Last night Diana stayed at the San Siro Palace, and Cav Nodal, Gunnar's daughter and heir to the Grand Duke of Milan, and Diana slept together.

Charles began to sleep alone in the guest room, and not long after he was in bed, a little girl about his age came and wanted to climb into his bed, and Charles jumped out of bed in fright.

Not long after the little girl was asked out by Charles, a big sister pushed open the bedroom door, and after the big sister was asked to leave, the little brother came to the door.

So Charles hurriedly got dressed and ran away, and met Uncle Qiang who was about to come to the door in the corridor.

The next morning, when Charles returned to the San Siro Palace for breakfast, she learned that it was Carf who had done it last night, and she didn't believe that Charles didn't steal.

The matter of renting land and buying a house in Jiuyang Chamber of Commerce was discussed during breakfast, and after breakfast, President Diana signed the lease agreement and the purchase contract.

The Nodals had a castle not far east of Milan, where the Nodals' private soldiers were stationed, and where the young men trained by the Nodals were trained.

Perched on top of a hill, the castle guards the eastern side of the city of Milan.

Today Kaf also came along, her long silver hair tied into a braided back of her head, wearing a knight's suit, with a sword hanging from her waist, looking heroic.

Diana, who talked and laughed with Kafu along the way, also changed into a similar dress to her, and the knight's uniform worn by Diana should have been Kafu a few years ago.

There were quite a few people training on the training ground outside the castle, and Gunnar said to Charles, "I'll take you to see an interesting guy first." ”

There is a row of houses on the edge of the training ground, which are used for the maintenance and repair of weapons and equipment, and the medical room is also here.

Gunnar led the group to a house.

There was a large blackboard hanging against the wall in the house, on which were written and drawn a lot of magic arrays and derivation formulas, which could be seen to be wind magic.

Several tables leaned against another wall, on which were various tools and materials for making magical items.

A man dressed in similar clothes to the soldiers outside sat at the table, intently carving a magic circle into something, and this person looked like a traverser.

Gunnar obviously didn't want to disturb the man's work, he took Charles and they stood in the doorway, and said in a very soft voice: "Mao Shiro is what I met last month, and he is now building an epoch-making product for me. ”

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

Charles and Diana glanced at each other, curious to see what surprises this Chigashiro would bring to the world.

Kafu also seemed to know about it, but she was curious about the person who was Chishiro.

After only a few moments, Kayashiro finished his work, and when he stretched, he found Gunnar standing in the doorway with a handsome man and two beautiful women.

Mao Shiro hurriedly got up and walked over, bowing to Gunnar and saying hello.

After introducing a few people, Gunnar asked Gerushiro, "How is what you said?"

Mao Shiro withdrew his shining eyes from Charles's body and replied respectfully, "Grand Duke, you can conduct the first experiment today." If the experiment goes well, it won't be long before your dream of soaring into the skies will come true. ”

A happy smile appeared on Gunnar's face, and Cafu exclaimed "ah".

Charles and Diana were also surprised, if more people were involved in aviation, it would be a good thing for the world.

At this time, Gunnar asked Charles, "How about it, do you want to give Mao Shiro some investment?"

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

Charles nodded and said, "I'll see how it works." ”

Investors can't just listen to a sentence and pay for it, when the Wright sisters went to Elizabeth to invest, they also made a bicycle, and when Intel was founded, at least there were slides for the bigwigs to see.

Gunnar expressed his understanding of Charles's approach and just went through the normal process.

So Mao Shiro led everyone to the workbench where he had just worked, and picked up a two-bladed propeller more than one meter long from the table.

The propeller is well made, with a small bearing inlaid in the middle, and several magic arrays engraved on the blades.

It's just that Charles and Diana glanced at each other, and then the expression on their faces changed from "curiosity" to "caring".

Kafu also recognized the effect of the magic array on the wooden chip, and she asked curiously, "The wind magic array on this wooden bar can bring people to the sky?"

Mao Shiro explained to her and Gunnar, "Miss Kaf, Your Excellency, this is called the propeller, and it is the most important part of the aircraft to fly. The magic array above can propel it to spin at a very fast speed, and then it can drive the aircraft into the sky. ”

So the degree of "love" on the expressions on Charles and Diana's faces deepened, if it weren't for Gunnar and them here, Charles would have pulled Diana away directly.

Gunnar excitedly asked Kayashiro to hurry up and conduct the experiment, and even helped him carry his things outside to the open space.

Gerushiro's first experiment was simple, he nailed a wooden pole to a wooden box, and the bearings embedded in the propeller were inserted into the top of the wooden pole, and his plan was to activate the magic array on the propeller, which would fly like a helicopter.

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

Carf was a little nervous, and she asked Diana beside her, "Nana, do you think the experiment will be successful?"

Diana kept a formulaic smile and said, "Who knows the outcome of the experiment before it starts." ”

Then Kraft asked Charles, "Hey, did you think this could fly?"

Kafu was upset when she saw this Ru who had fooled her 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 a pinch of both hands are not uncommon in the Northland.

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

When he was a little better, Grandma St. Angel personally cut a few bamboo dragonflies for him to play on the bed to relieve his boredom, and his "mage's hand" was quietly practiced at that time in order to pick up bamboo dragonflies and come back.

Carve looked at Charles a little unhappily and said, "How do you know it can't fly with people?"

Charles laughed and said nothing, it can't be said that when he was taking the plane driver's license, the textbook cited this typical mistake of inscribed the wind magic array on the blades when talking about the propeller principle.

The pulling force of the propeller mainly depends on the pressure difference between the two sides of the blade due to the difference in air velocity, which is the same as the lift provided by the wing.

And directly inscribed on the propeller to push the propeller to rotate will disturb the airflow, so that the pressure difference is greatly reduced or even disappear, it is better to directly make the magic array carved bricks into jet bricks.

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

Magic formed through the flow of magical elements is energy-based magic, and they are the use of magic as energy, just as light bulbs and electric motors are both uses of electrical energy, and often seem scientific.

Rule-based magic is much more complex and more magical, and this is something that only spiritualists like Diana have a say, as is Alexei's curse on the land that can't walk on land, the transformation of the dragon, and "just don't let it catch fire".

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

Carf glared at Charles and said nothing more.

In the clearing, Gerushiro quickly fixed the propeller to the wooden pole and activated the magic circle above it after Gunnar stepped back a bit.

As the magic array activated, several powerful air currents erupted, not only pushing the propellers to spin rapidly, but also blowing up the dust on the ground.

Charles glanced around the training ground, and no one paid attention to the movement except for the instructor-looking person who glanced in this direction.

After a minute or so, the propeller slowed down, but the wooden box had no intention of leaving the ground.

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

The product on Gunnar's face did not change, he stretched out his slap and patted Mao Shiro's shoulder, encouraging: "Don't be discouraged, it's nothing if you fail once, just do better next time." ”

Mao Shiro suddenly shed tears of gratitude.

Carf muttered on the side: "What is the big man crying about......"

Gunnar looked at Charles and asked, "Charles, do you see what you can improve on this?"

Charles thought for a moment, shook his head and said, "Its powertrain is fundamentally wrong, and it has to be reversed." ”

Gunnar turned his head and said to Mao Shilang: "You have to take note of Charles's opinion, don't look at his young age, but his master is very powerful." ”

Charles's face tugged, what kind of logic is this.

Eventually carrying his things back to his room and continuing his efforts, Gunnar led Charles and them to the ring at the training ground.

"It doesn't seem very optimistic. Gunnar came 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 seems that the Grand Duke is still a person who yearns for the blue sky.