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Applying for a student as a professor is one solution, but it is not without problems.

Firstly, he had only been teaching Arcane Mathematics for half a month, and it was a bit too hasty to suddenly say that a student could graduate successfully. It would easily arouse suspicion. What's more, he had just obtained the status of a formal wizard, and the Wizard Council was unlikely to approve such an outrageous application.

Therefore, this method can only be used as a last resort. If he is willing to wait for a few months, things will go much smoother.

The second is to obtain it through some possible black markets.

The free fall experiment in the morning earned him 69 magic gold coins at one time. The airship can also bring him a considerable income. He can also get some research funds from Helram. It should not be a problem to collect 200 to 300 magic gold coins within a week. It should be enough.

However, there is still a lack of corresponding purchasing channels, and sometimes even if you have money, you may not be able to spend it...

Perhaps we can start with those apprentices who have no hope of being promoted to formal wizards. These people are usually the most anxious.

Another way is to disguise your identity and go to places where there are a lot of people to gather intelligence.

Some thoughts kept flowing in Lin En's mind. Suddenly, the orderly elements around him were directly disrupted. Various elements collided and mixed together, almost causing an explosion. Lin En hurriedly gathered his thoughts and began to meditate with concentration.

……

The next morning, after meditating all night, Lin En got out of bed, feeling the magic power filling his body.

On the desk nearby, the goblins had already placed the prepared breakfast there.

A piece of white bread, a grilled sausage and some magic tree juice that has a refreshing effect.

After a simple wash, Lin En placed his hands on the ingredients, checked the elemental composition, and made sure there was no problem before he began to eat slowly.

'071, how much energy is left?' While eating, Lin En asked in his mind.

【Energy remaining 25.6%.】

Is that all?

Lin En paused while cutting the sausage. After arriving at the wizard's land, the system's energy reserves once increased to more than 50% because there were no battles on weekdays.

However, in order to condense his magic, he practiced [Liquid Nitrogen - Ice Field] several times a day, which consumed a lot of energy. In addition, he had to deal with the wizard level assessment and Roll's challenge yesterday, so in just a few days, the energy reserves of the intelligent brain decreased instead of increased, and only half of the original amount remained.

Before he truly becomes a formal wizard, if he wants to fight with all his strength, the power of the intelligent brain is indispensable.

But the replenishment of this energy... is too slow!

Lin En shook his head, ate the last piece of grilled sausage, drank the juice of the magic tree, then got up and went out. He had an Olympiad math class to attend this morning.

As soon as he walked out of the professors' residence, Lin En's face suddenly showed a look of surprise, because he suddenly discovered that Yieta College had a new iconic building overnight, standing not far from the entrance.

A large number of goblins were busy surrounding the building and doing the final repairs.

It was a pair of giant hands made of pure white marble, with extremely delicate carvings from the palm lines to the knuckles. They were more than thirty meters high, and there were two beads, one large and one small, placed in the palm of each hand, holding them up to the sky.

On the pure white marble, the entire process of the free fall experiment is recorded in detail in the form of runes engraved on it.

The name of this sculpture is - [Lynn's Double Ball Experiment]!

Chapter 81: Sudden Death News

Boy, I'm Galileo...

Just as Lin En was silently complaining in his heart, a voice sounded behind him.

"How do you feel? Are you satisfied, Professor Lin En?"

The person who spoke was Tik, the alchemist from the City of Wizards, who was stroking his beard complacently.

After Lynn ran away last night under the pretext of being drunk, a group of professors discussed how to record the shocking experiment this morning in the form of a sculpture.

This is one of the highest honors in the entire academy!

This means that every student who joins Yieta College in the future will be able to admire each other's deeds the moment they walk into the college gate.

He also made some small suggestions on the external form of the sculpture. With the help of the magic of several professors and the hard work of the goblins day and night, it was completed in just half a day.

“It looks... well... very shocking..." Lin En said against his will. In fact, he felt that the artistic level of this sculpture was just average.

Tik himself was very satisfied with this work. He did not hear any perfunctory tone in the other party's words. Instead, on the way to the O'Math classroom, he explained to Lin En how to express a wizard's inner thoughts through sculpture.

Lynn kept a polite smile on his face the entire time, until he stepped into the classroom, when he put on a solemn expression.

After the class division, the number of students in the entire elite class was reduced a lot, with only forty-six people left.

No, from today on, I'm afraid it will become forty-seven people.

Because there is one more Lydia!

At this moment, the half-orc girl was sitting at the front of the classroom. Due to her short stature, her desk and chair were special and one size smaller than those of others. She looked very awkward. When Lin En entered the room, his first sight was focused on her.

Facing Lin En's gaze, Lydia did not tremble like other students. Instead, she held up a parchment scroll with great anticipation and said impatiently, "Professor, can we start the class now?"

Elroc, Pierce and the others looked at Lydia with a hint of pity and nostalgia in their eyes. They vaguely remembered that they were also so excited on the first day of the Olympiad class.

"Since everyone is so impatient, let's start the class now!" Lin En turned to look at the gray-haired witch and said.

"Johnny, collect everyone's homework..."

"I've given you a whole day. I believe you have already calculated the data of the Lookout?" Lin En said with a smile.

As soon as these words were spoken, there was a wailing in the classroom.

As members of the elite class of Olympiad mathematics, each of them has a good talent for arithmetic, but the structure of the Outlook airship is very complicated, and the easiest airship airbag to calculate is still elliptical.

Even though Lin En had taught the corresponding formula before and provided some data, it was still extremely difficult to calculate it accurately.

