I picked up the dragon girl at the beginning and I used artillery fire to liberate the other world

After being shocked for a while, Edward looked at Bai Yan's serious expression and asked, "Who are you going to go to war with, Your Highness?"

"Of course it's my good brother in the capital. My father doesn't have much time left.

But now, let's deal with those restless monsters first."

Bai Yan stood up and walked to the window.

Through the mixed crystal glass, the low houses of Black Iron Castle are all in sight. Along the ochre-colored road, the towering mountain in the distance stands quietly, and the brown-yellow mountain exudes a solemn and bleak feeling.

"That's a monster. With ordinary soldiers like us, I'm afraid..."

The worry between Edward's brows never dissipated, but became tighter and tighter. He felt that his prince seemed to have paranoia.

"Okay, Minister Edward, we just need a wall, a tall, impenetrable man-made natural moat."

Bai Yan turned to face Edward and patted the elderly man on the shoulder. Although he was old, his body was extremely strong.

"It's impossible. Our stonemasons can't finish it even if they work day and night." Edward felt more and more helpless. His Highness must be suffering from paranoia. How can a city wall be built in just half a month?

Even if those skinny stonemasons spent half a year, they might not be able to build a five-meter-high wall, let alone make it indestructible.

"Edward, have you collected all the information about the people of Black Iron Castle?"

“Yes, Your Highness, according to your request, Black Iron Castle has a total of people and serfs.

I have asked someone to record their detailed information.”

As for Edward, Bai Yan was naturally aware that the old man's views had been deeply influenced by those "high-ranking" nobles, but these were only temporary. Moreover, Bai Yan discovered through the Book of All Things that this old man was not only loyal, but also very capable.

The next morning, Bai Yan simply ate some breakfast brought by the maid, and then left the lord's castle for a stroll.

Along the way, every citizen Bai Yan met greeted the young lord respectfully.

In their hearts, Bai Yan was already regarded as a god who had fallen to the earth to save them.

Every citizen has his own piece of land, and every time they think of this, it feels like a dream.

As a result, the people who had not been outside to do farm work for half a day now rushed to the fields before dawn.

That was food! The more they planted, the more food they could get. They wished there was not a single weed in the field.

The atmosphere of the entire Black Iron Castle suddenly changed, becoming passionate and cheerful.

Following the familiar route, Bai Yan arrived at Wald's chemical laboratory in the southeast corner of Black Iron Castle.

The large pits in the original experimental site have disappeared, replaced by various crooked stone walls.

Some of the stone walls have collapsed to the ground, while others are only built on a foundation of about one square meter and are ten meters long. They look like they will fall down with a gust of wind, but they still stand firmly.

"Your Highness! You are truly the God of wisdom. It only takes a few hours to transform liquid soil into hard stone." Wald, wearing a piece of clothes stained with cement, ran from the distant experimental site to Bai Yan. His eyes were so eager as to look at Bai Yan that they were about to ignite flames.

"Your Highness, what is the name of this material?"

The corner of Bai Yan's mouth twitched, and he pulled his hand out from between Walder's hands with a little disgust. If it weren't for the information displayed by the Book of Everything, Bai Yan would even think that this guy had some special hobby.

"It's called cement. Have the viscosity and hardness tests been completed?"

"Cement! You are worthy of being His Highness. Even the name he chose is so perfectly in line with the characteristics of this supreme creation." Wald's face flushed with excitement again, and Bai Yan couldn't help but take a step back.

"Your Highness, please take a look at this."

There was still some afterglow of the climax on Walder's face. After he finished speaking, he took Bai Yan to the tallest pile of stone walls. It was not called a stone wall, but it looked more like a small tower.

"Look at it! This is a groundbreaking art. Even those mages who cast rock magic cannot achieve such a feat.

Your Highness, the adhesion of this cement is totally incomparable to that of mud, and it is very hard, as hard as stone."

Walder spitted and spoke, hugging the stone tower from time to time, "I used the materials given to me by His Highness, and after repeated tests, I have determined the best ratio.

The Rock God is watching over us."

"Well done. Now I have a task for you, Walder. Are you willing to share my worries?"

Bai Yan nodded, but he was already a little worried about Wald's mental state.

"Of course I do!" Still excited, with his face flushed, Wald shouted these words in a ghostly and howling voice, standing straight like a soldier who just came out of summer camp, his eyes so determined that it made people ashamed.

"Yes, I want you to build a ten-meter-high and five-meter-wide wall in Black Iron Castle within half a month.

As for manpower, all the craftsmen in Black Iron Castle will be given priority to serve in this work."

Bai Yan knew that even with cement, it would still be difficult to build the wall in just half a month. But there was no way, he didn't know if those monster-like monsters would suddenly have a seizure and run down one day.

Otherwise, he would lose not only this half month, but the entire winter.

When Walder heard Bai Yan's words, his eyebrows trembled slightly: "Your Highness, you want to rely on cement to stop the monsters?"

"This is only part of it. Why? You also think this is impossible?"

"No!! I'm just... a little excited.

As expected of His Highness! You have defeated too many corrupt nobles with your courage alone.

That's wonderful, you must have planned everything."

A few black lines appeared on Bai Yan's forehead, and the corners of his mouth twitched imperceptibly: "There is definitely something wrong with you."

"Then I'll leave this matter to you. I trust you, Walder." Bai Yan patted the white-bearded old man on the shoulder. Wow, his body is so tense.

"Yes! Everything will be as you wish." Wald's face flushed with excitement again after being patted by Bai Yan.

So, a "chemist" became an architect at Bai Yan's request. Why did Bai Yan do this?

Because this guy is an architect...

After all, the Book of Everything does not lie.