Professor, your turtle!

The stationary Schrödinger equation in spherical coordinates is very long, and Ji Fan moved two steps to the right to finish writing it completely, and then began to deduce the wave function non-stop.

His hands are fast and steady, and he seems to have practiced countless times.

Speaking of it, the physics teacher once briefly introduced the wave function conclusion equation, but as for the specific derivation process, he never explained it to the students.

On the one hand, he thought it was unnecessary, on the other hand, he hadn't studied quantum theory for many years, and he couldn't even remember many details clearly.

But right now, the formulas are written line by line on the blackboard smoothly, with concise steps, clear logic, and easy to understand.

Even, next to some complicated unknowns, text annotations were made.It can be seen that the derivation process is not simply memorized. The respondent is obviously familiar with this knowledge, and it is easy to use when using it.

The students stared blankly for a while, then suddenly woke up like a dream, each of them took out their notes and began to bury their heads in copying the writing on the blackboard.The physics teacher's legs softened, and he sat down in Ji Fan's seat, wiping the sweat from his brow, looking a bit dazed.

It was true that the person standing on the podium was Ji Fan, but upon closer inspection, he didn't look like it at all.He doesn't even need teaching aids, his posture is proficient, and the coordinate diagrams he draws freehand are straight and regular.

——For a while, it was hard to tell who was the teacher and who was the student.

The classroom was very quiet, only the rustling of pen and paper.

After a while, Ji Fan finished writing the last stroke, threw away the chalk, and walked down calmly, revealing the blackboard full of writing behind him.

The physics teacher walked to the podium, took a closer look, opened his mouth, but couldn't say anything.

When he finally organized his words, he cleared his throat, and when he turned around, he saw that Ji Fan had finished packing his textbooks and was carrying his schoolbag on his shoulders.

teacher:"……"

After a pause, he said awkwardly, "That...it seems like you haven't finished class yet?"

"Ji Fan" glanced at him, and said lightly, "I don't think there is any need for me to stay any longer."

The physics teacher's face turned blue - this was exactly what he had criticized Ji Fan just now, who would have given back the exact words so quickly.Ironically, the meaning of the whole sentence is lost.

He wanted to say something, but Ji Fan didn't wait for his answer at all, put his schoolbag on his back, opened the back door and walked out.

On campus, students who do not participate in after-school tutoring are taking a lunch break and walking on the playground in twos and threes.

In a remote corner of the laboratory building, Ji Fan shuddered, recovered his senses, and immediately blushed.

"Fu, Mr. Fu," he stammered, "You you just now..."

Fu Mingyuan retired with a little pride, and let out a "hmm" from his nostrils with a little pride.

"It's over." Ji Fan recalled what happened just now, and squatted down with his head in his arms, "It's over, it's over."

Fu Mingyuan: "?" What's going on, shouldn't you praise me?

Ji Fan looked desperate: "He holds a grudge so much, I'm going to die."

"...Anyway, I won't go to the physics competition class again." Fu Mingyuan muttered, his voice sounded a little guilty.

Ji Fan raised his face, revealing a pair of dead fish eyes that lost their highlights: "No, my ordinary physics class...is also taught by him."

Fu Mingyuan: "..." Oh, Huo.

"Forget it, forget it," Ji Fan covered his face and sighed, "I'm used to it anyway..."

It is absolutely impossible for Fu Mingyuan to admit that he did something wrong.He paused for a moment, and said unnaturally: "It's a big deal and don't take the physics class later. I will teach you if there is something you don't understand?"

Ji Fan: "..." It is obvious that you are reluctant to teach calculus.

Fu Mingyuan said dissatisfied: "What kind of expression is this, am I not better than him?"

Ji Fan trembled: "Strong, strong..."

but!It's because it's too strong that I worry about it!

You must know that many learning gods are actually not good at teaching. They have their own way of understanding memory, and many times they are not suitable for teaching scum at all.

Ji Fan sighed, looking preoccupied.

After a while, Fu Mingyuan said: "What are you still doing?"

"No," Ji Fan's face was a little red, and he whispered, "Can you turn around, I, I want to go to the toilet..."

Fu Mingyuan: "..."

In front of the two of them was the dilapidated bathroom with a copper sign. If Fu Mingyuan didn't have a "face" for the time being, he would have blushed by now.

"Go if you want," he said unforgivingly, "Why should I peek at you?" Even so, I thought in my heart, when you were a turtle, what did I look like before?

Ji Fan breathed a sigh of relief, opened the door and walked in.

"Wait," Fu Mingyuan repeatedly confirmed the sign on the top of his head, doubting his own eyes, "how did you get into the female—"

However, before he finished protesting, he was forcibly dragged in by the system's "one-meter rule".

Fu Mingyuan's first reaction was to cover his eyes, but now that he has no hands, he can only be forced to float behind Ji Fan to see clearly what's going on inside.

Huh?How is the men's restroom furnished?

Ji Fan explained slowly: "Well, I just forgot to mention that the decoration on this floor uses horizontal card slots, the movable ones."

"so……?"

"So there are often mischievous boys climbing up and secretly changing the two toilet signs."

Fu Mingyuan: "..." He's still a high school student, so immature!

"Since you found out, why don't you change it back?"

Ji Fan's face blushed subtly, and he murmured: "Too, too high..."

Fu Mingyuan: "..."

After a moment of silence, Fu Mingyuan spoke suddenly, insisting that Ji Fan go into the cubicle.

