A genius? I just love studying.

Chapter 47 An unexpected gain

[Win first prize in the provincial competition, gain +1 free attribute point]

On the bus back to school, Chen Hui looked at the barrage of comments in front of him, his heart pounding.

It turns out that you can actually get free attribute points by participating in competitions!

What a pleasant surprise!

It goes without saying that free attribute points are very powerful. His rise to where he is today is all thanks to that free attribute point he got more than a month ago.

"Now it seems that I should adjust my strategy!"

Chen Hui was thinking that he had to raise the priority of mathematics competitions. He would definitely have to participate in the CMO and IMO later on. He could even try out other competitions if there were any.

But now,

Chen Hui called out the panel,

[Host: Chen Hui
Insight Level 3: (2.1/4)

Judgment Level 0: (0.8/1)

Creativity Level 0: (0.5/1)

Memory Level 1: (1.6/2)

Needless to say, the insight has reached a very high level and played a huge role in this competition.

However, it is hard to say how useful it would be if he continued to improve his insight. With his current level, he probably cannot use such powerful insight. It is better to use it where it counts.

creativity!

Chen Hui thought that at his current stage of study, he didn't seem to need much creativity, so he would focus on Paas first.

Judgment is important, but Chen Hui is not sure how much impact it will have on math competitions.

On the contrary, Chen Hui felt that it was necessary to improve his memory.

If he hadn't happened to know Euler this time, he would probably have been stuck on the third number theory question.

So next he needs to learn more mathematical knowledge, not just algebra, geometry, and probability theory, but he also needs to have a deeper understanding of number theory and combinatorics.

Being well-informed and having a strong memory are also of great help in learning mathematics.

Moreover, improving memory is not only helpful for mathematics, but also has a huge impact on other subjects, which can be said to kill two birds with one stone.

Thinking of this, Chen Hui no longer hesitated.

Memory, give me some more!

[Host: Chen Hui
Insight Level 3: (3.1/4)

Judgment Level 0: (0.8/1)

Creativity Level 0: (0.5/1)

Memory Level 2: (2.6/3)

There was no special feeling, but Chen Hui suddenly felt that there were a lot more things in his mind. Some memories that he had originally forgotten suddenly flooded into his mind. Even the scene of flying on his father's neck when he was two or three years old appeared clearly in front of him.

His heart skipped a beat for no apparent reason, as if a scar that had healed for a long time was suddenly torn open. The bloody pain invaded his whole body, causing Chen Hui to spasm uncontrollably.

"Are you OK?"

Liang Peixuan, who was sitting next to him, asked with some concern.

Although Chen Hui had taken motion sickness medicine in advance, no one knew how effective it was.

"It's okay."

Chen Hui waved his hands and broke free from the memories.

Sometimes having a good memory isn't necessarily a good thing.

Actively throwing those images into a secret corner of his brain and sealing them away, Chen Hui took out his textbook and continued studying.

The motion sickness medicine was indeed quite effective and he no longer felt motion sick. Time could not be wasted!
At 6:27, the bus stopped at the gate of No. 2 Middle School. It was not long after school and many day students were still walking slowly out of the school.

The arrival of the bus attracted a lot of attention.

Chen Hui and his group got off the bus and walked towards the school, attracting the attention of their classmates, whose eyes were full of longing.

Under the current education system, those who can go to high school more or less have the desire to become a top student.

"came back!"

Zhao Dayong walked out of the security booth and looked at Chen Hui who was walking towards the school gate with a smile.

"Yeah!" Chen Hui also smiled and nodded in greeting.

"How did you do on the exam?"

Zhao Dayong seemed to be asking questions to his own nephew.

"good!"

Chen Hui also returned as a junior.

"It's okay!"

Zhao Dayong laughed and said, "I know you will have a great future!"

"I've been able to judge people accurately since I was a child!"

Zhao Dayong didn’t know to what extent “okay” meant, but based on his more than 50 years of life experience, if someone tells you it’s okay, then the result should be quite okay!
But the students following Chen Hui did not have this kind of life experience.

"good?"

Tan Junjie speaks so loudly that he doesn't know whether he should spit or not.

What should Chen Hui do if his grades are just okay?

The other students who did not get a ranking were even more at a loss as to whether to laugh or cry. They felt a little heartbroken, lowered their heads, and leaned sideways, fearing that the security guard would also ask them how they did in the exam.

However, Zhao Dayong had no intention of talking to them at all.

When I walked into the classroom, many boarding students had already finished their meals and returned to the classroom, and were playing around.

The entrance of Chen Hui and Liang Peixuan attracted a lot of attention. Chen Hui's sudden rise in recent days had surprised them for a while, but they quickly adapted, and Chen Hui's situation didn't have that much of an impact on them.

Until today, when they saw Chen Hui, they suddenly remembered that Chen Hui had actually represented No. 2 Middle School to participate in the mathematics competition.

That inexplicable feeling came over me again.

