I really just want to be a scholar

Chapter 247 My boyfriend is better than anyone else!

Qin Ke and Ning Qingyun walked around the nursing home with secretary Zhang Yunxuan for a while, and soon approached a tree-lined courtyard.

Before I walked in, I heard the voices of children chirping, and there seemed to be more than a dozen children inside.

Seeing that Qin Ke was a little surprised, Ning Qingyun explained in a low voice: "My grandfather is bored here, and in his free time he would tell stories to the children in the nearby orphanage."

Qin Ke nodded slightly. From this point of view, it seems that Grandpa Ning will not be too difficult to deal with.

Elderly people who like children are generally more kind.

When the three of them entered the courtyard, they heard a girl ask: "Uncle, you said that you graduated from the Mathematics Department of Yale University in the United States, so can you tell me why everyone wants to learn mathematics? No, I never learned well."

Then I heard a slightly deep man's voice saying: "Mathematics is the medium through which human beings understand nature. Any knowledge with laws and predictions is derived from the foundation of mathematics..."

"Tch, it's boring. What you said is the same as what my teacher said. I know it works, but it doesn't make any sense at all. I thought you would say something different after you graduated from the United States! But that's it. , nothing more than that!"

The girl grimaced, causing the children around to burst into laughter.

Just at this time, Qin Ke and the three walked in, and they saw the scene in the yard at once.

I saw a tall and thin old man sitting on a wheelchair, not tall, with sparse white hair, his eyes were always squinting, and he was wearing thick black-rimmed glasses.

Sitting next to him was a hale and hearty old man. The old man looked much younger than the old man. He was wearing a neat suit and his gray hair was neatly combed. He was talking and laughing happily with the old man.

Standing next to the old man in the suit was a young man who looked about 24 or [-] years old. He was wearing a well-tailored white suit and rimless glasses.

At this time, he was surrounded by a dozen children aged eight or nine to thirteen or fourteen asking questions, his face was a little embarrassed and embarrassing, and a little bit angry.

A round-faced girl with a single ponytail and about the same age as Qin Xiaoke was obviously the instigator. While she was arrogantly making faces at the young man, she encouraged other children to ask the young man.

The old man smiled and didn't interfere.

Another boy who was the youngest, seven or eight years old at most, with a shaved head asked, "Uncle, you study mathematics. Let me ask you a question? A family of three needs six chopsticks, isn't it?"

The young man forced a gentle smile and said, "That's right."

The bald boy smiled and said, "But I don't use chopsticks! The correct answer should be four chopsticks and one spoon!"

The children laughed again, and the girl with the single ponytail curled her lips and said, "It's just you who want to chase after sister Ning? We don't agree!"

At this time, when they heard footsteps, everyone's eyes immediately fell on Qin Ke, Ning Qingyun and the other three.

When a group of children saw Ning Qingyun, they cheered immediately: "Sister Ning! Sister Ning is here!" They all surrounded her with a clatter.

The eyes of the old man in the suit and the young man's eyes lit up when they saw Ning Qingyun. The difference was that the eyes of the old man were full of appreciation and satisfaction, while the eyes of the young man were full of surprise and covetousness.

But when his eyes fell on the hands of Qin Ke and Ning Qingyun, his face suddenly became a little ugly, but he was extremely restrained, and he could barely maintain a smile.

The girl with the single ponytail threw herself on Ning Qingjun, and Ning Qingyun had no choice but to let go of Qin Ke's little hand, and hugged the little girl: "Xiaoling, you've grown taller again."

"Hey, sister Ning, you are still so beautiful, we miss you very much! We have received the storybook you sent us last time, thank you!"

This little girl is not pretty, but she is cute when she smiles with small eyes. Ning Qingyun smiled, "It's just as long as you like it."

The children's attention was quickly attracted by Qin Ke next to Ning Qingyun. The girl with a ponytail named Xiaoling rolled her eyes, hugged Ning Qingyun tightly, and asked Qin Ke with a stern face: "Hey, why did you come with our sister Ning?"

The rest of the children also stared at Qin Ke with scrutiny and vigilance.

Qin Ke squatted down, looked at Xiaoling at eye level, and said with a smile, "I guess your expression and hairstyle must be to imitate your sister Ning, right?"

It was the first time for Xiaoling to see a boy who was a few years older than her squatting down to speak so carefully. His equal and gentle eyes, free and easy and confident smile made her feel a little fond of him. The "uncle" who just pretended to look at people with his nostrils all day long is much better!

But she still said arrogantly: "You guessed it right! Sister Ning is our idol! Let me ask you, how is your academic performance?"

