Diana stayed at the San Siro Palace last night. Gunnar's daughter, the heir to the Duchy of Milan, Kaif Nordahl, and Diana hit it off, so they slept together.

At first, Charles slept in the guest room by himself. Not long after he lay on the bed, a little girl about his age came to crawl on his bed, and Charles jumped out of bed in fright.

Not long after the little girl was invited out by Charles, a big sister pushed open the bedroom door. After the big sister was invited away, the little brother came to the door.

So Charles quickly put on his clothes and ran away. In the corridor, he also met the strong uncle who was about to come to the door.

The next morning, when Charles returned to the San Siro Palace for breakfast, he realized that it was Kaif who did it last night. She did not believe that Charles did not steal.

The Jiuyang Chamber of Commerce talked about land renting and buying a building during breakfast. After breakfast, Diana, the chairman, signed the land rent agreement and the building buying contract.

The Nordahl family has a castle not far east of Milan, where the family’s private soldiers are stationed, and the young people cultivated by the Nordahl family are trained there.

The castle sits on top of a hill and guards the east side of the city of Milan.

Kaif also came with her today, her long silver hair tied in a twist braid behind her head, wearing a knight's uniform with a saber hanging from her waist, looking heroic.

Along the way, Diana, who was chatting and laughing with Kaif, also changed into a dress similar to hers. The knight uniform worn by Diana should be from Kaif a few years ago.

There were many people training on the training ground outside the castle, Gunnar said to Charles and the others, "I'll show you guys an interesting guy first."

There is a row of houses next to the training ground for maintenance and repair of weapons and equipment, and the medical room is also here.

Gunnar brought everyone to a house.

There is a large blackboard hanging against the wall in the house, with a lot of magic circles and derivation formulas written on it, and it can be seen that they are all wind magic.

Several tables leaned against the other wall with various tools and materials for making magic items.

A man dressed in clothes similar to the soldiers outside sat at the table and focused on engraving a magic circle on something, and this man looked like a traveler.

Gunnar obviously didn't want to disturb the man's work, he took Charles and the others to stand at the door, and said in a very soft voice: "I met Mao Shilang last month, and he is now making a piece for me. An epoch-making product."

There was a hint of smugness in his tone, as if he had drawn SSR's seal while showing off his daily tasks to Charles.

Charles and Diana glanced at each other, wondering what surprise this Mao Shilang would bring to the world.

Kaif seems to have just found out about this, but she is curious about Mao Shilang.

After only a while, Mao Shilang finished his work, and when he stretched out, he found Gunnar standing at the door with a handsome guy and two beauties.

Mao Shilang hurriedly got up and walked over, bowing to Gunnar to say hello.

After introducing a few people, Gunnar asked Mao Shilang, "How are you doing?"

Mao Shilang took his shining eyes away from Charles and replied respectfully: "Grand Duke, you can conduct your first experiment today. If the experiment goes well, your dream of flying in the blue sky will soon be fulfilled."

A happy smile appeared on Gunnar's face, and Kaif exclaimed "Ah".

Charles and Diana were also surprised. It would be a good thing for the world if more people went into aviation.

At this time Gunnar asked Charles, "How about it, do you want to invest in Mao Shilang?"

Mao Shilang had just known that Charles was the super rich man in the north, and at this time he was looking at Charles with expectant eyes.

Charles nodded and said, "Let's see the effect."

It is impossible for investors to pay for just listening to a sentence. When the Wright sisters went to Elizabeth to invest, they even made a bicycle. When Intel was founded, at least there were slides for the bigwigs to see.

Gunnar expressed his understanding of Charles' actions and just followed normal procedures.

So Mao Shiro brought everyone to the workbench where he was working just now, and picked up a two-blade propeller that was more than one meter long from the table.

The workmanship of the propeller is good, with a small bearing inlaid in the middle, and several magic circles are engraved on the blade.

It was just that Charles and Diana looked at each other, and then the expression on their faces changed from "curious" to "caring".

Kaif also recognized the role of the magic circle on the wooden piece, and she asked curiously, "Can the wind-based magic circle on this wooden stick take people to the sky?"

Mao Shilang explained to her and Gunnar: "Miss Kafu, Your Excellency the Grand Duke, this is called the propeller, which is the most important part of the aircraft to fly. The magic circle on it can push it to rotate at an extremely fast speed, and then it will It can drive the aircraft to the sky.”