"Why?" Ji Fan put his hands on the zipper, with a puzzled expression on his face.

"If a girl broke in without knowing the situation, wouldn't you scare them?" Fu Mingyuan spoke eloquently.

——And it might even be seen by others! (That's your point!)

"But..." Ji Fan became entangled, this building is so remote, let alone girls, there is not even a ghost.

"No but," Fu Mingyuan threatened lightly, "If you don't go in, I won't turn around."

Ji Fan: "..."

He stayed in place for two seconds, then swished into the compartment, closing the door and locking it in one go.

After Fu Mingyuan made such a fuss, it was absolutely impossible to return to the competition group for class, so Ji Fan had no choice but to return to the classroom.

During the lunch break, the senior three classrooms were always quiet, but today, for some reason, there was some noise.

A group of people gathered around the front table and the podium, as if watching something.

Through the gap between the crowd, Ji Fan looked around, and it seemed that a certain game video was playing on the computer screen.

"What is this?" There was a boy on the outside supporting the shoulder of the person in front of him to look in, but he couldn't see it after jumping around a few times.

"International Speed ​​Calculation Competition." Someone inside replied.

Ji Fan resolved his confusion, and stopped being curious, turned around and sat back in his seat.

Speaking of quick calculations... Ji Fan turned his head, stared for a moment, and suddenly remembered that Xu Haifan seemed to be very good at this when he was a child.When Xu Haifan's mother noticed, he was already able to count faster than some children who were born in abacus and mental arithmetic.

While staring at Xu Haifan's vacant seat, the classmates who surrounded him in front of him dispersed.

"What? Is it over?"

"The Chinese team won again!" A girl replied with a smile, "It's been three years in a row, it's great!"

After winning the game, everyone continued to enjoy themselves, chatting and discussing together, and later, they even began to write questions for mutual examinations.

In the end, only one boy and one girl were left, and the students in the class were also divided into two factions, cheering for them respectively.As a result, the boys unfortunately lost by a few seconds.

Probably because losing to the girl made him feel very ashamed, the boy's face slowly turned red - even now, there are still many people wearing colored glasses, thinking that girls are inherently inferior to boys in science and arithmetic, even though the facts are not So, it's just gender stereotyping.

The boy muttered unconvinced: "If Xu Haifan was here, I definitely wouldn't be able to make you so frightened."

The girl rolled his eyes at him, and retorted eloquently: "What's wrong with me? Win you, take it easy, okay?"

"You—" The boy was extremely angry, but if you lose, you lose. It is an indisputable fact that your skills are inferior to others.

The surrounding students began to whisper such as "XX is nothing more than that".

The boy clenched his fists and thought to himself, how can we do it again in a legitimate way?

Yes, as long as you give him another chance, he won't necessarily lose!

His eyes swept across Xu Haifan's vacant seat, and he suddenly caught a glimpse of Ji Fan sitting next to him, his eyes rolled, and he had an idea.

"Ji Fan," he rubbed his hands and laughed, "I remember Hai Fan said that you learned abacus mental arithmetic when you were young?"

Ji Fan was stunned for a moment, then shook his head and said, "It's been a long time since I haven't used it, I've already forgotten it."

"You must be modest! I think you never make mistakes in your calculations," the boy approached, "Hey, you've been staring at our side just now, but you didn't come to play..."

Ji Fan frowned slightly: "Haven't you already decided the winner?"

"Let's compete again!" The boy interrupted him bluntly, showing his fox tail.

"?" Ji Fan bypassed his cover, glanced at the girl who won the championship not far away, and said inexplicably, "I can't compare to her, can I just admit defeat?"

"It's not her," the boy said cheekily, "It's a competition between the two of us, and whoever wins will challenge her again."

"Hey!" The girl just couldn't stand it anymore, "Why are you acting like a fool when you lose! Seeing that Ji Fan has a good temper, you catch him and bully him?"

"Go, go, go." The boy made a gesture of repelling, "This is an internal matter for us boys, right Ji Fan?"

Ji Fan pursed his lips: "But I don't want to..."

"Come on, just for fun—"

"Why, didn't you hear him say he was not happy?" Another boy suddenly interrupted.

Both of them were taken aback, Ji Fan asked in surprise, "Wang Gang?"

Wang Gang stiffened his neck, didn't look at Ji Fan, turned around and patted his chest: "Don't you want to compete? Come on, I'll compete with you."

The boy's voice weakened: "What I asked was obviously..."

——I wanted to pick a soft persimmon to pinch, but I pinched a hard one.The boy bit the bullet and didn't back down, but he began to regret in his heart: what happened today?Everyone is helping Ji Fan to speak, it's really crazy.

On the other hand, Ji Fan had no less doubts than him.

Wang Gang has been too perverted lately. The last time he apologized inexplicably, it’s fine. This time, it’s obviously none of his business, but he jumped out on his own initiative... Just thinking about it, he couldn’t help but look at Wang Gang a few more times before realizing that This guy turned his back to him, and even the roots of his ears were red.

What, is it hot in the room?

At this moment, Fu Mingyuan's voice came over, and it sounded a little unfathomable.

"Little turtle, huh?"

The tone was moody, but it made Ji Fan shudder.He shrank his neck, feeling a little guilty for some reason: "Eh... eh?"

Fu Mingyuan's tone was contemptuous and disdainful, with an inexplicable hint of jealousy in his disdain, and asked, "Why is this kid so active?"