Although Chu Yun has never experienced a real glider, he has seen a lot of it in TV movies. There are many irrationalities in Lyza's extremely magic-dependent glider, and being able to glide without falling to her death can only be said to be powerful in her mana.

"You, what do you mean, don't buy what you don't want to buy, why insult Miss's work!" Lysa couldn't help herself before she could speak.

Miss Lysa is noble but approachable enough to treat herself like a sister, and she is also a gifted magician and a gifted alchemist. In the face of the family's marriage contract, she is an idol in Ella's mind and cannot be desecrated by anyone.

"Wait Ella, listen to what he has to say, and if he's here to cause trouble, I'll teach him a lesson myself. Lysa calmed Ella's little emotion.

She knows that her work is inadequate, but no one has been willing to discuss joint research with her, and there are very few such products on the market that cannot be referenced.

Although the man in front of her spoke politely, she didn't know why she always felt that Chu Yun was trustworthy.

This is by no means simply because Chu Yun is handsome, this may have something to do with the unique temperament he exudes.

"I'm very interested in this product, and I can give you some suggestions if you can improve the existing product and make me happy as a result. I can give you the skins of the thunder rays, and of course you will need to give me a finished product in return. ”

"If it's just a glider of this level, to be honest, I think it's just as violent. Chu Yun continued to say his thoughts, not estimating Lysa's feelings at all.

If the other party can't even accept this criticism, then there is nothing to say. He doesn't need such semi-finished products either.

Lysa took a deep breath, resisting the urge to release the wind blade to cut the man in front of her into flesh.

"Can you tell me what's wrong with this 'flying wing'?" asked Lysa through gritted teeth, especially accentuating the three words flying wing.

The other party's one glider made her very dissatisfied.

Chu Yun thought about how to explain to her, the civilization of this world is not backward, but the development direction is different from the earth, so the focus is not the same, and the addition of the science and technology tree is seriously biased.

"Your glider mimics the wings of a bird, but your flying principle is completely different from it, how can you copy it?"

Lysa's current flying wings are two pairs of wings on the left and right, in fact, Chu Yun wants to call it a parachute, but he just uses the wind magic array to forcibly make the flying wings glide.

In fact, humans on Earth had a similar idea when they first started studying flight.

"Have you ever seen a ship?"

"Of course I do, but what does this have to do with flying wings?" Lysa was a little puzzled.

"Have you studied the shape and structure of the ship?"

"Shape...... Looks like the front of the ship usually has an angle?"

Chu Yun nodded: "This shape can make the boat better break the current, and the same principle applies in the air." ”

Saying that, Chu Yun came to the table and found a blank piece of paper, and Lysa thought that Chu Yun was going to draw and handed him a pen. However, Chu Yun folded the paper, and soon a paper airplane appeared in Chu Yun's hand.

The front of the paper airplane has the same angle as the boat, which corresponds to the one he just explained.

Then Chu Yun threw it lightly in his hand, and the paper airplane flew out of the door with a graceful arc. A breeze blew, and the height of the paper airplane not only did not decrease, but flew higher, flying dozens of meters away, and then slowly landed on the puddle of the road.

Lysa's eyes widened, and she rushed out of the door as she looked at Ella's puzzled gaze, carefully picking up the paper airplane that had fallen on the beach.

"It's amazing, why can paper fly so far? Is it magic?"

"No, he was using my paper just now, and he didn't have any magic fluctuations. ”

Lysa tried to throw out the paper plane according to Chu Yun's method just now, although it was stained with a little water, the paper plane was still flying freely in the air.

Lysa came to Chu Yun thoughtfully, and this time her attitude was much better: "Mr. Chu Yun, are you also an alchemist, what kind of magic principle did you use just now?"

Chu Yun was a little proud when he saw the change in the other party's attitude, after all, this was the ancestral paper airplane folding method, and he had won the championship in the kindergarten airplane competition.

"It's not a magical principle, it's a rule that makes use of events and everything, and you can call it 'physics'. ”

"Physics is really a great science, if my flying wings are made according to this structure, I can save a lot of magic array!" Lysa was eager to ask for more physics knowledge, but she knew that this precious knowledge would not be revealed too much.

"Although this model can fly far, it is not suitable for manning, and there is still a lot of room for improvement. Chu Yun found another piece of paper, "Give me your pen." ”

"Okay, okay. Like an obedient and good student, Lysa obediently handed over her beloved bone pen made from the feathers of an immortal bird.

Chu Yun found a simple ruler and used perspective to draw, presenting the flying wings on the earth in front of Lysa in a very three-dimensional way. Lysa was interested in this method of cartography, but focused more on the construction of the flying wings.

"It's a piece of equipment that can fly and slide from a high place even if you don't borrow magic. It is composed of four parts: tower, keel, tripod and sling, and each part is connected by steel cables. As long as you have a suitable hillside and run 5-6 steps against the wind, you can soar into the sky. When it moves relative to the air, it generates lift and drag on the wing due to the action of the air, so that it can carry people into the air for gliding flight......"

There are some things that Chu Yun doesn't know if what he said is accurate or not, and he is not a professional. But it was enough to explain to Lysa, and she nodded her head in a daze, and the brilliance in her eyes became brighter and brighter.

"These are just triangular gliders made from ordinary materials without the use of magic. If you can add magic to this and develop a more perfect flying wing that satisfies me, I can consider providing the materials for you to use. ”

Lysa is a girl who is becoming more and more frustrated, she is not depressed by the failure of her work, and after listening to Chu Yun's patient explanation, it seems that the door to a new world has been opened.

"I'm going to start improving right away!

"Thank you, thank you so much!" Lysa saw hope and saw the dawn of victory, so she was very grateful to Chu Yun.

"Don't worry, if the product is really successfully researched, I will put your name first in the alchemy patent when the time comes!" Lysa said solemnly.

Chu Yun smiled slightly and left the workshop noncommittally.

Before leaving, Lysa wanted to ask Chu Yun's address so that it would be easy to contact, and Chu Yun didn't know where he was going to live, so the two agreed to meet here again after the goddess festival.