Just when Xu Yerong took Professor Yan Ming all over the world to look for Yang Tian, at this time, I saw a bus driving into Peking University.

It reads the words "Tsinghua University Exchange Students",

Then Yan Ming received a phone call.

When he hung up the phone, his face was a little unpleasant.

After seeing this, Xu Yerong blinked her big eyes and asked suspiciously, "Teacher Yan, what happened?"

Yan Ming snorted angrily and said: "The students sitting on the bus just now are students from Tsinghua University, and they are also freshmen. ”

"Huh, that's too arrogant, isn't it? ”

Xu Yerong was a little angry, this is the campus of Peking University, not the territory of their Tsinghua University.

Yan Ming said in a low tone: "I called just now and said that a student from the other university solved a problem in the mathematics world, and then said that he came to give an open class to our freshmen, and he was a student······ Hmph, are you really deceiving me that there is no one in the Peking University Mansion?"

"It's just, it's infuriating. Xu Yerong echoed: "Then what should we do now?"

Yan Ming looked at the paper ball in his hand, and couldn't help but laugh again: "It's really not the right time for them to come, there are freshmen here who have solved the four-color conjecture, one of the three major problems in the mathematical world, I want to see how they end." ”

After saying this, he carefully folded the paper ball and handed it to Xu Yerong and said: "You take this and hurry up to find Yang Tian, and then come to me in the open classroom on the third floor, this time it is related to the face of Peking University, you must find him, but you must bring him there." ”

"Well, Mr. Yan, I won't let you down. ”

Xu Yerong clenched her little fists, and her tone was firm.

——

When Yan Ming arrived at the open class teacher on the third floor, it was already crowded.

On the podium, there stood a teacher and a student.

That teacher was none other than Yan Ming's nemesis, Gao Hong.

He is also a professor and belongs to Tsinghua University.

used to be strict friends, but the other party was too narrow-minded, and the two parted ways because of disagreements.

Now that the other party is coming, it is obviously ill-intentioned.

As he expected, after Gao Hong saw Yan Ming, the smile on his face became even stronger.

He stepped down from the stage, looked at Yan Ming and said, "Hehe, isn't this Professor Yan?

Yan Ming snorted angrily, and said in a somewhat unhappy voice, "What are you doing here?"

Gao Hong laughed and said: "It's nothing, it's just for the students I teach to teach you some mathematical knowledge." ”

"You ······"

Yan Ming's face was a little ugly and said, "You are provocative、"

"Haha, what about provocation, come and come Professor Yan, how about helping me guide my students?"

Gao Hong's face was full of smiles.

Yan Ming's face was gloomy and he didn't say a word, looking at the student on the stage, who actually explained the Riemann hypothesis.

The Riemann hypothesis, which is also one of the more well-known problems, has been rewarded by foreign mathematicians with a reward of 10 million US dollars, that is, as long as this hypothesis is proved, a reward of 60 million yuan will be awarded.

Yan Ming himself has studied for a while, but he has no clue, and the young man on the podium seems to be explaining the Tao.

This made Yan Ming not know what to say, if he wanted to point out, the other party was almost the same as pointing him.

Yan Ming felt that he had suffered too many blows today, the Riemann hypothesis, the four-color conjecture, all of them were young and handsome.

You know, he's a math professor, and after so many blows, he almost doubts his life.

Under the podium, his students were not convinced and kept asking questions, but all of them were successfully solved by the student on the stage.

This made Yan Ming's face even darker.

Gao Hong always had a smile on his face, and after the young man on the stage explained, he said with arrogance on his face: "Can you understand your IQ? ”

This sentence immediately angered everyone.

"Damn, what are you talking about?"

All of them are from the Department of Mathematics, and they can enter Peking University, which one is not a stunning talent, and the other party insults them with their IQ, who can bear it?

These students all turned blue with anger, and they stood up one after another, about to teach each other a lesson, but they were stopped by Yan Ming.

Yan Ming said indifferently: "Gao Hong, are you here to declare war?"

Gao Hong laughed and said: "Professor Yan, I don't like to listen to what you say, my Tsinghua students finally found the Riemann hypothesis to teach you Peking University students, how did it become a declaration of war?"

