There was a light rain, and chickens were crowing in the morning in the farmhouse in Guanguan Village.

Yang Yan stood outside the firing room, with a group of tattered stonemasons gathered behind him, waiting for the blue flame in the firing room to be extinguished soon.

This is the gate village at the foot of Nanshan Mountain, on the left is the left branch of the Yanshui River, and between the two is the section where Yang Yan wants to build the city wall.

The firing room was rushed out in recent days, built by the stonemason Lu Chuan and the fifty stonemasons he found according to Yang Yan's requirements, the room is three meters high, ten meters long, and five meters wide.

The front door leaves enough open space to facilitate transportation, Lu Chuan can understand the prince's intention, but there is still a door on the back wall of the house against the mountain that can be passed by one person, no matter how you look at it, it seems redundant, Lu Chuan does not understand.

What's even more incomprehensible is that after the prince summoned everyone over this morning, he ordered the guard commander Cheng Han to guard the back gate and not allow anyone to approach.

Of course, Yang Yan won't let people know that this door is specially reserved for the goddess Mo Xiaobei.

A few days ago, after Mo Xiaobei came back from the bottom of the well, he couldn't wake up no matter how he screamed.

She woke up last night, but she didn't remember going to the bottom of the well, or what she had experienced at the bottom of the well.

For this reason, Yang Yan was inevitably a little disappointed, he originally wanted to learn about the dry well in the side hall through her.

However, through this incident, he unexpectedly discovered that Mo Xiaobei's blue fire divine power could melt pig iron.

Although her ability to control divine power was still very reluctant, he didn't dare to immediately try to collect divine power to open the system, but being able to melt pig iron meant that he had the high temperature needed to burn cement.

Mo Xiaobei is now in the firing room to release the temperature he needs!

It's been an hour, and the blue fire hasn't been extinguished yet.

At the back door, Cheng Han couldn't wait to see what the prince developed.

Just when he saw the prince coming over, he couldn't help but want to ask, but he heard the prince say something else, "How is it over there?"

Cheng Han had to pause and answer, "Your Highness, the last general personally saw that iron lump, and it is really like the old thing said, this thing is boundless." ”

Yang Yan was curious, "What do you think?"

"The last general didn't know that the miners had been digging for so many days, and they had only dug out the tip of the iceberg, and they couldn't see it all. ”

"Oh?" Yang Yan thought for a while, a few days ago, news came from Beishan, saying that the excavation was abnormal, and the mining progress was stagnant, so he sent Ji Huaan to deal with it.

Ji Huaan sent back the news that the coal miners dug an iron lump, and Yang Yan ordered him to stay and excavate, but after a few days, he still couldn't dig this thing out.

Yang Yan felt that something was wrong, and sent Cheng Han over to confirm the situation last night.

Now, Cheng Qiang's words made him feel more and more that the border countryside was not simple.

First, there was a basilisk in the Nanshan Mine, and now there is an iron lump in the Beishan Coal Mine, and there is a dry well full of white bones in the Nihuang Palace.

All kinds of signs revealed a strangeness, Yang Yan had a bad premonition, he didn't want to waste time on these things anymore!

"Your Royal Highness," seeing the prince pondering, Cheng Han thought of the feeling of being cold in front of the iron lump, and said in a low voice, "The last general always feels that this matter is evil, let's better not dig that iron lump!"

Yang Yan was surprised, and glanced at Cheng Han, there are times when the guy who is not afraid of the ground is also afraid, but he is right, before he understands the situation, it is better not to dig.

"Cheng Han, pass the order, let the old thing come back, don't dig the iron pimple for the time being. ”

"The season of beasts is approaching, and the consumption of coal in the border countryside must soar, and it will not be long before a large number of coal mines will be exported, tell the old things, and find other holes to dig coal mines. ”

"Yes, Your Highness," Cheng Han said, then hesitantly, "but don't you exchange the quota of coal mines for the grain of the Yangu Fortress every year?

"We won't give them a single piece of coal this year!" Yang Yan sneered.

Cheng Han was anxious, "Your Highness, except for the Yangu Fortress, there is no place to exchange coal mines for food, if we don't sell them to them, we will be hungry in winter!"

He didn't think that the prince would be able to stop the evil beast, but he felt that it would be a matter of time before he retreated, so if His Highness didn't sell the coal mine to the Iwagu Fortress, it would be miserable at that time!

Yang Yan was speechless, at this point, his henchmen still didn't believe that he could stop the evil beast, but it was conceivable that others wouldn't believe it!

But when they see the effects of cement, will they still have such a mentality?

Yang Yan is looking forward to it.

Suddenly, the blue flame in the firing room went out.

He didn't care about the chattering on the side, braved the remaining residual heat, opened the iron door and ran in.

"Your Highness?" Mo Xiaobei, who was dressed in a water-green dress, stood in the center of the firing room, she could already control the blue fire and not burn her clothes.

Yang Yan was excited, and Cheng Han followed, "Your Highness, these are the things you said can glue the stones together?"

"It's not a thing, it's cement!"

Yang Yan was excited, looking at the raw materials laid out smoothly. These raw materials are limestone and clay, which are hand-milled into powdered granules. Under the calcination at high temperatures, chemical reactions have taken place inside them that are not visible to the naked eye.

Of course, this is not enough, in order for them to have super adhesion, a certain proportion of gypsum powder must be added to it, but this is a later process, and it has nothing to do with the immediate situation!

"Xiaobei, you have worked hard. ”

Yang Yan looked at Mo Xiaobei, who was covered with gray face, "Thanks to you, the border countryside has cement, and this king swears that soon you will no longer have to hide and hide, so that you can live in the town openly." ”

Mo Xiaobei was very tired, and during the calcination, there was a lot of dust inside, and it was difficult for her because she didn't wear a mask.

But she was very happy to be able to help the prince, and when she heard that she could live freely, her eyes radiated with hope.

"Your Highness," she coughed twice, "is that what you want?"

"It looks like it, but you'll have to try it to find out. Yang Yan rubbed his hands.

"What do they do?"

"There are so many places that can be used to build walls, build houses, build roads, etc., and you will know later. Yang Yan patted the little girl's head, "Thanks to you, I made them." ”

Mo Xiaobei lowered his head. Yang Yan had the illusion that her breathing had slowed down a lot.

Ming Chenghan quietly escorted her back to the carriage to rest, Yang Yan shoveled a shovel of cement powder, mixed it with gypsum powder, and then mixed it with water to form a cement slurry, he couldn't wait to come to the front door of the firing room.

In front of Lu Chuan and others, Yang Yan poured the cement slurry on one brick and covered another brick.

The cement setting time is generally four hours, and Yang Yan wants to wait until tomorrow to check it for the sake of insurance.

Lu Chuan and other stonemasons questioned one after another, in their eyes, the mud in the prince's hands was just rotten mud, and they didn't believe that this thing could bond the stone bricks together.

Yang Yan didn't bother to explain, "Whether it works or not, everyone will follow this king over tomorrow to find out!"