Hand-cranked fans, miniature steam boats, wooden flying wings, and many large-scale, elaborate models of horse-drawn carriages and houses, Lynn even saw a prototype of a waterwheel in the middle of the workshop.

It is a round wooden wheel, about 1 meter in diameter, and the water in the cistern above the workshop is constantly sliding down, driving the wheel to rotate constantly, and at the same time, it also drives the giant fan in front of it to rotate slowly, providing a cool breeze for the guests entering the workshop.

It's really overkill......

Lynn shook her head, this thing was used to irrigate the fields, and even to generate electricity, but Lydia only thought about using it for the power of the fan.

When Darren saw Lynn's shaking his head and sighing, his heart immediately rose to his throat, although these gadgets made by Lydia were very interesting, they certainly couldn't be compared to the alchemy tools of wizards.

Fortunately, Lynn didn't mean to sell it, and said directly.

"I'm not here to buy goods, but to ask you to make something according to the drawings."

As he spoke, Lynn picked up the model of the steamship and looked at it a few times, this model is very exquisite, almost restored to equal scale, down to every detail.

From the chimney to the cabin to the hull, it was exactly the same as the steamships he had seen at sea, except for a rope at the back of the cabin that could spin the propellers below when pulled.

Almost instantly, Lynn guessed how it worked, and a smile appeared on the corner of her mouth, and she asked again.

"I've heard that Lydia has a good hand and can always make things exactly as required, right?"

"Of course, I dare say that there is no one better at this seaport of Iyeta than Lydia!" Darren said very confidently, even many wizards were full of praise after seeing Lydia's gadgets, and only then did they have the name of "Skillful Hand".

"Is she in the workshop now?" Lynn set the model aside, "I wanted to see for myself if she could live up to my requirements." ”

"No problem, Lydia is working in the backyard right now...... I'll take you to her! Darren quickly jumped off the stool, hung up a rest sign, and opened the door to the backyard of the workshop.

Lynn walked in with Darren, and at a glance saw the large flying machine he had seen before, and the halfling he was looking for, Lydia, was standing underneath the flying machine, holding a hammer the length of half her body, and smashed several thick iron nails into the wings of the flying machine.

After all this, Lydia wiped the beads of sweat from her head, and then tugged the wing with her hand, the joint was very strong, but the stability was still a little worse, which is why some parts of the aircraft fell apart directly after landing.

The halfling girl didn't notice the two people who entered the door at all, her brows were slightly furrowed, and her robe was already covered with dirt and dust, but she didn't care, her mind was full of how to improve the flying machine.

At this moment, Lynn's voice suddenly rang out.

"Since the quadrilateral is not stable enough, why not try adding a beam diagonally to it and transform it into two triangular structures?"

Lydia was stunned for a moment, then immediately turned her head, only to find Darren and Lynn standing beside her.

"Wizard-sama?" The halfling girl shouted in disbelief, and she quickly recognized Lynn, who had had a brief meeting in the square before.

"You can give it a try!" Lynn pointed to the wings of the aircraft and said with a smile.

Lydia was not frightened, as she pulled up her sleeves and lifted a well-sized plank with both hands, placing it diagonally on either side of the wing, and picked up the hammer and nails, and the bell kept banging.

That's a lot of strength......

Lynn was very surprised to look at Lydia, who was only about 1.3 meters tall, and easily lifted the plank that might be bigger than herself, and the rumor that the halfling was naturally strong was really not blown.

This is not at all in line with biological ...... Lynn looked at the halfling girl's barely "strong" arm, and couldn't help but complain in his heart, and then instructed the other party to build brackets everywhere in the aircraft to strengthen the overall structure, and removed a lot of unnecessary structures to reduce the weight of the body itself.

Darren also hurriedly stepped forward to help, and after working for a while, the whole aircraft took on a new look, the wide wings on both sides were connected with the fuselage in a triangular structure, Lydia pressed her hand on the wing and shook it violently a few times, and then knocked it with a hammer, but there was no slightest deformation.

"It's simply ...... That's great! The joy on Lydia's face was about to overflow, and then she turned to look at Lynn again, and asked in confusion. But why? ”

She noticed the difference when she was making those models on a daily basis, but she didn't understand why it was happening.

"Because the three sides of the triangle are connected end to end, they form a very stable structure, and you only need to do a force analysis...... Lynn said, taking a few sticks of wood, putting them together into trilateral, quadrilateral, and pentagonal shapes, and then dragging any of their sides and any corner to demonstrate the force changes of these polygons.

Lydia sat on the wing of the aircraft, her bright eyes staring at the wooden stick in Lynn's hand, like a student listening to a lecture, forgetting for a moment that Lynn and herself in front of her were only meeting for the second time.

However, Lynn's course is not so easy to understand, there is a wooden demonstration in the first half, Lydia can still understand some of it, and then she can understand what the center of gravity, wind resistance, and friction are explained in a fog.

Only two conclusions were drawn.

First, the wizard in front of him was very knowledgeable and knew a lot of things. Second, whether the aircraft can fly or not may have something to do with these forces......

After talking for a while, Lynn smashed her mouth, and the halfling girl immediately understood, jumped off the wing, ran to the room, took the kettle, poured a glass of water, and handed it to Lynn's hand, and then looked at each other with a blank eye, and asked.

"Sorcerer-sama, can this flying machine fly now?"

"If you just want to stay in the sky for a little longer, that's fine, but if you want to fly freely in the sky, I'm afraid not!" Lynn shook his head, "The power of this aircraft is too poor, and the shape and structure are not quite in line with the hydrodynamic ......"

The halfling girl looked dazed, and she could barely understand the power, but what was fluid mechanics?

In just half an hour, she heard many high-end words that had never been heard of before, and Lydia's whole person was like a kitten that saw a plush ball, but couldn't scratch it, looking pitiful.

"Wizard-sama?" Darren on the side was a little worried, and couldn't help but interrupt, although he also wanted to hear this knowledge, but he knew a truth, in the wizarding land, all knowledge is very valuable!

Lynn looked like she had just reversed, and the corners of her mouth curled into a smile. "Sorry, it's a professional problem......"

"I haven't been introduced yet, my name is Lynn, and I'm the new professor of Olympiad mathematics at Iyeta Academy!"

"Is that the rumored Olympiad professor who scared a student unconscious on the first day of class?" Darren exclaimed.

The corners of Lynn's mouth twitched involuntarily, and she looked at Darren very kindly.

If you can't speak, you'd better shut me up!

(PS: The data of the first few days of the week is very important, especially to catch up, it is not easy to get new books, and please support a lot...... ）