Yan Ming snorted angrily and said, "Gao Hong, do you really think that no one at Peking University can cure him?"

"Oh, I'm curious, does Peking University also have a math genius?"

Gao Hong's tone was full of disdain.

At this moment, Yang Tian is teaching Xiao Ling'er literacy in the library.

This little fox is simply stupid and incorrigible, after teaching a word once, he forgot it after a while, and explained to her for a long time, all in the left ear and out of the right ear.

And he has been pestering Yang Tian to tell her about Zhai, which is the story of the fox and the scholar falling in love.

She never got tired of listening to it, and when she listened, she held her cheeks with both hands, and her bright beautiful eyes kept looking at Yang Tian, blinking, and from time to time she let out bursts of silly smiles like silver bells.

Yang Tian rolled up the book and hit her little head three times and said speechlessly: "What are you thinking in your little head?"

"Oops, it hurts!"

Xiao Ling'er covered her little head that was hurt, and instead of getting angry, her big black eyes lit up and asked excitedly: "Little brother, do you mean to let me come to your room in the middle of the night." ”

Yang Tian was stunned for a moment, and then the corners of his mouth twitched angrily: "Don't watch Journey to the West anymore." ”

"Oh!"

Xiao Ling'er was well-behaved and obedient, and then listlessly stumbled and stumbled with a book.

Yang Tian shook his head, feeling like he was going crazy, and next time he would never bring Xiao Ling'er to the library to read and write.

Just when he wanted to be cleaner, Xiao Ling'er still didn't intend to let him go.

Xiao Ling'er pointed to a word in the book, scratched her scalp and asked, "Little brother, how do you read this word." ”

Yang Tian glanced at it and said, "Stupid!"

Xiao Ling'er was annoyed when she heard this, and said, "Xiao Ling'er is stupid." ”

Yang Tian rolled his eyes and said helplessly: "I said this word stupidly!"

"Ahh

Xiao Ling'er's pretty face blushed at a speed visible to the naked eye, her face was full of embarrassment, and she didn't dare to come out to make trouble anymore with her little hands covering her pretty face.

Yang Tian smiled.

At this time, I saw Xu Yerong running over out of breath, tired and sweating.

"Old Xu, have you been chased by a dog?"

Yang Tian said a word, and Xu Yerong almost lost her breath.

She rolled her eyes, she didn't have time to speak, picked up a bottle of water on Yang Tian's table and drank it.

"I've drunk this bottle of water, is it sweet? ”

The young man's words made Xu Yerong squirt out directly with a mouthful of water.

She coughed twice and glared at Yang Tian and said, "Classmate Yang Tian, I don't have time to worry about you, hurry, come with me." ”

"Where?"

Yang Tian's words hadn't finished asking, but he heard the girl say anxiously: "It's too late to explain, let's talk on the way." ”

As he spoke, he pulled Yang Tian and left without saying a word.

When Xiao Ling'er's ears were finally not so hot, she put her little hand down.

However, after blinking in a daze, she found that Yang Tian had disappeared, and she was aggrieved and confused: "What about the little brother? He won't be disgusted that I am too stupid and don't want me, right?"

And on the way, Yang Tian finally understood the reason for the matter.

Yang Tian rolled his eyes and said, "Lao Xu, didn't I tell you? Whoever asks you will say that the four-color conjecture was proved by you, why do you still involve me?"

Xu Yerong grinded her little silver teeth and said, "Stinky Yang Tian, if you give me a nickname again, I will bite you to death." ”

Hearing this, Yang Tian wiped the cold sweat from his forehead.

Xu Yerong paused and continued: "The four-color conjecture was originally demonstrated by you, how could I rob you of your glory, besides, if I lie, I won't be able to explain it to Professor Yan Ming." ”

"So, now that the people from Tsinghua University are looking for trouble, you mean to let me go over and teach them a lesson. ”

Yang Tian raised his eyebrows.

Xu Yerong nodded, pretending to be pitiful, pulling Yang Tian's palm and coquettishly said: "Good tablemate, this is about the honor of Peking University, you must make a move." “

Yang Tian said helplessly: "Okay, let's go, solve it as soon as possible, don't delay lunch." ”

Xu Yerong: ······

She now finally understands what it's like to have mixed feelings