Xueba, I beg you to go and escort him quickly!

Maybe in other people's eyes, He Junfei is too pretentious, too much, just a thorn in the side.

But in the eyes of these people, they are very happy!

For example, there are thorns in every class, and it is these thorns that are often remembered by the teachers for the longest time.

Looking at He Junfei again, he has this capital "arrogant".

After all, the answer I wrote last time was indeed much better than that of the last classmate!

This is obvious to all present!

After 10 minutes, the students in the three provinces all looked at the questions again.

This confuses the teachers in the other two provinces.

"Isn't this a topic prepared by their province? Why are they still working hard to prove it?"

"Even their leading teacher looked at a loss, what's going on?"

"Could it be, a temporary idea, a temporary question?"

Swish!

The leading teachers of these two provinces stared at He Junfei.

But when they looked at He Junfei, he was also writing and drawing.

The only person who raised his head and stared at everything was Xu Heng.

"This……?"

"what happened?"

Involuntarily, they also looked at the blackboard.

This question looks very simple and seems familiar, but when they really set out to prove it, all the students realized the complexity and cumbersomeness.

"I can't do anything! Hiss..."

"Damn! Not at all!"

"Will Feng and Chuan meet?"

Many students turned their attention to the well-mannered student wearing glasses.

His name is Feng Hechuan, No.3 in the final of this Olympiad competition!

Even in the province, the mathematics score is the first!

From childhood to adulthood, he has won numerous awards.

Has been recommended to Peking University Department of Mathematics!

At this time, he is seriously proving.

He has some eyebrows!

But 10 minutes is not enough!

Even the teacher came forward to remind, "10 minutes is just their aggressive method, Feng Hechuan, don't worry, prove it slowly, and go up when you are sure!"

"In addition, I also read it. After that student finished the question, he immediately started writing and drawing!"

"It's very likely that they also just have questions and don't know the answers."

Looking in He Junfei's direction again, he saw that He Junfei handed the scratch paper on which he wrote and drew to Xu Heng.

These teachers, "???"

What the hell?

Why did that classmate He hand over his things to him?

And from this scene, they also saw the students asking them these teachers' questions!

very weird...

as time flows.

He Junfei stood up again, "Ten minutes are up!"

PS：【尾号4534】【尾号6731】【尾号2089】【月光之诚】【是七七呀】【尾号4862】【黄～泽坤】【諾言丶〃】【尾号5073】【尾号5151】的支持！

Kneel thank you! ! !

Ask for all support!The little author was shivering from the cold, and was still writing like crazy!so cold!There will be updates later!

(╥﹏╥).

Chapter 153

10 minutes!

It's fleeting!

All the students suddenly raised their heads and stared at Xu Heng in unison.

Don't say that the students in the other two provinces were surprised, even the students in this province were surprised.

"Didn't He Junfei even pass the rematch? What's wrong with you today? Are you so fierce?"

There is a saying, what kind of questions can be solved, what kind of questions can be done, and what kind of questions will be asked!

Otherwise, it will be even more embarrassing to talk about topics that you don't know how to choose.

In the eyes of the leading teachers of the other two provinces, He Junfei is very likely to be like this!

"He's bluffing!"

"Feng Hechuan, you continue to prove yourself!"

Before the words were finished, Feng Hechuan got up, holding his acting paper in his hand, and ran to He Junfei.

He just glanced at He Junfei!

Didn't say a word!

Just pick up the chalk and write on the board:

Proof: Subtracting the two formulas corresponding to n and n+1 gives, for all n≥N,

（an/（a（n+1））+（a（an+1）/a1）-（an/a1）∈Z……（1）

于是有a（n+1）a1丨ana1+（a（n+1）-an）a（n+1），n≥N……（2）

Let the set of prime factors of a1 be P, and an/an be the largest factor of an that is mutually prime with a1, that is...

……

Feng Hechuan had a clear mind, and he answered the questions step by step in an orderly manner.

He Junfei looked at it and was also a little shocked.

People with this strength are worthy of respect!

But it was just a little shocking. After all, He Junfei firmly believed that, except for Xu Heng, no one could give the correct proof process in such a short period of time!

"As expected of No.3 in this Olympiad competition! It's too strong!"

"It can be said that Feng Hechuan can crush everyone present! Although I feel a little unwilling to say this, but his strength proves everything! He is too strong!"

"Look! That classmate He's training has changed!"

People were discussing.

Some of them couldn't help applauding, "Wow..."

Excited!

Proud!

After all, Feng Hechuan belonged to their province!

18 is their pride!

"Okay! Feng Hechuan, great job!"

"Look! You say 10 minutes, but we will take 10 minutes..."

The praise and complacency on this side is not over yet, Feng Hechuan, who was proving on the blackboard, stopped.

He realized that there seemed to be some problems with the problem-solving ideas he had thought of within 10 minutes.

He stood where he was, staring at his acting paper with his brows furrowed.

He Junfei stood aside, neither arrogant nor impetuous.

10 minutes!

For any of the students present, it is impossible!

So He Junfei has no hope for Feng Hechuan!

Even if he can think of proof ideas, it doesn't mean he can prove it.

This is completely different!

I know how to do it, but my answer is wrong!

This is very different!

He Junfei, "Student, are you okay? If not, let me do it! I have the right way to prove it."

The sound is not loud, but it has a strong smell of gunpowder!

Feng Hechuan is the personal No.3 in this Olympiad competition!

Among all the people present, there is no one with the most outstanding achievements!

If even he can't answer it, it's even more impossible for others!

He looked at He Junfei, his eyes were full of unwillingness.

It seems to say: "If you don't prepare in advance, you are nothing!"

"You wait, wait for me to come up with a question! See, I won't make it hard for you!"

Feng Hechuan turned his head back indignantly.

"Crash..."

There was an uproar.

"Fuck! Even Feng and Chuan were defeated?"

"10 minutes is really too short!"

"I don't accept it! We don't accept it! How could you solve this question in 10 minutes! Besides! If you didn't prepare it in advance, would you know the answer?"

He Junfei smiled slightly, "In order to share more topics with everyone, I have to hurry up!"

"Otherwise, it doesn't make any sense to stay here for a day and a night!"

With that said, He Junfei erased a small part of Feng Hechuan's thoughts, and added later.

"His thinking is not wrong, it is right!"

"But! From here, the direction is off!"

"Here, we need to be clear that the power of the prime factor p must have one of the following situations..."

He Junfei wrote:

In the first type, the p powers of the three fractions are all non-negative integers;

The second type, the power of p of the three fractions has negative numbers, and the two smallest negative numbers must be the same;

He Junfei continued, "For the first case, we can get..."

"For the second case..."

He Junfei also held the acting paper in his hand, so he just copied it!

"..."