In a guest room in New York, there are four people living in the living room. Mr. Qian took the remote control and changed various channels at will, all of which were Western programs and spoke English.

Watching TV pictures is easy, and every time I have to turn around in my mind and convert the language into Chinese, Mr. Qian is very uncomfortable and really boring.

The formalities for the Olympiad have been completed, and now we are waiting for the national teams to be in place, and the opening time is still about ten days.

The three students are very conscious, Zhang Zhi and Li Jiafan are lying on their stomachs to check the problem, and they can't leave their homework behind, so they still have to spend some time every day and work overtime.

What is the male god Yang Fan doing? He finally asked for the wireless password to the hotel, and the school volunteers have also filled in, and he can't wait to contact the other side of the ocean.

"What school did Qi Yue report for?" Yang Fan sent a message to ask his dead friend.

"I inquired for you, it seems that they are all schools in Jiangsu, Zhejiang and Shanghai, and she said to her classmates that the northern climate is very unaccustomed. Yuan Wenbo replied quickly.

Yang Fan's heart sank straight down, and he had a very bad premonition.

On the issue of volunteering, although he and Qi Yueshu had never discussed, Yang Fan was willing to give her enough trust, thinking that he would choose the capital tacitly.

The result is obvious, separated by two places, a full four years. Even if you may encounter it during the Chinese New Year, it is just a normal friendship between classmates.

Young men and women in college rarely fall in love once. Qi Yueshu is not beautiful, but she has a good personality, careful, gentle, in Yang Fan's heart, she is an ideal candidate for his wife, and it is by no means as simple as a girlfriend.

"I see, is this your choice?"

He had already discovered some problems, but he thought that the pressure on the third year of high school was too great, and Yang Fan didn't know how to protect her.

"Would you like to ask directly now?"

Since the Chinese New Year, there has been less interaction between the two, Yang Fan is also busy, Qi Yueshu is even more nervous, and he has not gone out once.

Typing on the phone: Why did you choose to stay in the south, the send button was pressed several times and then retracted, and he deleted the message.

"I'm the last to know about this, so...... So be it. ”

Yang Fan took a deep breath and was ready to prepare.

The mobile phone vibrate, and it was another message from a close friend: "Zeng Da heard that he chose Zhedong." ”

"I didn't even ask you, what the hell are you telling me about this. Yang Fan secretly hated Yuan Wenbo for being ignorant, this was not to make himself feel worse.

"I just wanted to tell you that your peach blossom luck aura has collapsed, and the task of the harem is arduous. ”

"Get out. ”

Yang Fan gritted his teeth. Others are wandering in lovelorn, and his mother is also a dead friend, don't you know how to comfort that broken heart.

"Xiao Hongye is mysteriously not exposed, and no one in the class said anything, but well, I believe that with your sullen energy, you must have known it in advance. Is this going to be a double entry? You are eating from the bowl and looking at the pot like this, which has long aroused the public indignation of the people of the world. ”

Yuan Wenbo was still sprinkling salt on the wound, and Yang Fan's mobile phone was almost broken: "Black, when will you eat five meals of Malatang and then come back to life, bastard." ”

At this time, the phone in the living room rang, and Mr. Qian turned down the sound of the TV to the lowest and said, "Yang Fan, I must be looking for you." ”

Among a few people, they didn't use their mobile phones, and no one on the side used a landline to contact, these days, Li Yunfei's agent came over twice in three days to report the progress.

"Hey, I'm Yang Fan. ”

"Classmate Yang Fan, do you have time now? The agent asked.

This made Yang Fan embarrassed, and during the Olympiad, he often went out to talk nonsense. Li Yunfei talked to Mr. Qian, but promised to go out on the last day of performance.

The performance time and the competition are not conflicting, and can be adjusted a few days before the question.

"Teacher Qian, can I go out?" Yang Fan said.

Teacher Qian frowned and hesitated for a moment before nodding.

"Okay, there's time. ”

"Okay, I'll send a car now, and in an hour, I'll call a car downstairs to pick you up. ”

At the end of the call, Yang Fan returned to his seat and took out a physics notebook.

Teacher Qian glanced at the three students, turned off the TV, walked to Yang Fan's side, and looked sideways at the content of the notes.

After reading a few articles, Mr. Qian was a little displeased, and said: "Yang Fan, the recent Olympiad is the most important, and your total score in the training camp is the first, but you can't relax, and physics is not bad these days." ”

Yang Fan didn't expect this to cause the teacher to be unhappy, and he couldn't pack a ticket to say that middle school mathematics was perfect, so he pondered for a while and said, "Teacher Qian, just take a look by the way, high school mathematics ...... I'm actually pretty good at what I learned. ”

He was full of confidence in his words, but Mr. Qian frowned, there was no bottom in mathematics, and he was thinking about how to educate the students in front of him.

Thinking of an idea, his eyes lit up, and he said, "The two most famous people in physics always know, right?"

"Yes. Yang Fan replied neatly.

Newton and Einstein.

Newton's three major theorems of physics, as long as you go to middle school, who doesn't know.

If you don't want to be a god in your later years and study the occult, your status in the history books will be even higher.

Einstein will not talk about it, and he will affect the trend of world wars.

"Well, we all know about these two great causes, and now I'll tell you a secret, Einstein once said why he went into physics because he was afraid of mathematics. He said that it would not be enough for him to spend a lifetime studying any branch of mathematics. Even he was still trembling in the face of mathematics. ”

Mr. Qian is engaged in mathematics education, and of course supports mathematics. However, Einstein really said this to his friends back then.

Yang Fan suddenly had a reverence for mathematics, and he didn't even dare to go deep into such a great ability, and physics seemed to be a bit pediatric in the face of mathematics.

"We must not be biased, and the development of science must be balanced, so that we can accumulate steadily. ”

The students listened a little, and Mr. Qian smiled and said, "Why did I mention Newton here?" In fact, Newton's status in the mathematical community is equivalent to Einstein's status in modern physics, and Newton's intelligence can be said to be seen once in a thousand years. ”

"What, Newton was also a mathematician, or was he a very bullish mathematician?" Yang Fan was dumbfounded, this news was really exciting.

Calculus is the foundation of modern higher mathematics, a concept that only appeared when Newton wrote Fluid Numbers and Infinite Series in 1671, which was not published until 1736. ”

"Calculus is actually two concepts. Newton established differential calculus more than 300 years ago, and another mathematician, Leibniz, proposed integral calculus at about the same time, which is the origin of modern calculus, and it can be said that these two are the fathers of modern mathematics. ”

The emergence of this theory can be said to have advanced the development of mathematics, and it is not an exaggeration to put the two of them in a high position. ”

"The math we learn in college is actually what they played 300 years ago. When you get to graduate school, you will be a doctoral student, and you will learn mathematics in the last one or two hundred years. With more and more branches, ordinary people can't enter the threshold after exhausting their lives, and even if they are geniuses, they can only excel in two or three fields. Therefore, Yang Fan must have a sense of awe for mathematics. ”

These words also fell on the psychology of two students doing homework.

The three students gave birth to the feeling of looking up to the mountains, and mathematics was really difficult.