God of black technology

This group of students seemed to be new to the Olympiad class.At least Wang Yun and Rong Lei didn't see any familiar faces. Teacher Chen said with a smile, "This is a new student from the Mathematical Olympiad cram school in our Ninth Middle School. I'm in high school."

Speaking of this, Teacher Chen pointed to Wang Yun and Rong Lei and said, "Look, this is your senior brother."

First of all, Teacher Chen pointed to Rong Lei and said, "This is your brother Rong Lei, who won the first prize in the Provincial Mathematical Olympiad and the first prize in the National Mathematical Olympiad. Now he has been admitted by Jin University, and he will study at Jin University when he starts school. He is also the same He was recommended to Jin University in his first year of high school."

Secondly, he pointed to Wang Yun and said, "Your senior brother is even more powerful." When Teacher Chen said this, there was an uncontrollable smile on the corner of his mouth.

Wang Yun is one of his most proud students, along with Yuan Chengde.It can be said that they are the peerless twins of his disciples. Teacher Chen said very solemnly, "Your brother also got the Peking University in the first year of high school. It is the recommendation letter of Jingcheng University. Moreover, the famous foreign schools Harvard, Stanford, and Princeton are all I have sent an invitation letter to your senior brother. Look at you, your senior brother is only a few months older than you, at most two years older, and you are going to the highest university to continue your studies. You can even solve a math Olympiad problem not open."

"I'm not bragging. When you brothers came to the Olympiad cram school, you could do this kind of questions with your eyes closed."

"Come, come, see you, Senior Brother Wang Yun." Teacher Chen said without concealing his pride, "The champion of the provincial mathematics competition, the champion of the national mathematics competition, and the first prize and champion of the IMO competition is the International Mathematical Olympiad. Look at you It doesn't matter whether he can pass the rematch or not."

Although I have heard of the legendary deeds of this big man, I saw this big man standing in front of me with my own eyes.

Many students looked at Wang Yun appreciatively, and it was still Wang Yun who couldn't stand it first. He covered his face and said, "Mr. Chen, don't do this."

Teacher Chen said with a smile, "Did you not even know how to do this simple question before?" Pointing at the blackboard, Wang Yun raised his head to look, er... this question couldn't be simpler.Teacher Chen took a sip of tea with a thermos cup, and then said with a smile, "It just so happens that you are here. Since you are here, don't be idle and help me teach these idiots." After Teacher Chen finished speaking , stood aside with a thermos and said, "Come on, Wang Yun, come on stage and tell them how to solve this problem."

"En." Wang Yun nodded, picked up the chalk and glanced at the question, and said, "My calculation is a bit fast, if you don't understand anything, just ask."

When talking about this, Wang Yun began to write on the blackboard with a pen, and said while writing, "Actually, domestic Olympiad competitions like to ask some partial differential questions. This question can be easily solved with calculus. Calculus For you, it should be the best tool to learn and use at present."

"When it comes to the national competition, the teachers in the question group prefer to ask questions in the field of pure numbers, that is, number theory. At this time, you must understand the complex variable integral method and the sieve method."

After a while, Wang Yun wrote out the answer.Turning around, looking at the juniors and juniors below, he asked, "How, do you understand?"

Emmmm......

Sir, what are you writing about?Why don't we understand even one line of arithmetic?

Is there a simpler formula that can be understood by people, which is simply incomprehensible to people——

The stunned student looked straight at Wang Yun, and then Wang Yun sighed and said, "Sure enough, you haven't read any calculus, have you?"

What the hell, we're here to tutor a high school Mathematical Olympiad, and we still have to read calculus?That stuff, it's amazing as soon as you hear it, are you sure we can understand it?

At this time, Rong Lei stepped onto the podium and said with a smile, "The simplest solution that you can think of is calculus. It seems that none of you have studied calculus. But it doesn't matter, just look at it later. In the Mathematical Olympiad competition, Calculus is really important." As he spoke, Rong Lei took a chalk and wrote down different calculation formulas on the blackboard.

"Can you understand it?" He said again, "Look, doesn't this mean that there are many more steps than calculus, and it is also error-prone?"

