Summer has mango, winter has you

As usual, Mr. Lu from the advanced algebra class walked into the lecture hall with the teaching plan, and met pairs of thirsty and slightly puzzled eyes.Students who have the courage to choose a double degree course in mathematics are either extremely interested or self-motivated, otherwise they can take a shortcut and choose a double degree in economics and management, which is much more practical.The courses offered by their college are mainly theoretical.

However, judging from the situation of the first homework, many students have more than enthusiasm and lack of understanding!

Teacher Lu made up his mind that this class should be taught in a more detailed and understandable way.He is one of the few university professors who attaches great importance to teaching work. He also pays attention to the interaction with his classmates during class, and everything will be fine if he completes the lecture task.

Double-degree courses cannot conflict with the course time of the students’ majors. Most of them are arranged in the evenings and weekends. Saturdays and Sundays are often a 4-hour continuous class. Often in the middle of the class, many students become dizzy asleep.

Teacher Lu was lecturing, looking around in the crowd of people, and soon he found a strange one.No matter how sleepy the others were, they would try their best to hold their eyelids and focus on the teacher, or else they would have fallen asleep lying on the table.Only this one, kept his head down and kept on writing, as if he had gone to a serious class to study by himself.

"Student No. 5 from the left in the fourth row, come and answer this question."

Ning Heng is still thinking hard about a proof, and he doesn't even know where his seat is in the classroom.Tao Xiangming, on the other hand, listened carefully to the class with half understanding. Seeing that Ning Heng was called, he quickly poked him, pointed to a question in the textbook and asked, "Ning Heng, can you do this? The teacher asked you to answer it."

Teacher Lu coughed displeasedly, "Don't whisper to the students next to you, let this student answer independently."

Ning Heng stood up and replied solemnly: "First of all, if polynomials of degree 4 are reducible, they contain irreducible factors of degree 1 or 2—"

"Wait a minute!" Teacher Lu raised his glasses suspiciously, and leaned forward, "Are you... Ning Heng?"

There was some commotion among the students listening to the class.Many of them are amateur mathematics enthusiasts, and they are also very concerned about the news of the competition. Ning Heng's name has recently swept various academic discussion circles related to mathematics. When they saw a real person for the first time, they all stretched their necks to see their appearance.

Ning Heng replied crisply: "Yes, teacher, I'm here to observe."

"Oh..." Teacher Lu had a lot to talk about, but he couldn't directly ask "Why do you have the leisure to come to class with a group of minor students", but he was suffocated to death.

"Then, tell me about this problem."

“好的，F2[x]中的1次多项式只有x和x+1，2次不可约多项式只有x平方+x+1……”

On such a basic question, Ning Heng spoke clearly and easily, but Teacher Lu couldn't laugh or cry.If I knew it earlier, I might as well leave this opportunity to other students.

"Student Ning Heng, please stay after class."

The students sitting around Ning Heng couldn't hold back their curiosity, and leaned over to ask him, "Are you really that Ning Heng? The Ning Heng who got the full IMO score in junior high school? Ning Heng who is Qiu Sai's all-rounder?"

Tao Xiangming saw that this man was close to Ning Heng's face, he quickly grabbed Ning Heng's shoulder and leaned towards him, with a dark face, he said: "He is, but don't be so excited."

The man chuckled twice, "Aren't I worshiping Ningshen? I really like mathematics. It's a pity that I didn't pass the exam because I didn't have enough scores. I was transferred to the Department of Astronomy."

Ning Heng didn't say anything, and nodded politely at the other party.

The next time was going to be tough, the admirer sitting next to him kept trying to see what topic Ning Heng was working on, and Tao Xiangming wanted to beat him to death and make him stick his head out!

Back when he was in high school, Tao Xiangming's deskmate had the same grades as him, and he especially liked to inquire about what homework he was doing, and after inquiring, he insisted on doing it, which made him very tired.But Ning Heng didn't seem to be disturbed in the slightest, and he wrote so concentratingly.

After finally getting out of class, Teacher Lu kindly beckoned Ning Heng to go to the podium, and Tao Xiangming followed behind with two schoolbags on his back.

Teacher Lu understood at a glance that Gan Qing Ning Heng came with a friend.Who doesn't like a good student?Teacher Lu loved Wu and Wu, and asked Tao Xiangming's name very kindly by the way.

"Student Tao Xiangming..." He shook his head helplessly. No matter how good the grades of the students in the double-degree class are, they can't compare to the proud ones like Ning Heng. Those with poor grades have their own profoundness. "It takes a lot more." effort."

Ning Heng nodded approvingly, "Good teacher, I will teach him a lot."

Tao Xiangming sighed inaudibly behind him, Ning Heng quietly reached back, hooked his fingers, and shook them gently.The corners of Tao Xiangming's mouth immediately turned up, tightly wrapped around Ning Heng's fingers, and accepted his comfort with satisfaction.

"By the way, Ning Heng." Teacher Lu suddenly straightened his expression, "I heard from your counselor that you gave up the opportunity to exchange at MIT?"

Ning Heng was taken aback, and the finger that hooked Tao Xiangming suddenly trembled, "That happened at the end of last semester. Didn't the other students not be affected by it, have they already gone?" He thought that time had passed, and no teacher would mention this again. thing.

Teacher Lu relaxed and smiled, "Don't be nervous. I just find it strange. It is said that you gave up temporarily. I don't usually see you in class. I finally met you today. I want to ask you what you think."

"It's just that...may not be able to adapt to life abroad."

This answer was in line with Mr. Lu's expectations. He nodded, "Yes. There is still a chance to exchange in the third year, and there are other schools that want you to go there, so there is no rush. They say you are a loner and don't like to make friends. , I think it has improved now."

Speaking of this, Mr. Lu looked at Tao Xiangming with a lot more satisfaction.He said a lot of words to encourage Ning Heng, and he had a general understanding of his current research direction, and told him that if he wanted to publish a paper on algebra, he could ask himself for guidance.

Tao Xiangming listened quietly the whole time, and when Teacher Lu said goodbye to them, there were not many people left in the classroom.

Ning Heng was very afraid that he would ask him about the exchange, so he blinked and pretended nothing happened: "I'm hungry, let's go have lunch!"

The author has something to say: Ning Heng: (pretend nothing happened, nothing happened...)

Tao Xiangming: Ning Heng... baby... baby...

Ning Heng: (Sensuality makes the mind faint.JPG) Okay, okay, I will recruit everything _(:з」∠)_