After taking the advice, I became a top student.

Chen Mo did not think there was anything wrong with his choice.

Many math problems are so difficult that you don't know how to solve them at first glance. Spending more time on them is pointless. Instead of wasting time, you should continue to work on improving your attributes. Once your attributes are high enough, there won't be any math problems that you can't solve at a glance.

"Holy crap, how come you're back so fast?"

Guo Chao subconsciously checked the time and found that only half an hour had passed since Chen Mo and the others started their test.

Shen Qingyi, who had been watching closely, sighed deeply, feeling a sense of emptiness. "Could it be that the questions were too difficult, and he gave up?"

The others in the class also shook their heads inwardly.

It wasn't a secret that Chen Mo went to participate in the math competition team's assessment, since so many people in the math competition team knew about it and they were scattered across various classes.

Many people already knew about Chen Mo's participation in the training camp on the very first day.

They had initially considered this a legend, but they never imagined that this legend would come to an end so soon.

"It's okay, there are still two years left. With your abilities, you can catch up in the other subjects too."

Shen Qingyi gently comforted her, "A butterfly cannot fly across the ocean, so who would have the heart to blame it?"

"?"

Chen Mo glanced at Shen Qingyi with a puzzled look, then continued to bury himself in his book. He used to study in the competition class, where it was quieter, but today everyone was taking an exam, so he had to return to Class 18 to study.

This time he was studying physics.

He's going to be live-streaming his physics lesson tonight, and I can foresee netizens coming up with some tricky questions, so he needs to study even harder.

Seeing that Chen Mo was studying physics, Shen Qingyi nodded in agreement. When she realized that the Olympiad was not a viable option, she immediately chose to study other subjects, which was also a rare and commendable decision.

At eight o'clock, Zhou Hao returned to the classroom and looked at Chen Mo with a hint of anticipation, as he had done quite well on today's questions.

Although Chen Mo's early submission of the exam put a lot of pressure on everyone, after doing the questions, they realized that it was impossible to finish the exam in half an hour, and that guy probably submitted a blank paper.

This guy got a perfect score in math, but he still can't beat me in the competition. I'm still better than him!

After the setback of the midterm exams, Zhou Hao regained his confidence and felt that a top student like Shen Qingyi should be protected by a top student like himself.

Eight ten,

Bai Zhi reappeared at the classroom door.

Zhou Hao subconsciously stood up.

However, Bai Zhi looked at Chen Mo.

"?"

Zhou Hao, who had just gotten up, froze on the spot, his face turning bright red instantly. He was so embarrassed that he wished he could disappear into a crack in the ground.

He didn't actually have any impure thoughts about Bai Zhi. After all, Bai Zhi was a year ahead of them and had always been the senior student in the competition class, making her someone they dared not disrespect.

The other students in Class 18 were also very surprised. Bai Zhi used to come to see Zhou Hao, so why was it Chen Mo who came instead today?

"Everyone, hurry back to the competition class classroom, Teacher Zhou is about to go over some problems."

Bai Zhi stood at the door and spoke softly, her voice as clear and melodious as a nightingale's song, echoing in the quiet classroom.

"OK."

Chen Mo nodded, tidied up his materials, slung his backpack over his shoulder, and walked out of the classroom with Bai Zhi toward classroom 601.

She didn't inform Zhou Hao. Although she told Chen Mo, Zhou Hao had already heard it, so there was no need to repeat herself.

Class 18 only erupted in excitement after the two left the classroom.

They all knew what Bai Zhi's attitude meant. Chen Mo must have passed the assessment and successfully entered the math competition team. He might even have secured a spot in the National High School Games.

However, they clearly saw Chen Mo return in just over half an hour.

Zhou Hao didn't return to the classroom for another hour. Could it be that Chen Mo did better than Zhou Hao on the test?

Chen Mo's ability to defeat a group of top players from the math competition team and secure a spot in the competition suggests that he is much stronger than they imagined!

Guo Chao stared blankly at the classroom door. After a long while, he turned back to look at Li Ze in a daze. The two looked at each other and saw the shock in each other's eyes.

"So, does being good at studying really mean you can do whatever you want?"

First it was Shen Qingyi, and now even Bai Zhi has fallen for her.

"I regret it!"

Guo Chao felt a deep sense of regret building up in his heart. Back then, my entrance scores and Chen Mo's scores were similar, which meant that my talent and intelligence were no less than Chen Mo's. If I had studied hard, wouldn't I be the same person as Chen Mo now?

Only Shen Qingyi lowered her head sadly, looking at the exercise book on her desk. She was happy that Chen Mo had successfully entered the math competition team, but also felt a little flustered because of Bai Zhi's appearance.

Why didn't you do the last big question?

On the way to classroom 601, Bai Zhi asked curiously. As Zhou Zhi's capable assistant, she had already seen Chen Mo's test paper.

Chen Mo's score was lower than hers, but that was because Chen Mo didn't do the last question. Considering Chen Mo's action of handing in the paper after half an hour, she had to take this junior high school student seriously.

"I can't do it."

Chen Mo is very honest.

"But you handed in your paper in just half an hour. You still have fifty minutes left, why didn't you give it a try?"

Bai Zhi didn't understand.

Chen Mo shook his head. "I might be able to try to prove that problem using algebraic transformations, inequality scaling, and enumeration and induction, but I probably won't be able to solve it in the end because I can't handle the infinity of integer solutions and the internal structure. The algebraic expression a^2+b^2/ab+1 can't be handled directly."

"?"

A question mark appeared above Bai Zhi's head as well, "You actually tried to solve this problem using high school math?"

"There is simply no powerful tool in the high school curriculum to reveal the profound connection and constraint between two positive integers a and b when they satisfy the divisibility condition."

"This problem requires the use of Vieda jumps."

However, she quickly realized that Chen Mo had only participated in a few days of intensive training and had only grasped the basics of math competition knowledge, let alone learning university-level math content.

"So how did you originally plan to prove it? Could you explain your thought process to me?"

Bai Zhi asked with some curiosity.

Chen Mo accepted all comers; after all, he could learn something from explaining problems to others, so he was happy to do such activities.

"First, we prove the hypothesis by contradiction and select the minimum solution. Assume that k is not a perfect square. Consider all pairs of positive integers (a, b) that satisfy the condition and whose corresponding k is not a perfect square. Select a solution that minimizes a+b. Without loss of generality, assume that a≥b>0."

As they spoke, the two had already entered the classroom. Chen Mo simply found a place to sit down, took out a pen, and started scribbling on a draft paper. "Then construct a quadratic equation and introduce another root, rewriting the condition as a^2 + b^2 = k(ab + 1)..."

"Then prove that a′ is a positive integer..."

Time passed slowly, and all the math competition team members had arrived. They saw Chen Mo sitting in his seat writing and drawing, explaining something, while Bai Zhi, the senior sister of the math competition team, was standing to the side, bowing and listening attentively.

They wondered if they were seeing things; was someone actually explaining a problem to Bai Zhi?

They used to be the ones who asked Bai Zhi to explain their problems!