The students below nodded. Rong Lei's steps were too cumbersome, which gave them a headache.Wang Yun's steps were much clearer, but they couldn't understand a single word.

Rong Lei smiled, and then said, "This is the benefit of calculus. When you see the questions in the Olympiad, you will know how important it is to know calculus." After a pause, Rong Lei put down the chalk in his hand, " To be honest, this big guy will use calculus when solving problems for the first time. So I also recommend you to take a look at calculus and elementary number theory. If you want to get better results in Mathematical Olympiad, be better Universities value it."

After glancing at Wang Yun, Rong Lei rubbed his nose and said, "Analytic number theory must be read. Of course, don't blindly think that you are done after reading it once. After reading it, understanding is the most important thing, just like I am now, elementary number theory. It's pretty good. But I really don't understand the analytical number theory."

After finishing speaking, the students below can live.Is it really that difficult to analyze number theory in my heart?Even a senior like Kuo De Guo Yi can't understand it.

Teacher Chen saw the stunned eyes of the students, smiled and said, "You really think analyzing number theory is easy, right?"

Speaking of this, he directed Wang Yun and said, "Come on, come on, Wang Yun will teach them a lesson and let them know how difficult number theory is."

"Hey." Wang Yun nodded, picked up the chalk and said, "I'll take the new Mersenne conjecture I solved before as an example, the Mersenne prime number..."

While writing, Wang Yun said, "Three equations are required to be true at the same time, which is the so-called number theory." Wang Yun wrote down a line of formulas on the blackboard that no one could understand and said, "This is the sieve method. The first step." Then he began to write quickly, and after a while, he turned around and looked at the bewildered juniors, Wang Yun smiled and said, "Because time is limited, I Just to explain the difficulty of number theory to you, don’t think that number theory is very simple. The more you study, the more you will find that number theory is actually very difficult.”

Boss, please don’t talk about it, we didn’t understand even one line of your calculation formula, Teacher Chen said with a smile at this time, “You are the boss, the second child, and my third child, how do you know now? Can't understand anything?"

Wang Yun stepped down from the podium, walked to Teacher Chen and asked in a low voice, "Teacher, do you think this will discourage their enthusiasm too much?"

Teacher Chen shook his head and said, "These little guys just need to be beaten, otherwise, they really don't know the heights of heaven and earth."

"They thought the Mathematics Olympiad exam was easy." Mr. Chen was very satisfied with seeing a group of students being hit hard, and he still needed his favorite student to do the job.Even though Wang Yun counted to the end just now, Teacher Chen didn't understand.But it didn't stop him from thinking that Wang Yun was still his favorite student.

Wang Yun smiled and didn't continue talking. Rong Lei leaned into Wang Yun's ear and said, "I think Mr. Chen is actually very caring. When this group of students looked at our eyes just now, several of them were not convinced. Well. As soon as you write calculus on the blackboard with chalk, they are completely confused."

"..." Isn't calculus the most basic requirement?What a surprise.After thinking about it, Wang Yun said, "It can only show that their foundation is still too weak. They don't even know how to do basic calculus. In the future, they will definitely suffer a lot when they take the Mathematical Olympiad exam."

"Study by yourself, think carefully about what your senior brother wrote on the blackboard, and see where you are lacking. Do you really think that you can get any rankings in the Mathematical Olympiad competition like this? Just dream!"

"..." No one spoke, they just lowered their heads and thought carefully about the behavior of the two senior brothers just now.It's so unrestrained, when will I be as good as my senior brother?

Teacher Chen waved to the two of them and said, "Let's go, let's go to the office and chat for a while."

"Hey." Wang Yun and Rong Lei followed Teacher Chen and walked towards the office respectfully.

When they came to the office, one of the teachers said with a smile, "Hey, why did Mr. Chen end get out of class so soon?"

Wang Yun took a closer look, okay, isn't this a physics teacher?

Sure enough, the teacher's gaze shifted from Teacher Chen to Wang Yun.I was taken aback for a moment, "Hey, our IMO champion is back too? Did you come to see Mr. Chen?"

"Yes." Wang Yun nodded slightly, "Teacher, you are in a good mood today."

