning, warm.

Immediately afterwards, Qin Yu began to lead a group of craftsmen to build a large stove in the house and prepare to make cement.

In fact, the method of making cement is not complicated. You only need to mix lime and clay in a three-to-one ratio, then calcined at high temperature, and finally crushed into powder, and what you get is cement.

The biggest feature of cement is its hydraulic rigidity. A series of chemical reactions will occur after the cement encounters water. It is a very good industrial adhesive and can greatly enhance the solidity of the city wall.

If fine sand is added to the cement, it is cement mortar. If gravel is added, it is concrete. If reinforced with steel bars is supplemented, it is reinforced concrete.

The process of making cement is not complicated.

Xiao Nan was also very interested in cement and participated in it throughout the process.

It was not until dusk and sunset that Qin Yu and his team made the cement out.

It was getting late, so Qin Yu did not make the next arrangement.

......

Until noon on the next day.

Qin Yucai gathered a group of craftsmen together again.

"Brother-in-law, what do we do today?"

Xiao Nan rolled up his sleeves and was full of energy.

Qin Yu said lightly: "We have made the cement. Today I will paste a wall and try to be strong."

As he said that, he walked outside the hall, looked around, and pointed to a red wall not far away, "After a while, use concrete to cover the outside of the wall, and pour another wall out."

Concrete is a semi-liquid substance, and its biggest feature is "watering". As long as you open the mold, you can water it no matter what shape you have.

Listen to Qin Yu's words.

Deng Bao was shocked and said anxiously: "Mr. Prince Concubine, this... is pasted the palace wall, this... will ruin the Feng Shui of the palace. Those censors from the Ministry of Rites are afraid of it.

If you want to participate in you, your Majesty will be unhappy!"

Qin Yu hasn't spoken yet.

Xiao Nan leaned his neck and said in a deep voice: "Fuck! My brother-in-law is in charge, who dares to object? I will give the bastard a wall! This is the instructed by the father. What's wrong with him?"

Now Xiao Nan is a loyal fan of Qin Yu, and he will do whatever he wants to fight against Qin Yu.

"this......"

Deng Bao stammered and didn't dare to say anything.

But he thought it was true. Now in the palace, who dares to cause trouble for the prince consort and the prince? That Chunchun is looking for death.

Then a group of craftsmen began to do something, laying a circle of blue bricks outside the red wall, and then pouring concrete into it.

Now the conditions are limited, so just keep the reinforced concrete.

With the power of these siege equipment now, concrete is more than enough.

Under Qin Yu's heavy reward, these craftsmen worked very hard, pouring buckets of concrete into the sky surrounded by blue bricks.

In fact, Qin Yu did not make cement to go to Guyang Pass. When he went to Guyang Pass, he did use concrete to reinforce the city defense of Guyang Pass, so he bet against Emperor Wei.

When the Ulu army, which had no heavy siege equipment, saw the city wall fifteen feet high, I wondered what I would think.

Xiao Nan looked at the buckets of concrete that were poured into the air and asked, "Brother-in-law, do you... don't you use bricks to build the concrete? Can you just pour it directly?"

"certainly."

Qin Yu nodded confidently, "Otherwise, how can the solidity of reinforced concrete be shown? But this is just the primary version. When we arrive at Guyang Pass, we will need some steel bars."

Xiao Nan heard the eyebrows raised slightly and didn't ask anything else.

After explaining the matter.

Qin Yu and Xiao Nan went back to the side hall to listen to the song.

They are one of the princesses and the other are the princesses, so they naturally don’t have to do everything themselves.

......

Three days later.

Eastern Palace.

Qin Yu and Xiao Nan stood in front of a gray concrete wall.

Qin Yu touched the cold wall and nodded with satisfaction. It seemed that the concrete had succeeded.

Xiao Nan was a little confused, and he still felt that the concrete that was directly poured was not so strong.

However, out of trust in Qin Yu, he still did not question it.

at the same time.

General Meng Zhan, the Yulin Guard, led a team of soldiers in, "The last general has met the prince consort and the prince."

Qin Yu nodded slightly and pondered: "General Meng, have you brought the things?"

“Bringed.”

Meng Zhan responded and waved his hand.

Immediately afterwards, several soldiers pushed out a small catapult and a crossbow.

The catapult and crossbow were forged based on Uro tribe-level siege equipment.

As soon as I saw a catapult and a crossbow.

Xiao Nan was so energetic that he ran to the catapult and crossbow and gently stroked it. He couldn't let it go, "Let me see, the four-arrow crossbow, the masterpiece of the Third Ordnance Prison, the range should be seven hundred steps.

.”

This statement is implemented.

Everyone looked at Xiao Nan with surprise.

Qin Yu raised his eyebrows slightly and said incrediblely: "Just just looking at the crossbow, you can know which military weapon supervisor made it."

Xiao Nan was stunned and shook his head, "No."

Qin Yu was puzzled, "Then how did you know it was the masterpiece of the Third Ordnance Supervision?"

Xiao Nan pointed to a line of words on the crossbow, "Isn't this written? The Third Ordnance Supervisor."

Qin Yu: "..."

Meng Zhan: "..."

99:"..."

Qin Yu really thought that Xiao Nan's understanding of military weapons had reached a level of superb level.

at the same time.

Emperor Wei came with Qin Wenyao, Jiang Honglang, Lu Jianping and other humerals, and tigers walked along the dragon.

"Good son-in-law, have you finished the things so quickly? Your efficiency is still as high as ever!"

Emperor Wei walked into the courtyard and shouted at the top of his throat.

Emperor Wei was also looking forward to the raw materials that could reinforce Guyang Pass to a height of five meters.
Chapter completed!