"In other words, as long as you go deep into the jungle of Atlantis, you will definitely lose your way?"

Levi nodded, "So many sages have done exploration, and no one is exempt. ”

"Horizontally, it is a peak on the side of the ridge, and the height is different from far and near. I don't know the true face of Lushan, only because I am in this mountain. "If we are bound to lose our way in the forest, why can't we jump out of the forest and look at Atlantis from another angle?"

"What do you mean?", Medea asked with some awkwardness, "you always utter words that are difficult to understand. ”

"It's just a metaphor, don't care. "I mean, can you observe Atlantis in the sky and find out what secrets this place is?"

"It's like a painting, if we look at the picture at eye level, it's hard to see what the painting is about, but if you look at the painting from above, it's clear at a glance. ”

"You mean, let me fly up with the Sky Dance?", Medea shook her head, "There are strong winds from time to time, and my Sky Dance is ultimately a magic that manipulates the wind and air currents, and it cannot be performed in this environment. ”

"The wind is a real obstacle, but in turn we can use it as a help. For example, we can make a large kite and tie a person to it so that it can fly into the air. ”

"It's really hard to get a person into the air, but in this windy environment, it's possible, and the strong wind can easily lift a person into the air. ", Al replied.

"Big kite? This idea you mentioned had been tried before, but he failed and paid with his life. Old Master Levy disagreed, he was very knowledgeable and knew a lot of historical anecdotes.

"Atlantis is a harsh environment that is far beyond what people think. The strong wind on the ground is unbearable, not to mention that in the air, the wind may be several times that of the ground, or even dozens of times, such a strong wind is not something that a kite can support. No matter how strong the material is, the thin wings of the kite will be torn to pieces in the air. ”

"Of course, kites made of materials like wood and cloth can't be used, only iron can withstand such strong winds!" replied Al.

"Iron, you mean a kite made of iron, how can that kite fly?", Medea and Levi both thought Al was whimsical.

"Of course, a structure like a regular kite can't be used. As he spoke, Al took the pen and paper and began to draw, "Like this, the top is a larger, extended oval, and the lower part is a flatter arc. ”

"The wings created in this way, combined with the winds that are unique to Atlantis, make it possible to fly into the sky. ”

"Really?", Levi's face was full of suspicion, obviously not convinced, but Medea was full of confidence in Al, "You always have such great ideas, and many of them have turned out to be true. ”

"What is the principle of such a structure?", Levi asked.

"It's actually an imitation of a bird's wings, which is very common in our daily lives, and I call it biomimicry. Al explained.

"For example, the saws that are commonly used in carpentry, the saws on them are actually imitations of the leaves of some plants. We've all had our fingers cut off by weeds, and it's the jagged teeth on the leaves of these plants that inspire people. ”

"For example, the oars used for rowing actually mimic the shape of the fins of fish, so they can be rowed in the water with less effort. ”

"And this two-wing structure is actually imitating the wings of a bird, and if you look closely, you can see that the structure is similar. Al explained in detail, and even put forward the concept of "biomimicry" on the earth.

To make this clearer, Al summoned one of the guards and ordered, "Shoot down a bird, send it over, don't hurt its wings." ”

Naturally, there are good hands with arrows in the Thorn Castle, and it is not difficult to shoot down the birds, and after a while, a dead eagle eagle is sent over.

Al stretched out the eagle's wings and said, "Look, is the shape of the eagle's wings very similar to what I drew?"

Medea and Levi were also amazed, "That's true." ”

"That's what I thought, such an eagle owl is extremely heavy. Al shook it with his hand, "How can there be one or twenty pounds, right? There must be a mystery and reason why such a heavy weight can fly freely in the air." As long as we imitate the body structure of this eagle, it is not impossible to send a manned aircraft made of iron into the air. ”

"Not to mention the strong winds in Atlantis, which helps us in this plan. ”

"It's amazing, it's amazing to be able to observe this truth from ordinary birds. I can understand why Medea thinks so highly of you, Master El. Levi gave Al a meaningful look.

Al was a little uncomfortable by his glance, and hurriedly said: "Of course, these wings alone are not enough, this eagle's body structure has other advantages. ”

As he spoke, Al dissected the eagle's body and explained, "You see, its body bones are hollowed out, so that it can reduce its weight as much as possible and make it easier to fly. I think the same should be true for the aircraft we are going to build, and we should reduce the weight as much as possible while maintaining structural stability and not being damaged by such strong winds. ”

"After all, it's not easy to send a large lump of iron into the air. ”

"So the structure of the aircraft should also use this hollowing method?" Medea asked.

Al nodded, "That's what I think, like these wings, which are made of iron pieces made of fine iron, and fastened with rivets. In the middle of the wings is a slightly round belly with crystals underneath, and the observer hides in it. ”

"The entire aircraft needs to be made of a lightweight, but extremely strong material, which can withstand the tearing of strong winds in all directions in the air and not fall apart. ”

"Ironwood! It should be light in weight and strong in quality, and the most qualified one is ironwood. Medea blurted out.

"That's right. Al nodded and smiled, "And I happen to know that there is a person who now has a large amount of ironwood in his hands. ”