Chen Hui looked at the guy sitting next to him in surprise.

It's already this late, but Li Hai hasn't returned home yet.

"You guys are finally back. I've been waiting for you for so long that the flowers are almost withered."

When Li Hai saw Chen Hui, his lifeless eyes suddenly lit up. He stood up and said resentfully.

"Are you waiting for us?"

Liang Peixuan asked suspiciously, always feeling that there was some conspiracy.

"if not?"

Li Hai saw Liang Peixuan's expression and didn't bother to pay attention to him. Instead, he looked at Chen Hui eagerly, took out a piece of paper and put it in front of Chen Hui, "Can you do this problem?"

There was a question written on the note.

【如图，在平行六面体ABCD-A1B1C1D1中，AA1=AB，AB1⊥B1C1。

Proof: (1) AB∥plane A1B1C;

(2) Plane ABB1A1⊥plane A1BC.

This was a solid geometry problem. Chen Hui felt as if he was in a dream. When he first obtained free attribute points, he was racking his brains over a solid geometry problem.

This question is quite difficult.

Of course, for him now, he knew what to do at a glance.

However, after winning the first prize in the provincial competition, Chen Hui gradually realized that he is no longer the last-place student he used to be. He seems to have some strength in mathematics now!

So this question should be difficult for Li Hai.

Liang Peixuan, who was standing by, seemed to have seen something strange and said sarcastically, "Oh, are you turning over a new leaf and ready to study seriously?"

"It's none of your business, go away."

Li Hai waved his hand and handed over a gel pen. He continued to say to Chen Hui, "Come on, write down the solution process."

"?"

Chen Hui was no longer the slow-witted Chen Hui. He felt something was wrong at the first moment.

But he still sat down, picked up the pen, and started writing on the paper.

解：（1）∵AB∥A1B1而A1B1∈面A1B1C，且AB面A1B1C
∴AB∥face A1B1C.

He had already seen that Li Hai probably didn't want to cause trouble for him.

So he did not choose the simple space vector method, but directly used pure geometry knowledge to solve the problem.

"No way, you really want to do the questions here?"

Liang Peixuan was a little dumbfounded. "This second question is not that simple. Teacher An and the others are still waiting for us to eat."

They came back to put their school bags and other things away, and said they would meet at the school gate in ten minutes.

No. 2 Middle School is not big, but it takes almost ten minutes to go there and back, so there is not much extra time left for them.

If it was just a delay of one or two minutes, it would be fine, but doing a big solid geometry problem was a bit excessive no matter how you looked at it.

It's already past six o'clock, and the students didn't have a proper lunch and are already hungry.

Chen Hui smiled slightly and had already written out the answer to the second question.

（2）∵AA1=AB，且平行四边形ABB1A1，∴四边形ABB1A1为菱形，∴AB1⊥BA1，

∵AB1⊥B1C1，B1C1∥BC，∴AB1⊥BC，∴AB1⊥面A1BC。

∵AB1∈面ABB1A1，∴面ABB1A1⊥面A1BC。

"All right."

Chen Hui put down his pen and looked at Li Hai.

The whole process took less than a minute and the certificate was completed.

This question is indeed a bit difficult, but it is almost easy. It just uses some simple geometry knowledge to know that the diagonals of a rhombus are perpendicular, and the two intersecting lines perpendicular to the surface are also perpendicular to the surface.

If this question uses space vectors, it will take at least ten minutes to solve.

"Sign again, sign again."

Li Hai chuckled, his intention was obvious.

"?"

Liang Peixuan looked at the answer process on the paper, slightly stunned.

Li Hai didn't understand the difficulty of this question, but he did.

He was sure he could solve this problem, but it would take him at least ten minutes to sort out all the conditions and derive the final proof.

But Chen Hui only took two or three minutes. If writing did not take a certain amount of time, Liang Peixuan reasonably suspected that Chen Hui had deduced the proof process in his mind the moment he saw the question.

But when you think about it, it doesn't seem that outrageous. After all, the person sitting in front of him is a monster who just won the first prize in the provincial competition.

It’s just that Chen Hui’s transformation from a poor student to a top student was so rapid that he still has trouble reacting from time to time.

"Haha, I'm going to go back and frame this paper!"

Li Hai laughed a "healthy" laugh, his face full of joy, waking Liang Peixuan from his trance. "What news did you get?"

Ordinary high school students usually don't pay much attention to competition results, and naturally they won't go to the official website of the Chengdu Mathematical Society to check their scores. Now, the students in No. 2 Middle School who knew the news have just returned to school, but Li Hai looks like he has been waiting for a long time.

"Snakes have their own paths, rats have their own holes, and mountain people have their own clever plans. Don't meddle with them."

Li Hai smiled triumphantly, then clipped the draft paper with Chen Hui's answers into his English book, put it in his schoolbag, zipped it up, put the schoolbag on his back, and waved to Chen Hui and the others, "I'm going back to eat. See you tomorrow!"

(End of this chapter)