The Olympiad Mathematics classroom is a full 600 meters away from the training ground, and there is a howling tower several dozen meters high in between. How can it be hit?

But the testimonies of the twelve training dummies whose heads had been smashed off and Dhaka and several others told them that it was all true.

The puzzled apprentices could only look at Lin En, waiting for his answer.

"It's very simple. All we have to do is know all the data and calculate them," Lynn said with a smile.

During the time he was a professor, he had already used his intelligent brain to record every location in Yieta College, so he had clear information about the location of each training dummy. He only needed to construct the corresponding parabolic trajectory equation and then make fine adjustments based on interference factors such as wind speed.

"For the same attack, I can also replace it with fireball, pyroblast or even more powerful magic!" Lynn added.

Alok and the others couldn't help shrinking their necks. No one wanted to be walking one day when a big fireball fell from the sky and hit their head! This was simply too terrible. They didn't even know how they died!

"Professor Lin, is this the magic technique you developed this week?" Tik, who had been listening, asked in surprise.

"You could say that." Lin En shrugged. He was just wondering how to explain why he had taken a week off for no apparent reason.

"Professor, when can we learn this kind of magic?" Debra raised her hand high and asked curiously.

“Since you want to learn so much, I will organize an exam in Olympiad Mathematics at the end of this month. If someone can answer all the questions correctly, I will make an exception and teach him this improved magic, and even allow him to apply for graduation early.” Lin En made promises to the apprentices.

However, he did not mean to deceive. He did not expect these wizard apprentices to master any profound mathematical knowledge. As long as they could learn most of the elementary and junior high school knowledge, they could apply for graduation.

After all, after becoming a formal wizard, you can continue your studies slowly.

In fact, this exam is also to facilitate Johnny's promotion. After all, she has become an official wizard now, so it is better to obtain the status as soon as possible.

Under the dual stimulation of improving magic and applying for graduation, the wizard apprentices burst out with unimaginable enthusiasm, and each one was more serious than the other when listening to the class.

Pierce was even more excited. Lynn's promise was undoubtedly the only chance for someone with mediocre talent like him to be promoted to a formal wizard.

"Next, we will continue to explain the relevant content of the plane rectangular coordinate system... They are all very basic knowledge." Lin En stretched out his hand, drew a cross in the air with magic, and began to talk incessantly.

After the Mathematical Olympiad class, Alok and the others either pondered or walked out of the classroom in bewilderment, their minds full of so-called absolute values, the first quadrant, the second quadrant, the X-axis, the Y-axis, from this point to that point…

Peirce glanced at the contents of his notes and felt as if he understood them, but also as if he did not fully understand them. He planned to think about them carefully after returning home.

"Sir Tik, please stay..." After packing up the teaching aids, Lin En called out to Tik who was about to leave.

"Professor Lin, what can I do for you?" Tik paused, then spoke again. "The coordinate system concept you proposed in class is very interesting. It seems that it can accurately locate any object in space. I just don't know which master or legendary wizard came up with this idea..."

Compared to the apprentices who were only busy learning superficial knowledge, Tik was very clear about how important this thing was. He guessed that Lin En was able to accurately hit the dummies from a distance of hundreds of meters, and even bypass the entire [Howling Tower], and he must have used this knowledge.

"Descartes...it would be great if I could have the opportunity to meet these masters who have researched mysterious mathematics..." Tik said with emotion. The more he came into contact with it, the more he was surprised at the profundity of this subject.

"Maybe there will be a chance in the future!" Lin En responded with a smile, and then straightened his face and thanked him. "I heard from Luo Er before that you have been helping me with the patent application for the aerospace airship, and I haven't had time to thank you yet."

"It's just a piece of cake. I can't sit through all these Olympiad classes for nothing." Tik laughed. "According to the time, they should be here soon."

After a few polite words, Lin En took the opportunity to ask about alchemy. "I once heard a scholar in the [Secret Law Society] say that some wizards can rely on a certain alchemical formation to improve their strength and break through the upper limit of their power... I wonder if this is true?"

Hearing this, Tik frowned slightly, but still explained.

"Alchemy can indeed do something similar, but few people in the wizarding world do this now."

Tik spoke concisely and did not intend to explain in detail. A hundred years ago, when the management of the wizarding land was loose, the means of promotion of each school could only be described as varied, which caused many unwanted tragedies.

This also involves a scandal that the Wizard Council is reluctant to mention... and it also involves the evil wizard Merck... Tik doesn't want to mention this kind of knowledge too much.

Lin En also noticed this, so he changed the subject and asked about the arrangement and cracking of the alchemy formation.

This time, Tik didn't hide it anymore and explained it to Lin En very patiently.

The two of them chatted all the way to the professor's lounge. When Tik saw the silver-gray-haired witch standing at the door waiting, a smile broke out on his face.

"I'd better go back alone, Professor Lin En..." Tik raised his eyebrows and said jokingly.

As soon as Lin En saw Tik's expression, he knew that the other party must have misunderstood, but before he could explain, Tik turned around and left tactfully.

Lynn shook her head, opened the room, and invited the witch in before asking.

"Johnny, after the promotion yesterday, is your body feeling well?"

The silver-gray-haired witch shook her head and looked at Lin En in confusion. "Why do you ask? Is there something wrong?"

"No, there's nothing wrong. I'm just asking." Lynn shook his head. It seemed that the potion Johnny took was not strong enough to make the Eye of Death appear in his sea of ​​consciousness.

"Next, let's get down to business. We only have two hours!" Lin En looked at the witch and urged.

(End of this chapter)