The next day, before dawn, Rafa woke up from his meditation, and the longer he practiced Star Retreat, the stronger his mental power became, and he could even be sleepless for three days in a row, but he still decided to respect the routine of this world, rise out of the night, and be consistent with the people around him, so as not to expose the fact that he was different from ordinary people, in a world of religious brainwashing, it is always good to be careful.

He was a little worried about Philicille's regular routine, because Philicille returned to his room next to him almost every day in the middle of the night, and she went to her laboratory early in the morning before dawn, and I don't know how she managed to persevere.

After a cursory wash, he prepared to head to Felihill's territory and take the cement that had been prepared.

But by the time he got close to her territory, the neat cement buckets had already been neatly stacked in an open field, and it seemed that she was not going to let him in today.

After ordering the knights to move the cement buckets under the city walls, it was already getting dark.

Seeing the knights coming back with strange things, the head of the knights was a little puzzled, "Your Highness, this is what you said can repair the city wall?"

Rafa smiled, "Not bad. ”

"Uh... Your Highness, with all due respect, the walls of the previous Icefields City were tightly packed together with neat masonry and mortar, and it took several processes to finally become so strong, but you rely on this pile of powder... The end result is... I can't imagine. "Because Rafa saved the soldiers who were suffering from sepsis last time, Kono was quite convinced of him, but now when it comes to building materials, he doesn't dare to let him do anything.

"Knight Kono, please rest assured, Your Highness has done experiments to ensure that the effect is no worse than the previous city wall. Audair thought that Rafa might have explained too many times, so she took over.

Kono knew that the upright Audrey would not deceive people, so he had to accept it, "So that's the case, then I naturally believe in His Highness." ”

"Knight Kno, I guess Sipheus has already told you about the large number of wolf cavalry in the Auguin Mountains, right?" Rafa instructed the knights to pour out some of the cement.

Kono pressed his right hand to his chest, "Of course, every knight of the Order will defend His Highness to the death. ”

"I'm not talking about that, I'm saying I'm not going to be sloppy in a matter of life and death in Icefield City. ”

"I'm sorry, Your Highness, I shouldn't have questioned you. Kono bowed slightly.

"It's okay, you quickly send someone to count what else needs to be repaired or renovated in the walls of Icefield City, I heard that this group of wolf cavalry is very fierce, we can't show a flaw. ”

"Yes!"

After that, Rafa personally commanded the knights to start the repair of the big hole, because the use of cement is very simple, can be mixed with sand and gravel, so the knights are also very easy to use, the cement and sand and gravel are mixed with water into the shape of a volcano, and then the sand and gravel slurry is lifted to the city wall with a bucket, and the stones left over from the ruins are used at will, and the stones are stacked together with sand and gravel mortar, it's as simple as that.

Since the walls had to be built very high and the cement would take some time to dry, when the walls had reached a certain level, Rafa ordered everyone to stop and wait for the cement to dry before starting work.

This was a way of building that the knights had never seen before, and most still didn't believe that the soft sand and mud could hold the stone in place, because they didn't have much hope that even their rough men who had never touched the buildings they had ever touched could build.

But when the three princes shouted for lunch in the afternoon, they realized that something was wrong.

The sand and gravel that was soft and soft when it was laid in the morning has now become as hard as steel!

The knights were curious to feel the walls they had built with their own hands, as if they could not believe that they could build such a strong wall.

In the end, Rafa, in order to dispel their last doubts, ordered the knights to stand in a row by the concrete wall, and then pushed hard in unison, but the wall did not move at all.

Now the knights have no doubts at all, you must know that the thin wall built now is just the outer wall of the hole, which is equivalent to the eggshell of an egg, and the inside will continue to be filled with more sand and gravel slurry, and after it is completely solidified, its hardness is incredible.

The knights, who had no worries, were even more enthusiastic, and by evening, two-thirds of the hole had been built, and the city was left empty, but it was estimated that the work would be completed tomorrow.

At the end of this day, the people of the entire Ice Plains City knew the news that the three princes had built the city wall in one day, and some of the people who had taken care of the vegetable greenhouses and finished their day's work all came to the newly built city wall to touch and take a look.

Rafa, however, was not so happy, and although the hole had been relieved of the worry that had been hanging on his mind, an even greater worry arose.

When Kono sent people to inspect the ruined city walls, he found that almost all the walls of the entire Ice Plains City were in disrepair, and there were dozens of large and small cracks that had collapsed, and there were more than a dozen decayed foundations, and some of them were even large enough for people to enter and exit.