"Not as good as you, Mr. Chen." The physics teacher gave Wang Yun a blank look, "I asked you to participate in the physics competition, but you didn't participate, otherwise you would be the IPhO champion now. Tell me about it."

Teacher Chen snorted coldly and said, "Isn't the IMO champion cool enough?"

"Hey." Wang Yun smirked and didn't answer. After all, the two teachers were his teachers.It's not good for him to say anything, it's better to just keep silent.

"Okay." The physics teacher put down the pen in his hand and looked at Wang Yun, "How is it now, what does it feel like to enter a leading university in China?"

"There is a lot of pressure." Wang Yun said with a smile, "Everyone is very good. If you don't work hard, you may become a burden at any time, so don't dare not work hard."

"Look at what you said, it feels like our Huaguo's highest institution is like a scourge."

Rong Lei frowned next to him and said, "It's pretty much the same, and Jin University is the same. If you don't work hard, you will become a scumbag. I've been reading at home recently, and I'm almost numb. My mother used to always talk about it after college. It will be easy. Unexpectedly, after arriving at university, the competition will be much fiercer than high school." When he said this, Rong Lei was already covering his face, unable to laugh or cry.

Teacher Chen patted Rong Lei on the shoulder and said, "I believe that you will be fine wherever you go, and you must have confidence. You see, at the beginning, you even thought it would be difficult for you to participate in the provincial finals. Didn’t you still get the first place in the country in the end?”

Rong Lei smiled and didn't say anything. Thinking about it this way, he is indeed quite powerful.It's just that compared with the boss around him, he seems to be a lot paler.

Nodding his head, Rong Lei cheered himself up in his heart.

After chatting with Rong Lei and Wang Yun for a while, Teacher Chen took the two of them to lunch and sent them out of the school.After leaving the school gate, Rong Lei and Wang Yun came to Teacher Tian's home, and they even brought presents specially.After chatting with Teacher Tian all afternoon, under Teacher Tian's enthusiastic persuasion, the two of them walked out of Teacher Tian's house after having dinner.

"Oh." Rong Lei said dumbfounded, "I didn't expect all the teachers to be so enthusiastic."

Wang Yun looked at Rong Lei and said, "For sure, after all, they are all teachers who have taught us, and the school we both went to is not bad."

"By the way, Yunshen." Rong Lei said with a smile, "I have to go home, and there are still some things I haven't dealt with at home. The point is, I haven't read a book today. If I don't go back to read, I'm afraid I will be dragged away when school starts." Down too much."

"When you say that, I also think it's time for me to go home and read." After Wang Yun and Rong Lei said goodbye, they returned home.

My mother was still working outside and didn't come back.

Wang Yun returned to his room, took out his book and began to read.Fluid mechanics is still wonderful, combined with material mechanics, it gave Wang Yun more room for thinking.

By the time his mother came home, Wang Yun had almost gotten carried away watching it.

"Xiaoyun, why are you reading again?" Mother said worriedly, "Did Professor Wan call you today? Did you forget to answer the phone while reading again?"

"No." Wang Yun shook his head, "Professor Wan hasn't called yet. I went to see Teacher Chen in the morning and Teacher Tian in the afternoon, but I didn't receive a call either. Mom, don't worry about these things. I know it myself."

"Look at your high school teacher." My mother smiled, "That's what it should be. If it weren't for your high school teacher, would you be where you are now? People, you still have to have a grateful heart."

"I know." Wang Yun took out the draft paper and calculated, and said while writing, "Mom, if you are tired, go to bed first. I am looking at the results, so I will go to bed right away."

"Okay." Mother nodded. After packing her clothes, she put the suitcase by the door of Wang Yun's room and said, "I've already packed the things for you. When the time comes, Professor Wan will call you. Don't panic. Everything Everything you need is in the suitcase.”

"En..." Wang Yun responded while calculating.

After a while, mother closed the door.

After Wang Yun calculated for a long time, he raised his head and glanced at the time.Before I knew it, it was almost three o'clock in the morning, forget it, let's go to bed first.

Putting down the pen in his hand, he hardly touched the book for two days after returning home, and he felt a little rusty.It seems that in the future, I will not be able to stop reading for such a long time.

After thinking about it, he fell asleep.

The next day, he was woken up by a phone call.