Without further ado, Xu Yi walked through the door. Suddenly, all eyes were on him. The oily middle-aged man stared at Xu Yi. Xu Yi leaned forward and said in a low voice, "The principal is looking for you. It's urgent."
After speaking, turn around and leave.
The oily middle-aged man was stunned, and waved his hand, "Everyone should study by themselves first, and the homework is the after-school exercises for the three units. When the bell rings, everyone should go by themselves."
After saying that, he hurriedly chased after Xu Yi, "Hey, which teacher are you, why haven't I seen it before?"
He looked at Xu Yi's cool and frivolous short-sleeved shorts, and murmured in his heart.
Xu Yi said, "I'm Teacher Xu, who is new to the school office. Secretary Cui, the discipline inspector, is at the school office. Hurry up. I think Secretary Cui is very angry."
He remembered the names of the school leaders quite well when he was flying past the school affairs fence.
The oily middle-aged man's body suddenly softened, and Xu Yi held him up, "When the situation comes to an end, you don't want to just walk away, think about your own problems carefully, and strive for leniency."
"I, I really..."
The oily middle-aged man still has to cry.
Xu Yi sighed, and said, "I'm also soft-hearted, that's all, you hurry to wash, this sweating, by the way, calm down."
The oily middle-aged man ran towards the rest room in a panic as if he had received an amnesty, followed by Xu Yi.
He ran up to the innermost room on the sixth floor, and the middle-aged man opened the door. Xu Yi then entered, closed the door, and dragged the middle-aged man onto a chair and sat down, "Brother, what are you doing?" Don't ask, just tell me about calculus."
The oily middle-aged man was stunned, staring at Xu Yi like a monster.
Xu Yi didn't have time to explain to him, so he took out a kitchen knife that he had brought along when he ran past the residential area, and cut his arm without saying a word.
There was nothing bloody and more impactful, and the oily middle-aged man became quiet for an instant, and he no longer wondered why Xu Yi did this.
He only knows that if he can be so cruel to himself, he can be more ruthless when he is sure of others.
Xu Yi grabbed the pen and paper on the table, and quickly reproduced the problem of the hat guest on the paper, "Can the calculus be solved?"
The oily middle-aged man snatched the gel pen from Xu Yi's hand, took out a new manuscript paper, and began to list the calculation formulas on the paper, muttering, "Calculus is not enough, it also involves a problem of curvature, limit and indefinite integral All the knowledge points will be used... "
After a while, in less than a minute, the oily middle-aged man finished his work and listed the final results.
Xu Yi took the paper and couldn't understand it at all.
He knew that this was due to the lack of foundation in his relevant knowledge points, so he started to talk about calculus in his oily middle age.
The oily head is very old, but he can't consume Xu Yi's big vegetable blades, and can only start from the beginning of calculus.
Unexpectedly, Xu Yi's comprehension ability was astonishing, often he would just start at the beginning and point out the key points, and Xu Yi would be able to repeat it along the way.
It only took half an hour for Xu Yi to master all the knowledge of calculus.
Again, mathematics is a technology and a kind of thought. Once you have a profound mathematical thought, it is not difficult to master specific techniques.
And Xu Yi did not go to the Internet cafe Baidu Calculus, but chose to rush to the university, because he anticipated the problems he might encounter during the study process, and needed someone to answer them in time.
After discussing calculus, the middle-aged man began to talk about curvature, limit, indefinite integral, Lagrange theorem...
The speed Xu Yi mastered made the oily middle-aged man stunned. He even wondered if all this was a prank. Otherwise, why did this person come to him to discuss such superficial mathematics knowledge when he obviously had such terrifying mathematical ability.
After Xu Yi had thoroughly grasped all the relevant knowledge points to solve the difficult problem of the hat, he casually wrote down a few difficult problems in the cultivation world that he couldn't think about.
The middle-aged man said, "What the hell is this talking about? I can't even understand the topic. It's too complicated. You have to go to the Academy of Mathematics."
The oily middle-aged man's answer verified Xu Yi's conjecture that the mathematical ability of this world may not surpass that of that world, but as far as mathematical tools are concerned, the mathematical tools of this world are really too sharp.
"Any other mathematical tools similar to calculus, let me know, hurry up!"
Xu Yi gestured with the kitchen knife in his hand, and the oily middle-aged man was trembling. He really didn't understand how the guy in front of him could perfectly combine the two images of thirst for knowledge and fierceness.
Suddenly, Xu Yi's eyes swept to the thick bookshelf on the left wall. He rushed forward and began to search. Soon, he locked on a tome about functions and began to study hard.
As he reads, he asks, often at the beginning, a lot of basic mathematical common sense needs to be rebuilt, and once the construction is completed, the speed at which he flips through the tome is like a money counter counting money.
In the blink of an eye, three hours passed, and Xu Yi finished more than ten tomes in a row. He also read the rest of the books, because they were not challenging and not worth studying.
Suddenly, Xu Yi thought of the library. There were so many tomes there, which condensed the crystallization of human wisdom in this world. Looking at the oily middle-aged man again, he suddenly felt that this person was not suitable for him. Tao Zhexuan will be fine, but unfortunately there is not enough time, so I plan to tie up an old professor first.
"Brother, who is the number one leader in the mathematics department in our school?"
Xu Yi stared at the oily middle-aged man and asked.
The oily-headed middle-aged man rolled his eyes, and he understood what this guy was up to. He was eager for Xu Yi to find someone else. As for what happened to others, he really couldn't control it. Just call the police for the old professor.
The oily middle-aged man was about to speak when the clouds in the sky outside suddenly tilted, and there were countless screams. Xu Yi yanked the door open, and the sun suddenly hit the ground from the sky head-on, and the exclamation burst out.
At this moment, a sharp handprint came, and Xu Yi had no room to dodge. Being hit by the big handprint, his consciousness suddenly fell into darkness.
"Wake up, wake up, finally wake up..."
"The morning is like blue silk, and the evening is snow. Thinking hard is so painful."
"The qi mechanism is weak, and if it is damaged, it may cost nearly a hundred lifespans."
"Mr. Xu, are you okay..."
"..."
All the chaotic noises could be heard, Xu Yi opened his eyes, and felt that his body was very heavy.
A few strands of silver hair fell down, and he reached out to grab the hair, and was first stunned by his protruding hand, which was full of grooves and goose skin.
He took out a mirror. In the mirror, he was as skinny as a stick, with ravines all over his face and white hair fluttering. He looked older than a centenarian among ordinary people.