Cui Gongming didn't plan to waste time by going to Song Fan again.

But his old friend Yu Chengcheng was so old that he was forcibly dragged away.

"I've come here, and I've already said it, so I'm going to see you, I can't miss the appointment, right?"

After getting into the car, Yu Chengsui persuaded hard.

"Hmph! The old man hated academic liars the most in his life. With this kind of liar, what else do you talk about not showing up or not making an appointment?" Cui Gongming was furious.

"Maybe people are hiding it and sharpening a sword in three years?" Yu Chengsui said with a smile.

"That's why he failed for three years?" Cui Gongming asked rhetorically.

"Hah...... Hua Luogeng's results that year were not very good. Yu Chengsui snorted.

"Hmph, who are you comparing him to? Why don't you talk about Einstein?" Cui Gongming pouted.

The two old professors, like children, are bickering. The car has driven to Fenghao Manor.

"What a magnificent villa area!" Yu Chengsui got out of the car, looked around, and exclaimed.

"Those who can live in this kind of place and enjoy it seem to be the second generation. Can this kind of person calm down and do his studies?" Cui Gongming made a coffin conclusion, "Eighty percent of them spent money to buy some research results abroad, and then returned to China to earn a false reputation!"

During the conversation, Qin Kexin personally greeted her.

"Elder Cui, Elder Yu! Student Qin Kexin, welcome the two masters, and come here. ”

Cui Gongming was full of resentment, and after seeing the polite and generous Qin Kexin, his anger gradually subsided.

Seeing the little girl in front of me, she is not only beautiful, but also very polite and educated, and has a beautiful temperament between talking and laughing.

Cui Gongming's face softened a lot: "Old Yu." Is this the student you brought here?

"That's right, it's her!" Yu Lao smiled, "Qin girl Bingxue is smart, and she is a good material for reading!"

"Hmm!" Cui Gongming nodded, and his first impression of Qin Kexin was also good. "Little girl, work hard, be admitted to Qingbei, I can take you for a few years before I retire. ”

Qin Kexin stuck out her tongue and smiled humbly: "Qingbei is still a little difficult for students. But thank you Cui Lao for your support. ”

"There is nothing difficult in the world!" Cui Gongming encouraged.

looked around again, there was no one else except Qin Kexin.

"What about the kid?" Cui Gongming disliked.

Even Miss Qin greeted her in person, and that kid didn't even come out to meet him, what a big shelf?

Qin Kexin hurriedly explained: "I heard that two masters of mathematics have come to the door, and my classmate is studying at home so that he can pass the examination of the two masters. ”

Qin Kexin didn't lie.

Song Fan heard about the visit of two mathematics professors, so he temporarily studied mathematics again.

"Hmph!" Cui Gongming said, "If I want to test him, he won't be able to study for the rest of his life!" Let's go to his house to meet ......."

The three of them came to the door of the villa.

Leng Yue opened the door and said respectfully: "Two distinguished guests, please come in." My father waited a long time. ”

Father?

Cui Gongming didn't understand this complicated relationship.

Seeing Leng Yue's age, I mistakenly thought it was a sister and brother?

"I don't see your father......" Cui Gongming muttered. "Where's your brother?"

"Brother? I don't have a brother. Leng Yue's face darkened, "I only have one brother, who is dead." ”

Cui Gongming: "......"

The two of them talk like chickens and ducks, and what they say is not on the same channel at all.

"Two professors, welcome to my home......!

At this time, a clear voice came from far and near.

Song Fan heard the doorbell, so he hurriedly greeted him.

"Student Song Fan has met two professors. ”

Song Fan was polite and bowed deeply.

Song Fan admires these old professors who really teach and educate people. All his life, he studied and studied knowledge, not seeking to be heard by the princes, but seeking to pass on knowledge from generation to generation.

I don't know how many talents have been cultivated and how much contribution they have made to this country!

The moment they saw Song Fan, Cui Gongming and Yu Chengsui couldn't help but light up in their eyes, and secretly admired in their hearts.

What a talent!

Especially Cui Gongming, after meeting Song Fan himself, greatly changed his previous thoughts.

I thought he was a disciple who didn't learn and didn't know how to do it, but I never thought that his temperament was so outstanding!

Cui Gongming has taught countless young talents, and he can't find fault with Song Fan.

Since he has the system, coupled with the various abilities he has inherited, Song Fan has already been reborn, and his temperament is elegant and free.

It can give people a kind of - looking at the blue sky with white eyes, as bright as a jade tree in front of the wind!

"Song Fan, good boy, let me ask you—" Yu asked kindly, "Is that proof of Goldbach's conjecture really written by you?"

Song Fan nodded.

Yu Chengsui said excitedly: "Sure enough, it is better than the blue! It is really a blessing for the country and the family to be able to produce such a talent! Your masterpiece that proved Goldbach's conjecture has pointed out a new path for the Chinese mathematical community and even the mathematicians of the world!"

Saying that, the old man Yu Chengsui also bowed deeply at Song Fan: "Please accept the old man's worship!"

Yu Chengsui's worship is for Song Fan's outstanding contribution to the mathematical community, and he is grateful.

"Old Yu, you are serious. Song Fan and Qin Kexin hurriedly helped.

Song Fan was just bored at the time, and he wrote it casually, but he didn't expect it to attract so much attention.

So just now, Song Fan proved some other problems one after another, and wanted to deliver them to the two professors.

Song Fan turned around and went to take the results of his learning just now.

At this time, Cui Gongming said to Yu Chengsui on the side: "Old Yu, you have lost your temper." Things haven't been figured out yet. Let me test the boy first. Let's see if he's really talented, or is he just indiscriminate?"

When Song Fan came back, he was about to hand over the notes for the two professors to see.

But Cui Gongming spoke first:

"Song Fan, I'll test you first. ”

"What proof do you have for the conjecture of three primes that the minor prime variables do not exceed the θ power of N?"

"There is a fixed non-negative integer k such that any large even number can be written as the sum of two prime numbers and the powers of k 2s. Can you give us a brief idea?"

"Berkeley's paradox, is H 0 or not?"

This question stopped Song Fan.

"I don't understand. Song Fan said truthfully. He didn't prepare for these questions just now.

Song Fan has the ability to learn with level 3, but not the level 3 mathematical ability.

Therefore, in the face of professional mathematical problems, it is ignorant. Unless you can give him the time to study briefly.

What the?

Yu Chengsui and Cui Gongming looked at each other.

The questions asked by Cui Gongming are the most basic ideas to prove Goldbach's conjecture.

As a result, Song Fan was at a loss.

"Elder Cui, Elder Yu, we are still just high school students......" Qin Kexin reminded in a low voice.

She couldn't understand the questions either.

"Hmm......" Cui Gongming nodded, and changed to some slightly simpler knowledge of advanced mathematics, "Then ......"

Cui Gongming opened his mouth for "calculus" and closed his mouth for various "geometric originals".

Song Fan was still at a loss as if listening to a book from heaven.

At this time, not only Cui Gongming, but even Yu Chengsui, his face changed slightly, and he began to suspect Song Fan.

"You don't understand that, you don't know that. How did you prove Goldbach's conjecture?" Cui Gongming said angrily.