After the previous Square Mutiny and the Battle of Waldo, Li Yunfei's prestige in Roland Giant City has reached an unprecedented height, and seeing him resist the appearance of the iconic big sword, the city gate of Roland Giant City has been opened early.

A group of city defense troops lined up under the leadership of the city defense officer to welcome the return of the Marquis of Lion's Tooth.

I heard that the Marquis went to the wilderness more than a month ago to train, but I didn't expect it to take so long to come back.

Tsk, looking at the relaxed expression of Lord Marquis, it is like going on an outing, worthy of the hero of my Roland Big City!

The soldiers of the city defense army stood in a straight line, and when Li Yunfei passed by, they all couldn't help but look at him with fanatical and adoring eyes, and their heartbeats began to accelerate.

Li Yunfei could feel the careful thinking of these soldiers, so he smiled all the way when he passed by, which made everyone's hearts very warm.

He also knew the defender of this part of the wall, and he was a small captain in the Iron Guard of Lorraine.

After a few words of greeting, Li Yunfei did not stop, directly took out the wind chariot, and quickly rushed to his lion's tooth marquisate.

The spire of the Marquis Castle in Honghe Town soon appeared in front of him, and Li Yunfei couldn't help but sigh when he saw this familiar town.

For the people in Roland Big City, he has only been away for more than a month, and for him, it has been more than a year, so he will naturally be full of emotion.

"Your Excellency is back!"

"Greetings!"

"Long live the Marquis!"

“......”

On the streets of Honghe Town, seeing Li Yunfei driving the wind car appeared, the people were stunned at first, and then recognized the person sitting in the car and cheered.

Li Yunfei's heart warmed, smiled and waved, and soon came to the castle.

In the courtyard of the castle, Kao, Martin, and Luke, who had already received the news, were standing there respectfully, waiting for him to appear.

"Welcome back from hunting!" Li Yunfei stopped the car, Kao took the lead, and everyone saluted in unison.

Li Yunfei jumped out of the car, put it into the space ring casually, and scolded with a smile: "Why did you suddenly become so good at talking, was it Kao's idea?" After he came back before, although there was also a greeting, but this kind of formal welcome ceremony was the first time, and a group of henchmen gathered here, which was extremely formal.

Luke smiled and said, "Lord Dean misunderstood, this is my idea...... After all, you have now threatened the human realm, and you should have no less etiquette. ”

Li Yunfei scolded with a smile: "I haven't seen you for a few days, and I'm good at sycophancy." ”

Then he led everyone to the castle study, sat on the wide leather sofa, twisted his body comfortably, and said with a smile: "It's better to be at home." Let's talk about what's going on lately. ”

Martin stepped forward and said: "My lord, some time ago, the territory and population of the Grand Duke of Piller have been merged and registered, and now there are five towns under the rule of the Marquis of Lion's Tooth, with a population of one million, two iron mines, one copper mine, and fields...... Mill Forty-Three ......"

Listening to what Martin said, Li Yunfei nodded with satisfaction from time to time.

He didn't care much about these industries, after all, the various rare minerals and existing gold coins in his hands alone amounted to tens of millions of gold coins. However, I didn't expect that under my jurisdiction, there were already a million people, and many of the things I thought of before could be implemented......

Originally, Martin was in charge of leading the subway guards, but later it was slowly discovered that Martin himself was not good at combat, but was more suitable to be a housekeeper, so all the internal affairs in this territory were entrusted to him. Now it seems that Martin is like a fish in water, and the handling is well organized.

After Martin finished speaking, Li Yunfei nodded and said: "Very good, then do what I told you before, establish five schools in the territory, any civilian child can come to study as long as he wants, and the main content of learning is tentatively set as word counting and potions." Tell everyone that the children who come to school will not take a penny, will be provided with three meals, and as long as they pass the mental strength test, they will have a chance to enter the war college. Go ahead. ”

It's still possible to recruit magic apprentices, but in the long run, if you can train your own talent, that's the most fundamental thing.

Moreover, according to Li Yunfei's plan, the development of the magic gold industry needs a large number of outstanding talents, and it is far from enough to be close to the War College.

After Martin bowed and retired, there were still many people left in the room, and Luke stepped forward and began to report on the situation at the War College.

"Lord Dean, because of the performance of the Demon Gold Warrior Legion in the Battle of Waldor before, in the past month, many magic apprentices have come to join the War Academy, and now the total number of students in the War Academy has reached 12,000, but in recent days, no new magic apprentices have appeared, it should be that ......the publicity effect has reached the limit," Luke said.

Li Yunfei nodded and said indifferently: "Got it." "Even though the strength of the magic gold warriors is obvious to all, after all, every magic gold warrior is only at the level of a quasi-magician, which is attractive to many magic apprentices with dreams, but it is still a little insufficient for those magic apprentices who have various ties.