So the "caring" on the faces of Charles and Diana deepened. If Gunnar and the others weren't here, Charles would have pulled Diana away directly.

Gunnar excitedly asked Mao Shilang to conduct experiments quickly, and even helped him carry things to the open space outside.

Mao Shilang's first experiment was very simple. It was to nail a wooden pole to a wooden box as a shaft, and the inlaid bearing on the propeller was inserted into the top of the wooden pole. His plan was to activate the magic circle on the propeller and this thing would be like a helicopter. Fly like that.

Although the experiment is extremely simple, as long as success is a solid first step, you can ask for money, materials, and assistants to speed up research and development in the future.

Kaif was a little nervous, she asked Diana next to her: "Nana, do you think the experiment will be successful?"

Diana kept a formulaic smile and said, "Who knows the results before the experiment begins."

Then Kaif asked Charles, "Hey, do you think this can fly?"

Kaif felt unhappy when she saw this guy who fooled his younger brother into running away from home.

Charles shook his head and said, "Now this can only be used to make a somewhat interesting bamboo dragonfly."

Bamboo dragonflies that can fly with just a handful of hands are not uncommon in the North.

Charles suffered a serious illness when he was four years old and was sent to the "hospital" by his family at Mother St Angel's, where he was in a coma for several days before waking up.

When he got a little better, Mother St. Angel cut a few bamboo dragonflies to help him play on the bed to relieve his boredom. His "Hand of the Mage" was quietly practiced at that time to pick up bamboo dragonflies.

Kaif looked at Charles angrily and said, "How do you know that it can't take people to fly?"

Charles smiled without saying a word. It can't be said that when he took the pilot's license test, the textbook cited the typical wrong practice of engraving the wind magic circle on the blade as an example when talking about the principle of the propeller.

The pulling force of the propeller is mainly based on the pressure difference between the two sides of the blade due to the different airflow speed. In principle, it is the same as the lift provided by the wing.

And directly engraving the magic circle on the propeller to push the propeller to rotate will disturb the airflow, so that the pressure difference will be greatly reduced or even disappear.

After studying for so long, Charles has figured out that magic in this world is divided into energy-based magic and law-based magic.

Magic formed by the flow of magical elements is energy-type magic, and they are the use of magic energy, just like light bulbs and electric motors are the use of electricity, and often seem scientific.

Law-based magic is much more complicated and looks more magical. Diana and other spiritual masters have the right to speak. The curse on Alexei that cannot walk on land, the transformation of a giant dragon and " It just doesn't catch fire" falls into this category.

Now, the magic array on Mao Shiro's propeller belongs to energy-type magic, so this propeller that does not conform to the objective laws will not achieve the expected effect of the design.

Kaif glared at Charles and said nothing.

In the open space, Mao Shilang quickly fixed the propeller to the wooden pole, and after Gunnar stepped back a little, he activated the magic circle above.

With the activation of the magic circle, several powerful airflows spewed out, which not only pushed the propeller to rotate rapidly, but also blew dust on the ground.

Charles looked around the people in the training ground, and no one paid attention to the movement except the instructor-like person who glanced here.

After more than a minute, the propeller gradually slowed down, but the wooden box did not mean to leave the ground at all.

Mao Shilang's expression gradually changed from anticipation to anxiety, and then to panic. He wanted to turn his head to look at Gunnar, but he didn't dare.

There was no change in the product on Gunnar's face. He stretched out a slap and patted Mao Shilang's shoulder, encouraging: "Don't be discouraged, it's okay to fail once, just do better next time."

Mao Shilang suddenly shed tears of gratitude.

Kaif muttered to the side: "What is the big man crying..."

Gunnar looked at Charles~lightnovelpub.net~ and asked, "Charles, do you see what needs to be improved?"

Charles thought for a while, then shook his head and said, "Its power system is fundamentally wrong, and it has to be overturned."

Gunnar turned his head and said to Mao Shilang: "You have to write down Charles' opinion. You don't think he is young, but his master is very powerful."

Charles' face twitched, what kind of logic is this.

Mao Shilang finally carried his things back to his room and continued to work hard. Gunnar took Charles and the others to the arena of the training ground.

"It doesn't seem very optimistic." Gunnar said out of nowhere.

Charles had a question mark on his face.

Gunnar looked at the blue sky and white clouds and continued: "Free flight, I don't know when this dream will come true."

Charles smiled, it seemed that the archduke was still someone who yearned for the blue sky.