356: So this is what you're like, junior brother?!

Next, the two studied separately. Qu Qinghuan was sulking and didn't pay much attention to Lin You.

However, the two of them sat on the same side of the table, their bodies very close, occasionally brushing against each other while studying. But... Qu Qinghuan didn't deliberately move farther away from Lin You either.

As noon approached, Lin You suddenly felt a tap on his shoulder.

"Junior Brother, you really are here studying with Xiao Yu'er."

Lin You looked back and saw the smiling Tang Zhenyi. Qu Qinghuan also turned her head when she heard the noise.

Tang Zhenyi saw the unfamiliar girl, and the smile on her face gradually froze. She looked down at her Junior Brother and the strange girl sitting so close... So this is what kind of Junior Brother you are?!

Two minutes later, in the corner of the corridor outside the study room, Tang Zhenyi raised her chin, pointing at Qu Qinghuan, and said with a slight twitch of her lips: "Junior Brother, are you saying that this young lady... is your Teacher?"

Lin You nodded vigorously, his gaze clear and firm. "Absolutely true, the genuine article!"

"Junior Brother, come on. This young lady looks younger than my sister... Don't worry, I won't tell Xiao Yu'er. You're a man, it's not like you can't have female friends. Senior Sister and I have a great relationship too, right?"

Lin You studying closely with an unfamiliar girl in the Library certainly made him look a bit like a scumbag.

However, even though Tang Zhenyi liked Du Zhaoyu very much, Lin You was her actual Junior Brother. She covered one eye and waved her hand, looking ready to turn a blind eye.

Qu Qinghuan stood nearby, listening to the conversation between the Senior Sister and Junior Brother, watching their actions, her expression somewhat subtle... As Lin You's high school teacher, Qu Qinghuan had seen many of Lin You and Du Zhaoyu's interactions during grade 12. Qu Qinghuan had even discussed privately with Sister Yin that Lin You and Du Zhaoyu would definitely start dating once they got to university.

And the facts were just as they had discussed: after Lin You and Du Zhaoyu achieved the provincial first and second rankings respectively in the College Entrance Examination, they both gave up on Qingbei and came to Nandu University.

But... after Qu Qinghuan came to Nandu University to prepare for the graduate entrance examination, she never asked Lin You about Du Zhaoyu.

And Lin You... had never mentioned Du Zhaoyu in front of her.

Being "caught in the act" by Lin You's Senior Sister and hearing the name "Xiao Yu'er" from her mouth made Qu Qinghuan feel a little disheartened.

Although she had often thought, "How great would it be if Lin You were my boyfriend," reality was ultimately cruel... Du Zhaoyu was so dazzling that even a beautiful, sweet-looking Teacher couldn't help but feel inferior, compounded by the chasm of age and status... The pink bubbles generated during the time spent with Lin You instantly burst.

Qu Qinghuan took a deep breath and said expressionlessly: "Lin You didn't lie. I really was his former high school Physics Teacher."

Tang Zhenyi smiled at Qu Qinghuan. She had no interest in interfering with her Junior Brother's private life. No matter what, as long as they were her Junior Brother's friends, she would treat them kindly.

She wasn't his biological mother. Even a biological mother probably wouldn't manage her son's dating life, right?

"Little sister, it's fine. It doesn't matter if you're not Junior Brother's Teacher."

It wasn't until Qu Qinghuan pulled out her phone, found her electronic ID card, and handed it to Tang Zhenyi.

"Ah, born a year before me... 25 years old?! Are you really Lin You's Teacher?"

Lin You said speechlessly, "Senior Sister, you don't seem to trust me much."

Tang Zhenyi scratched her head with an embarrassed smile. "Lin You, your Teacher is so young. If anyone else saw her for the first time, they wouldn't believe it either..."

After resigning from Ancheng No. 7 Middle School, Qu Qinghuan certainly didn't deliberately try to look older. Especially during her recent interactions with Lin You, her mindset had become much younger, making her look like a cute girl who had recently graduated from high school and might be a university student.

"Teacher Qu, I'm sorry, I was rude just now!"

Like Lin You, Tang Zhenyi was someone who admitted her mistakes quickly and 'kneeled' at the speed of light.

Qu Qinghuan smiled. "I resigned after Lin You finished the College Entrance Examination, so it's not wrong to say I'm not a Teacher now."

Lin You supplemented by explaining why Qu Qinghuan was there. Tang Zhenyi immediately patted her chest. "So you're preparing for next year's re-examination, Teacher Qu. I know many teachers and professors in the School of Physics. Have you decided which professor you want to choose? If I know them, I can introduce you in advance!"

Qu Qinghuan was stunned. Was she about to become... someone with connections?

Qu Qinghuan was not pedantic. She understood clearly that having connections wasn't scary; what was scary was when connected individuals lacked corresponding ability and effort, taking a position only to occupy it without contributing.

Qu Qinghuan didn't nod in agreement but looked at Lin You beside her.

Lin You scratched his head. "What Senior Sister said was also part of my plan. I was originally going to ask Senior Sister about it sometime, but I didn't expect to run into her today."

After discussing Qu Qinghuan's situation and adding each other's contact information, Tang Zhenyi finally remembered the purpose of her special trip to the Library to find Lin You.

"Junior Brother, recently I've been reading journals about the Navier-Stokes Equations and have accumulated quite a few questions and ideas that I wanted to discuss with you."

Lin You tilted his head. "Senior Sister, the Library isn't the right place to discuss problems. Why don't you send me a message? I can just go to your laboratory, right?"

Tang Zhenyi grinned, showing her teeth. "Oh, Junior Brother, although that's true, I'm planning to cling to your thigh to research the Navier-Stokes Equations with you, so of course I should be the one to proactively seek you out~"

"Why be so formal? Senior Sister, if that's the case, then I won't look for you if I have trouble in the future. I'll go straight to our Teacher."

"Don't! Next time! Next time, I promise I'll come when called and leave when dismissed!"

"Now that's more like it. Remember, you are my Senior Sister!"

Qu Qinghuan watched the two chatting from the side. It was obvious they had a good relationship, but the content of their conversation shocked her somewhat.

The Navier-Stokes Equations? Is that the millennium prize problem related to Fluid Mechanics that I know about?

When did Nandu University's Department of Mathematics become so strong?!

As Qu Qinghuan's dream university, she naturally knew Nandu University well. The School of Physics at Nandu University was very strong, but the School of Mathematics' national ranking was lower than Nandu University's overall university ranking in the country.

A moment later, Qu Qinghuan watched Lin You and Tang Zhenyi leave, feeling a sense of loss... After arriving at the School of Mathematics Building and entering Tang Zhenyi's "single-person laboratory," Tang Zhenyi pulled out a thick stack of printed A4 paper from a drawer. All the content was journal papers about the Navier-Stokes Equations.

Besides the printed content, the papers were covered in Tang Zhenyi's notes, densely filled with corresponding study notes and ideas.

Only about a week had passed since Lin You and Tang Zhenyi mentioned partnering to research the existence and smoothness problem of the Navier-Stokes Equations, but Tang Zhenyi had already overworked herself doing a significant amount of work.