"After you say that, I feel as if the walls of Icefield City could collapse at any moment. Gathering the crowd into the council chamber, Rafa's brow furrowed deeply.

"It's not like a crash, it's true that there are a lot of loopholes and hidden dangers. Kono replied truthfully.

It has been almost three hundred years since the establishment of Icefield City, since Rafa's great-grandfather established the city in order to defend against the barbarians, after defeating the barbarians, the Icefield City has been gradually abandoned, and the maintenance of the city walls often requires a large amount of money, and the empire obviously does not spend money for this dispensable small place, so the ruin of Icefield City has continued to this day.

He thought for a while and raised his head, "We can still tinker with it now, but if we want to develop in the long run, it is inevitable to demolish the existing city wall and build a new one. ”

When it comes to repairing the city wall, it must be indispensable to talk about money, and when it comes to money, Sieverus immediately becomes nervous, "Ahem, Your Highness..."

Seeing Sieverus speak, Rafa immediately interrupted, "I didn't say that I want to repair it now, I said that it will be repaired in the future;

"It's going very well, I got all the people I needed yesterday afternoon, and I'm working on your drawings today. ”

"Very well, as long as the cement plant can be put into operation smoothly, all the problems related to construction can be solved in the future. ”

After telling the knights to use cement properly, he dismissed the men and prepared to go to Felihill's territory to inquire about gunpowder and firearms.

"Audrey, did you leave that drawing I drew yesterday in her lab?" asked Audrey as she walked around.

Audair gave him a strange look, "Didn't you leave that drawing there on purpose?"

“...... You've found out. ”

"You threw the blueprint at my feet when you turned to leave, and if it wasn't so obvious that I didn't see it, I wouldn't have to be a guardian knight. ”

"No way, Fili wasn't there yesterday, and I can't bother her, so I can only make this decision, maybe she has prepared a surprise for me!" he said, and he couldn't help but speed up his pace.

Sure enough, the maid guarding the door seemed to have been signaled and immediately let them in.

When they arrived at the familiar venue, the scorching heat caused both of them to shrink their necks.

Elle was grasping a piece of red-hot iron in her hand and kneading it as if it were kneading it into a fixed shape, and some parts of her clothes had begun to simmer slightly, perhaps because Felihill had fulfilled Rafa's promise to give her a room of clothes, so her spirit did not fluctuate as before, and it was smooth when it came to forming the iron block.

Felihill, on the other hand, sat quietly at the table, looking at the drawing that Rafa had deliberately left behind, as if he had not seen the two of them coming.

"Dear lady, it seems that you are a kitten. Rafa strode up to Feliscille and sat down with a big grin.

Felihill put down the drawing and looked at Rafa, "What do you mean?"

"I mean your curiosity is as exuberant as a kitten, nice metaphor, right?"

Felihill raised an eyebrow, "Oh, in that case, it looks like you're a dog." ”

Now it was Rafa's turn to wonder, "Uh... What do you mean?"

"Because only dogs often run to their master's house, and they have to ask for a reward. ”

Rafa was in a daze, but Audrey laughed out loud.

After being speechless for a long time, he could only smile and shake his head, "Dogs are dogs, so miss, what is my reward today?"

"Let's talk about what this thing is, I think your painting this time is very fine, it shouldn't be a useless thing, right?"

"Ha, so there's something Miss Filihill doesn't understand?"

Philicon's face turned cold," he said. ”

"Uh... Yes, yes, I'll say..."Although Felihill had always been cold to him, he just liked to see her serious.

Then Felihill opened the specially prepared notebook and began to record it at a rapid pace.

“...... Well, that's pretty much it, after all, the key to everything is the gunpowder I told you about last time, but you haven't mentioned this thing, is it a failure?" Rafa didn't care if Felicier could write it down in time, and finished in one breath, and then took a sip of the hot tea brought by the maid.

"It's pretty much what I imagined. Felihill looked at the notes with satisfaction.

This thing that was ahead of her time appeared on the drawings, and she still imagined it to be almost the same? What kind of brain did she have?

"Wouldn't it? I'm very detailed, but I'm all drawing the parts apart, how can you ...... just by imagining?"

"Ding"

Felihill made a metallic thud in her hand, and a golden particle bounced out of her white finger.

"This is!?"

Rafa was horrified and picked up the object in his hand that only existed in his memory.

"Bullets!"