Ning Qingjun who was next to him wanted to speak, Qin Ke smiled at her, motioned for him to solve the problem, then looked at Xiaoling and said, "I'm not good at school, I'm always one grade behind your sister Ning. Hey, there's no way, your sister Ning's grades Great, forever number one in grade."

"Hey, of course our sister Ning is amazing!" Seeing Qin Ke praising Ning Qingyun, Xiao Ling and the other children showed complacent expressions.

But Xiaoling launched another "attack": "Oh, your grades are not good, how dare you stand with sister Ning?"

Qin Ke smiled even more happily: "Because I, like you, also regard her as an idol. You dare to hug her, why don't I dare to stand with her?"

All the children blinked their eyes, thinking that it seemed to make sense, but something was wrong, and they were all overwhelmed by the rhetorical question for a while.

Xiaoling thought for a while: "No, I saw it just now. You are holding Sister Ning's hand, right? You must want to chase Sister Ning! If you want to chase Sister Ning, you have to pass our test! Let me ask you, mathematics is so difficult. Difficult, why bother with math? It's not fun at all!"

The young man answered this question just now, and what he got back was a burst of laughter from the children.At this time, everyone's eyes couldn't help but fell on Qin Ke, including the young man with a vaguely hostile gaze, and even the old man and Zhang Yunxuan looked at this high school boy with interest.

Qin Ke asked with a smile: "Your name is Xiaoling, right? You are in the first grade of junior high school this year?"

"Yes, don't change the subject, answer quickly!"

"Then let me ask you a question that you must think you know." Qin Ke took out a piece of paper and a pen from his backpack, and drew two dots on the paper with the pen: "Xiao Ling, how do you combine these two dots?" Dots connected together have the shortest distance?"

"Do you think I'm an idiot? I'm not good at mathematics, and I know that 'the line between two points is the shortest'." Xiaoling took the pen and directly connected the two points with a non-standard straight line.

"Then do you know why the line segment between two points is the shortest?"

Xiao Ling was taken aback, and said, "It's written in the book, and you can see it! Of course the curve is longer than the straight line!" The other children also nodded.

Qin Ke smiled again: "Do you know? There is another very powerful source of this line segment axiom."

He told stories to his younger sister Qin Xiaoke since he was a child. At this time, his expressions combined with his speaking skills easily attracted the children's attention.

"In August 1900, the world-renowned mathematician Hilbert proposed the very famous 'Hilbert's 8 problems' at the Paris International Mathematician Conference, which is known as the world's most difficult to prove mathematics Until now, all 23 questions have not been proved, including the fourth question 'the shortest line between two points is a straight line'."

Qin Ke looked at Xiao Ling and the other children: "Are you surprised that what you take for granted is an unsolved problem in mathematics?"

Xiaoling and the other children were completely attracted and nodded their heads one after another. This was really beyond their expectation.

"Although the mathematics community can only prove that this axiom is applicable to flat spaces, it does not affect its application. Our urban planning, road planning, and even the design of railways and aviation lines, and even various precision machinery, all apply this axiom. Axioms to save manpower, material resources, and time. Do you think mathematics is very useful?"

"Big--!"

"The most interesting thing about mathematics is that it's not just useful, it's fun. We go back to 'the shortest line between two points'. If I say, the distance between these two points, if turned into an arc, will be shorter , do you feel conflicted?"

A boy with a square face said: "Yes, the arc is not a straight line, it contradicts this axiom."

As soon as Qin Ke bent the paper, the straight line drawn on the paper immediately turned into an arc, and the distance between the two points suddenly became closer: "Look, is the shortest between two points a curve or a straight line?"

The children were all stunned.

"The original straight line can be turned into an arc, but the distance between two points is shortened. This is the most interesting part of mathematics. Once its premise is changed, the conclusion is completely different, and it can also be compared with other The integration of disciplines has produced many interesting theories."

"For example, the 'time machine' in the sci-fi movies you usually watch is actually an extended application of 'the shortest line segment between two points', but at this time the Riemann curvature tensor of space is zero, and the shortest line segment connecting two points Renamed as a geodesic, the 'time machine' is a 'closed time-like geodesic'."

Qin Ke reopened the paper and drew one dot as the sun and the other as a villain.

"To give another example of application, here is where we stand, and here is the sun above our heads. Normally, the distance between us and the sun at perihelion is 1.46 million kilometers, even if we take the fastest rocket (with a speed of 36360 km/h), it also takes nearly 167 days to reach the sun."

"However, if we use the 'warped space' that is also extended by 'the shortest line between two points', the distance between us and the sun can be shortened, and the space travel time can be greatly shortened. This is why mathematics is obviously difficult, It’s fun and fascinating.”

