question?

Qin Sheng looked up and, sure enough, saw the exercise on the blackboard where the question had just been written but had not yet been analyzed or explained.

This is a calculation problem that asks for the change in residual reactivity after a temperature change, given the temperature coefficient of a nuclear reactor.

This is a fairly standard exercise in nuclear science and technology, but for non-professionals, it's like reading gibberish.

Coincidentally, Qin Sheng is this non-professional.

—At least that's what everyone in the nuclear science and technology class thought.

People were already whispering among themselves.

"This girl isn't from our class, is she? What's she doing here?"

"Of course not. If there were such a pretty girl in our class, would I not remember her at all? She must be here with a friend."

"Didn't you see? She came in with Pei Ling, but she came in too openly, and Professor Zheng noticed her. Now she's being called on to do a test."

"Holy crap, isn't that the newly crowned school beauty, her name... what's her name again?"

One of the boys suddenly realized what was happening and couldn't help but swear. He scratched his forehead, unable to recall Qin Sheng's full name, and then the girl next to him punched him on the head.

"Qin Sheng!" The girl next to him glared at the boy, huffing and puffing, "You lied to me!"

Boy: ???

The girl got even angrier. She pinched him secretly under the table while whispering, "You promised to watch 'Mountains and Rivers Bright Moon' with me, but you said you couldn't come because of your club and would make it up to me in the dorm later. Did you make it up? Did you make it up?!"

Boy: "Did you...did you get it fixed?"

The girl rolled her eyes so hard they almost reached the sky. If they weren't still in the classroom, and if the old professor weren't still glaring at her from the podium, she would have loved to crack open this bastard's head and take a look.

Finally, he could only hold his breath and say coldly, "Qin Sheng, the younger sister of Actor Qin, is also the third female lead in 'Mountains and Rivers Bright Moon'."

"Answer again, did you make up the details?"

The boy instantly snapped to attention, straightening his posture ramrod straight, and said, "I'm sorry! I was wrong!"

Girl: Hehehe.

Sure enough, all men are big pigs!

Various murmurs arose in every corner of the classroom, so loud that even the old professor could no longer pretend not to see them.

He didn't know Qin Sheng, let alone what was going on with the students who had suddenly become agitated. He thought to himself that these were indeed the worst students he had ever taught.

While thinking, he picked up the pointer and slammed it on the podium a few times, shouting angrily, "Quiet down, all of you! Anyone chatting privately, come up to the podium and line up to do the problems!"

The students: "!!!"

That was a bit harsh; they immediately fell silent.

In that short time, Qin Sheng had already gone up to the podium, with Pei Ling following behind her with a blank expression.

Can we say that she's already quite used to it?

I don't know why, but it seems that from childhood to adulthood, wherever Qin Sheng is, there is never a quiet moment. There are always things happening, big or small.

She was either the one who caused the trouble, or she was just a small fish caught in the crossfire.

That's how outstanding they are.

Although she missed a class and didn't learn this part of the knowledge, as a typical student who studies hard and makes progress every day, Pei Ling had of course previewed and studied it beforehand. Therefore, she only needed to recall for a moment to remember the corresponding formula and wrote it down step by step according to the formula: ρ(ex1) = α(T) ΔT = ...

Following procedures step by step, in an orderly manner.

Moreover, her own writing is elegant and graceful, and her brushstrokes are neat and precise.

Although Professor Zheng was very dissatisfied with the student's tardiness, his impression of Pei Ling improved considerably just by looking at her attitude towards solving problems, and even his originally stern face softened a lot.

She nodded slightly and looked at Qin Sheng on the other side, then her expression paused.

When Professor Zheng turned his gaze, he saw Qin Sheng casually tossing chalk stubs into the chalk basket, and on the blackboard in front of her were two strings of characters, casual yet wild.

-5.2×10(-3)

4×10(-3)

(-3 is a superscript, 10 to the power of -3)

Professor Zheng's face darkened slightly, and he raised his pointer to block Qin Sheng, who had finished answering the question and was preparing to return to her seat.

Qin Sheng: "Any more questions?"

Professor Zheng, who was just about to ask her to write down the solution steps, was speechless.

I couldn't help but grit my teeth.

OK.

You like doing math problems, right?

Let her do it to her heart's content.

He raised his hand, grabbed the mouse, and clicked it a few times quickly. The image on the projection screen flashed and soon settled on one of the PPT slides.

—A PowerPoint presentation with a full page of questions.

Professor Zheng tapped the large screen with his pointer and said, "You can go down after you finish all these questions, otherwise you can stand there."

He pointed to an open space next to the podium and said.

It's quite obvious that they're in a difficult position.

The students looked at each other, and one hesitated before saying, "Should we remind the professor that she's not in our class?"

"Let's just forget about it. Can't you see the old professor is in a bad mood? He dislikes students with a poor attitude towards learning the most. Qin Sheng just ran into his trap and can only accept his bad luck."

"That's true. Oh well, everyone knows she's not in our class anyway, so it's not too embarrassing if she gets punished for not doing it."

"Well, students, before we talk about all this, don't you want to take a look at the answers Qin Sheng wrote?"

Seeing everyone discussing the punishment Qin Sheng was about to receive, someone couldn't help but offer a reminder.

The students immediately focused their attention on it, then compared it with their own answers from not long ago...

"Holy crap! She actually got it right?!"

That's not all...

While they were talking, Qin Sheng had already finished looking at the five exercises on the big screen and picked up a piece of chalk again to write the answers on the blackboard.

It was less than a minute, roughly the time when Pei Ling finished writing the answer and put down the chalk, and she put down her chalk as well.

The numbers and symbols, as casual and wild as before, were arranged in a whole column from top to bottom.

This time, not only the students, but even Professor Zheng was somewhat stunned.

After thinking for a moment, I picked up my lesson preparation notes, turned to the page with the explanations and answers to these five questions, and went through them one by one.

Unsurprisingly.

All correct.

After confirming it repeatedly, Professor Zheng finally accepted the reality.

Only now did he finally take a closer look at the girl he had initially thought had a very poor attitude towards studying.

Upon closer inspection, she was shocked again: "You're not a student in our class?"

Qin Sheng: "...Mm."

Pei Ling touched her nose and explained, "She's a psychology student who happened to be free, so she came to audit the class."

Oh... you're just sitting in on it...

etc!

Professor Zheng suddenly looked up: "What did you just say? What major did you say she was a student in?"