To be exact, it was a golden bullet, the whole was pointed and streamlined, exactly like the sketch drawn on the Rafa drawing, and the low fire on the bottom package proved that it was a real bullet!

Speaking of bullets, Rafa thinks it's a work of art.

The beautiful and smooth appearance reflected his distorted face, and the parts at the bottom except for the low fire were tattooed with a circle of fine flame patterns, which were heavy in his hand, and the whole was a somewhat dazzling gold, obviously not the brass shell required by the drawings.

Looking at Rafa, who was speechless in shock, Felihill said indifferently, "Copper is not easy to find, I used a string of gold chains to melt gold, I don't know if it will work, the gunpowder in the bottom cover is configured according to your recipe, I have done experiments, and the power is not small." ”

Hearing that the problem with the gunpowder had been solved, Rafa suddenly stood up and exclaimed, "Miss Philicill, you must be an angel sent from heaven to save me!"

Felihill took a sip of the black tea in the cup and looked at Rafa, "You're not a demon, you don't need my salvation." ”

At this time, Elle, who had been burning the fire, also stopped, and walked over with a piece of iron that had been formed but was still red.

Audrey looked at her holding the red-hot iron in her hand, and took a half step back in surprise, but Rafa and Felihill were very calm, as if they were not surprised.

Elle threw the red piece of iron into the bucket beside her, ignoring the still burning sleeves of her clothes, sat down on the chair, and began to stuff the cake that had been prepared into her mouth, "Sister Fili, the last piece is finished!"

"Let's go change first. Philisille said.

"Uh-huh....." Elle, who had a room full of clothes, immediately cheered and left when she heard the change of clothes, and did not forget to stuff a large piece of cake into her mouth when she left.

"Ahem, if she eats like this, she will become a big fat person sooner or later. In Rafa's memory, every time he saw Elle, there was not a moment of pause in his mouth except for work.

"The parts you want are in the bucket, go get them yourself. ”

"Yes!" Rafa was even more surprised at this time, it turned out that the parts he had drawn, Elle had already finished making.

Regardless of the wet sleeves of his coat, he couldn't wait to fish out the strange-shaped parts from the bucket.

Felihill stood up and came behind him, "It's pretty much what I thought, but I feel like I'm missing something......"

"Hehe, there's no gun shaft to carry these parts, that thing is made of wood, I didn't draw it on the drawings. He randomly picked up some parts to fit and compared, and found that the workmanship of these parts was extremely exquisite, almost to the point of being exactly the same, but the part that Elle had just put down in her hand had some minor flaws, but it was not a big deal for the whole.

"I see, you can make this thing yourself, right?"

"Of course, but there's something wrong with your bullets. Rafa made sure that there was nothing wrong with the parts and then asked the question of the bullets.

Upon hearing that there was something wrong with her own things, Felihill frowned unusually, revealing the fact that she was a perfectionist, "What's the problem?"

He took out the bullet that looked like a work of art, "I don't have to say anything about the workmanship, but it uses the wrong material, although gold is the most precious metal, but it is by no means the hardest, and it will be deformed as a whole when it is fired at a low fire, so gold is by no means a good material for making bullets, and it doesn't hurt without copper, and ordinary iron can also be used." ”

Say. Felihill flipped through the notes again.

"Uh... Didn't I say, what do you want from me?" Rafa knew she had grasped another point, but she didn't know what she was thinking.

"The hardness of different metals. ”

"Ah, you mean this...... Although diamond is the hardest, its essence is no different from carbon, so it cannot be subjected to high temperatures...... this is relatively simple, because many metals have not been developed in this world, so there are only a few types of metals, so it is quickly explained.

"You can go. Closing the note, Felihill immediately rolled her face.

"Hey, I'll go," Rafa said eagerly trying to put together things he hadn't seen before, "Oh, yes, bullets are like arrows in a bow, and you can't make one." ”

Under Felihill's cold eyes, he and Audair each left her territory with some parts in their arms.

"Ah, I wish it was tomorrow!" Rafa exclaimed happily as he walked along the way.

"Is this really that important?" Although Audair also heard the conversation between the two, she didn't have the mind of Philisille, so she heard it in a fog, and some didn't know why.

"It's not just what we have, have you forgotten, tomorrow is the day when the caravan agrees to come back, who knows what surprise they have brought me!"

Rafa hurried back to the empty room that had been prepared, and asked Audair to find a piece of mahogany, which was most common outside of Icefield, and began to carve the gun rack to hold the parts.