A boy excitedly said: "In this way, all the magical technologies described in science fiction movies will appear?"

"Sci-fi films are imagined by writers based on the current knowledge of mathematics and physics. There are right and wrong. The significance of mathematics is to tell us what is right and what is wrong. Let me tell you a little trick. When a coin is tossed upwards, does it land with a higher probability of heads or tails?"

Xiaoling raised her hand and replied, "The probability is equally high! The teacher said it!"

"Correct! But just as high a probability, and that's just book theory. In reality, if you flip a coin routinely with the flick of your thumb, the odds that the side that started the toss up is still up when it lands are about It's 51%. Want to know why?"

The children said in unison: "Think!"

Qin Ke smiled and said: "If you want to know, you must learn mathematics well. Even if you don't want to know the reason, but from friends who are good at mathematics, such as me, if you know the result, you will be better than others when you toss coins with others in the future. A little bit more winning percentage, right?"

All the children also laughed together: "Yes! Thank you brother!"

Before they knew it, the hostility in the children's eyes towards Qin Ke had completely disappeared, and they even became a little closer.

Xiaoling bit her lip and said, "Now I admit that mathematics is indeed useful and interesting, but it is really too difficult..."

"How to simplify complex mathematics problems and make them easier to learn is the responsibility that those of us who love mathematics should shoulder. I have recently taken time to do this with your sister Ning, such as simplifying junior high school mathematics. , so that it can be better promoted and mastered, the workload is a bit heavy, we only wrote the first two pages, if you are interested, you can read it first.”

Qin Ke took out one of his notebooks and handed it over, and the children happily took it.

After reading it in just two pages, Xiao Ling's eyes lit up: "Hey, your writing is simpler and more interesting than textbooks. If our math textbooks are like this, I can learn it."

She glanced at Ning Qingyun again, and finally turned her gaze back to Qin Ke, pouted and said, "I admit that you are qualified to chase after Sister Ning."

Ning Qingyun pursed her lips and smiled, looked at Qin Ke with pride, and then pulled him to his grandfather Ning Jingguang: "Grandpa, I'm back to see you."

The old man narrowed his eyes even more. He glanced at Ning Qingyun, then at Qin Ke, and then pointed at the old man and young man beside him with a smile: "Yun'er, this is Grandpa Feng, my old classmate from the past. , this is Feng Qijun, grandson of Grandpa Feng, who played with you when he was a child, do you remember?"

The young man Feng Qijun didn't seem to see the hands that Ning Qingyun and Qin Ke held together, and he extended his hand gently and politely: "Sister Qingyun, I haven't seen you for a long time. When you were four years old, I visited your house, do you remember? "

Ning Qingyun didn't reach out, but smiled, and said politely and distantly: "Hello. I was too young at that time, so I didn't remember it."

A hint of annoyance flashed in Feng Qijun's eyes, but he quickly covered it up and extended his hand to Qin Ke: "Feng Qijun, I'm a graduate student in the Mathematics Department of Yale University. I don't know what to call him?"

Qin Ke still looked lazy, and shook his other hand with a smile: "Qin Ke, a sophomore in Yingyuan High School."

Feng Qijun stretched out his right hand. Originally, Qin Ke should have stretched out his right hand to shake hands, but at this time his right hand was holding Ning Qingyun together. How could he let go of his girlfriend just because he shook hands with this strange guy? Use your left hand to shake hands with Feng Qijun.

Feng Qijun snorted softly: "It turned out to be Qingyun's classmate. I don't know which university you plan to go to?"

Qin Ke blinked: "I will go to whichever university Qingyun goes to."

"I heard that Qingyun has excellent grades, so he will only go to Qingbei, right? You?" Feng Qijun spoke contemptuously.

Qin Ke turned to Ning Qingyun and said, "This Mr. Feng seems to think that I can't go to Qingbei."

Ning Qingjun smiled slightly at Feng Qijun. When the latter was lost in thought by the beautiful and moving smile of the girl, he heard Ning Qingjun say in a cold and flat voice: "You just came back from abroad? Maybe you haven't heard of it?" For my boyfriend's name, you might as well search the Internet for 'Sakura Garden High School Qin Ke', so you won't ask such idiotic questions again. My boyfriend is better than anyone else!"

This is Ning Qingyun, who is as cold as a flower of a high mountain in front of other boys who covet her, she doesn't flinch at all!No stage fright at all!Full of attack power!

　Thanks to "Uji" and "Huangchengjue" for their rewards!

　　Thank you for your monthly tickets and recommended tickets!
　　
　　
　
(End of this chapter)