It seems that we have to find a way to promote the hype again...... Li Yunfei deeply understood that in terms of the total number of magic apprentices, 12,000 people was only a small part, and there were many people who were still waiting and watching!

Then Luke and Kao looked at each other, a flash of excitement in their eyes, but they looked like they wanted to say something.

Seeing this scene, Li Yunfei waved his hand and said, "Let's all go down, Kao and Luke stay." ”

Soon, everyone else saluted, leaving only Kao and Luke behind.

When everyone was gone, Li Yunfei instantly released bronze-level spiritual power, enveloping the entire castle, and said to the two people in front of him: "Say, no one will hear it except the three of us." ”

The appearance of these two people is obviously something confidential.

Kao immediately bowed and said, "Please forgive me, this matter is really important, so we dare not let anyone except your lord know." ”

Li Yunfei smiled playfully and said, "What is the matter?" It seems that this matter is actually led by Kao, a pure researcher, which makes him even more interested.

"My lord, that's right, after the establishment of the War College, you asked me to select some magic apprentices as assistants to conduct alchemy research...... It has to be said that these apprentices are really people who are full of desire for magic, and after learning alchemy, they have shown amazing talent. At this, a hint of frenzy appeared on Kao's face. You must know that he himself is not a magician, not even a magic apprentice, just an ordinary person, and he also relied on his persistence in his dream to embark on this path, and he has achieved a lot.

"Go on. Li Yunfei nodded with a smile and said.

"There are two people among these assistants, named Brad and Polly, who were originally butcher shop owners and fruit and vegetable shop owners, and after seeing the alchemy circuit of the magic guide cannon, they had an idea, that is, since the magic guide cannon's circuit can export the energy of the magic crystal, if the circuit is reversed, can the free magic power in the air be absorbed and the energy can return to the magic crystal?" Luke looked at Li Yunfei and said slowly.

Hearing this, Li Yunfei's eyes widened, he instantly stood up, and asked loudly, "They succeeded!?"

Because he has always had enough magic crystals as an energy source, the problem of energy regeneration has become a blind spot in his heart. It's just that as a science genius in his previous life, he naturally understands the meaning of the magic crystal charge! This means that he will never, no, human beings will never have to worry about magic crystals, because the magic power in the void can be said to be endless, and these magic powers can be transformed into magic crystals at any time and stored again for human use!

Seeing Li Yunfei's excited appearance, Luke and Kao's expressions also became excited, and they saw Kao take a cloth bag and carefully take out a wooden board the size of a basin from it, which was crookedly carved with a lot of alchemy circuits, looking like a child's graffiti.

It's just that in the center of these alchemy circuits, there is a metal trough, and in the metal trough, a translucent magic crystal is placed there.

This magic crystal itself is only a faint red color, it is obviously a used fire magic crystal, and the magic power in it has been drained. It's just that Li Yunfei went deep into his spiritual power and immediately found that the alchemy circuit on the wooden board was injecting a trace of magic power into this fire magic crystal!

Every once in a while, a trace of magic will appear in this magic crystal, making the magic inside it grow a little bigger.

Although the speed of charging is extremely slow, and the magic power charged into it is extremely mixed, not only fire magic, but also water and soil and even a little bit of gold magic, but this is still charging.

There are also a lot of redundant and unnecessary places in the entire alchemy circuit, but the overall idea is correct.

Li Yunfei found at this time that at both ends of the entire circuit, there were two pieces of wood called "magic wood". This plant has a strong affinity for magic, and there is often a collection of magic around it, but it is only attached to it, and there is nothing special about it. However, this circuit uses the attribute of "magic wood" to allow the gathered magic power to be absorbed and circulated through the alchemy circuit, and finally poured into the magic crystal that has exhausted the magic power.

"Yes, yes, whimsy, these two are geniuses!" Li Yunfei nodded with satisfaction.

Although this alchemy circuit is incomplete, and the efficiency is extremely low, the materials used are very precious, and the input and output are not proportional, but the overall idea is completely correct. All that's left is to improve the loop and maximize the efficiency of this circle.

Because magic wood is so common and useless, if a magician who has systematically practiced alchemy, he will not think of this aspect. Perhaps it was because of too long of repression and attachment to dreams that these two people were able to think of this idea in a whimsy.

Looking at this crude circuit, Li Yunfei's eyes suddenly appeared in a trance The scene of the discovery of fire by the ape-man on the earth in his previous life, the moment when steam power was discovered, and the moment when usable electricity was invented. The significance of this circuit to the world is definitely not pressurized by this.

This circuit is named the Brad-Polley circuit. Li Yunfei groaned slightly, and said something that shocked Luke and Kao.