But no matter how reluctant they were, they had to hand over the calculation manuscripts, and Lydia was no exception.

In fact, during the more than half a month of making the airship, every time Lin En took the time to explain the blueprints to her, he would also explain many geometric formulas and theorems, so her learning progress was actually not slower than that of the students in these elite classes.

Lynn took the parchment rolls that Johnny had collected, and when he saw the first one, he couldn't help but frowned and said, "Debra, why are there only the volumes of the airbags and the cockpit, where is the tail wing?"

"But you didn't give the data of the airship's tail wing..." The red-haired witch stood up and said weakly.

"But it can be calculated, right?" Lin En looked at the wizards present and explained.

"The shape of the tail can be divided into a right triangle and a square. I gave you a proportional plane diagram. If you pay attention, you can find that one of the hypotenuses of the cockpit is parallel to the hypotenuse of the airship's tail, and the length is the same. Since we have the hypotenuse data, we can easily calculate the other data using the Pythagorean theorem..."

This is not easy at all... The red-haired witch had a sad face.

Lin En was merciless and said directly, "Go back and copy the corresponding formula fifty times! Also, before the get out of class ends, recalculate the data for me!"

The students in the audience couldn't help but shrink their necks. They were unable to calculate the area of ​​the tail wing.

"What is this Pythagorean theorem?" Tik turned his head to look at Alok beside him and asked in confusion.

"It's an operation rule discovered by the professor. In a right triangle on a plane, the sum of the squares of the two right-angled sides will be equal to the square of the hypotenuse..." Alok looked at his notebook several times to make sure he was not wrong, and his expression was vaguely excited.

Having participated in yesterday's awarding ceremony, he naturally knew that he was facing a three-ring wizard and alchemy master!

Such a big shot is actually asking me questions!

Alok felt that this was probably the most glorious moment in his life!

"What is square?" Tik asked. These nouns were unfamiliar words to him.

"Squaring is just the product of the same two numbers..." Alok was so sure that he didn't even look at the formula in his notebook. He then introduced the area formulas of circles and polygons to the master alchemist.

A look of understanding appeared on Tik's face. When he was learning to draw magic array patterns, he did notice similar rules, but he did not summarize the rules of each shape like Lin En and formed an independent subject.

Some alchemists in the Wizard City like to ponder these things. I heard that someone even pushed the value of pi to the ninth decimal place, which is so accurate that it cannot be more accurate...

Alok glanced at Lin En on the stage, and estimated that it would not be too soon for him to talk about his homework. A bold idea suddenly emerged in his mind. He looked at Tik and spoke nervously.

"Mr. Tik, some time ago, Professor Lin En invented an interesting game. I wonder if you are interested?"

"What game?" Tik was somewhat curious.

Alok immediately became excited, picked up the quill, and casually drew a three-by-six square on the parchment. After thinking for a while, he crossed out the last square, and then explained the rules of the game again.

"Starting from a copper coin, the amount in the next box must be doubled compared to the previous box?" Tik repeated, and then wondered why Alok specifically crossed out a box.

"Yes, as long as you can fill all the grids, these ten gold coins will be yours!" Alok took out all his savings and then continued, "But any corresponding coins you put down will also be mine!"

The difference between one copper coin and ten gold coins is a full 100,000 times...

Tik became more and more interested in this game. He calculated silently in his mind, and then picked up a pen to fill in the squares.

When filling in the last number, Tik exclaimed in surprise and said with interest.

"Interesting, really interesting!"

The seventeenth square is sixty-five thousand five hundred and thirty-six, so the sum of all the numbers is...

"The total is 131,071 copper coins!" Alok responded quickly.

Tik spent a dozen seconds simply adding it, and it was exactly the same.

He knew from the beginning that he would lose. After all, the wizard apprentice in front of him would not give him money for nothing. However, he did not expect that the addition of the small seventeen squares would increase the initial value by 130,000 times.

So, did the other party deliberately cross out a box because he was worried that the amount was too large and he would regret it?

Tik was at a loss whether to laugh or cry. Since he didn't bring any silver or copper coins, he simply took out four magic gold coins and placed them on the table. He always accepted defeat in a gamble!

"Three gold coins are enough!" Alok didn't dare to ask for more and quickly pushed one back.

The alchemist in front of him was not the first person to be tricked by him. After being defeated by Professor Lin En, he went home and immediately played this checkered game with his father Albert.

In the end, he theoretically won all the family property, and Albert even owed him tens of thousands of gold coins... But in the end, he didn't get a penny and was severely beaten!

At this point he understood a truth: being too greedy would get you beaten...

Fortunately, this alchemist master is a man of his words!

Alok happily accepted the three gold coins, but the next second he heard a familiar voice on the stage.

"Alok, since you know all the Olympiad formulas like the back of your hand, why don't you come up on stage and explain them to everyone?"

The joyful expression on the face of the fifteen or sixteen-year-old boy suddenly froze. He shivered continuously and stood up tremblingly.

Lynn looked at him very "kindly".

Good boy, you are really good at using the knowledge I taught you to trick others!

Under the gloating eyes of the students, Alok had no choice but to walk to the podium, pick up a parchment scroll, and stumble over his shallow knowledge of Olympiad mathematics...

Alok had never felt that time was so long in his life. He had forgotten everything in his mind due to nervousness. There were bursts of laughter from the audience from time to time. In the end, he only stayed on the stage for more than ten minutes before being expelled.

Taking into account the learning progress of Tik and Lydia, Lin En reviewed the geometry formulas that had been taught before in the next class.