I Just Want to Be a Quiet Top Student

　　 Before going to bed at night, Shen Qi received a WeChat message from Xu Rui.

　　 It has been almost a week since Xu Rui arrived in the capital. He broke into the men's 100-meter final of the National U19 Track and Field Games. Xu Rui will participate in the men's 100-meter final at 6:30 in the evening.

　　 Shen Qi knows that this 100m final is very important to Xu Rui, and it is related to Xu Rui's future.

　　 "Tomorrow at 18:30, I will be there on time to witness your 100m victory." Shen Qi responded with a message and went to sleep.

　　 The next day, the teaching of the math camp continued.

　　The instructor is Qian Fang, and he lectures on the section of ordinary differential equations.

　　 Except for Shen Qi, the other 25 students are in the classroom.

　　Shen Qi was called alone to a small room measuring 20 square meters. It was him and Sun Erxiong.

　　 The room is very messy. There are blank papers on the table and the ground. Most of the papers are written with mathematical symbols or geometric figures. All kinds of math books are scattered in disorder, and rulers and compasses can be seen everywhere. Bang, Shen Qi kicked a ruler as soon as he entered the house.

　　 It is clear that it is daylight, but the curtains in the room are opaque to light. The only electrical appliances in the room are the fluorescent lamps hanging on the ceiling.

　　 A small blackboard stands at the corner of the wall, and white chalk leaves a mark on the blackboard. This is a painting.

　　 This painting is all made up of straight lines. Viewed from the perspective of a vertical blackboard, a corridor with open doors extends infinitely, and the floor is interlaced with black and white, just like countless chess boards.

　　 Shen Qi glanced at this pattern for the first time, and never left the blackboard again.

　　 The smell of smoke in the room was very strong. Sun Erxiong pinched out the Zhongnanhai cigarette between his fingers and asked Shen Qi: "How is this painting level?"

"Teacher Sun, I don’t understand art, and I cannot give an evaluation from the perspective of painting art, but from a geometric perspective, I like this painting on the blackboard very much. From my understanding, this painting seems to be a cut of the projection line. Scenery, its composition is all straight lines, and the simplest lines outline the most complicated existence." Shen Qi said.

"It seems that you have learned perspective." Sun Erxiong smiled cordially. "Outstanding painters must have a deep understanding of geometry, such as Leonardo da Vinci, Dürer and Alberti, but in turn, do outstanding geometers know how Painting? Well, I think so. Shen Qi, can you paint?"

　　 Shen Qi shook his head: "No, no, I can't talk about a scientist, at most I can do graffiti, draw an emoticon pack or the second element cat ears."

　　 "Okay, sit down." Sun Erxiong asked Shen Qi to sit down, and said: "Formally, besides the mathematics camp instructor, I am also a professor of the Mathematics Department of Yantai University."

　　 "Hello Professor Sun."

　　 "Shen Qi, do you know what I call you alone?"

　　 "Tell me about your ideals in life?"

"Life ideals and the correct three views, of course, I will talk to you." Sun Erxiong pulled out a magazine from a pile of waste paper, and said while turning over: "Mathematics Innovation News sponsored by CUHK, Shen Qi, you are here. A professional mathematics paper was published in this journal, and the title of the paper was "Some New Solutions to Second-Order Linear Non-homogeneous Differential Equations with Constant Coefficients."

　　 "The class is making an axe, laugh at it." Shen Qi was a little embarrassed. In front of the professor of Yan University's Department of Mathematics, his regular mathematics paper on ordinary differential equations is not a remarkable achievement, even a bit Low.

　　 Sun Erxiong closed the magazine and asked: "Shen Qi, I will ask you, are you a student of Zhongda University or Yan University?"

　　 Shen Qi resolutely stated: "Of course I am a student of Yan University."

　　 "Then why are you so indifferent to Yanda when you contribute to a magazine sponsored by Zhongda University?" Sun Erxiong's face sank.

Shen Qi is still wronged: "I...I have limited skills! "Mathematics Research" is so high-end, I am not qualified to submit articles." "Mathematics Research" is a mathematics journal sponsored by Yan University, which is one of the top mathematics circles in China .

"Hehe, don’t be nervous, it’s okay. I’m joking. The mathematics strength of CUHK is still somewhat different from that of Yanda University." "It is still difficult to receive your manuscripts. But don’t worry if it’s okay. After all, you are only 17 years old and less than 18 years old. You are so young and your future is limitless."

"Shen Qi, you see, other students are receiving Xiaoqian's lectures and are studying differential equations in depth, and you have published papers on differential equations in professional mathematics journals. You don't need to listen to Xiaoqian's class." Sun Erxiong said, " So I called you over alone, wanting to have a long talk with you, about life, about ideals, and about the understanding of mathematics."

　　 "That's great, Professor Sun, Chollima often has it, but Bole doesn't often have it." Shen Qi likes to exchange academic issues with professionals.

　　 "Your writing must be a perfect score, hahaha." Sun Erxiong smiled with his palms, seeing Shen Qi more pleasing to his eyes.

　　 After laughing, Sun Erxiong asked: "Have you had breakfast?"

　　 "Yes, soy milk fritters."

　　 "Are you full?"

　　 "I'm full, I ate six fried dough sticks and drank three bowls of soy milk. The discounted breakfast of Yonghe soy milk at the school gate is particularly affordable."

　　 "If you are full, just do the questions, digest and invigorate the stomach, which is conducive to the healthy growth of adolescents during adolescence."

　　 "..." Shen Qixin said, how are all professors in the world a routine?

　　 Sun Erxiong walked to the small blackboard, picked up the blackboard eraser to erase the chalk patterns on the blackboard, and then picked up a piece of chalk to make a new picture.

　　 Sun Erxiong's geometric drawing skills are very solid, he did not need to use compasses to draw a standard circle, at least it looks standard to the naked eye.

　　 Immediately afterwards, Sun Erxiong drew a few straight lines at random without using a ruler, so he slid it so smoothly and pulled out a straight straight line.

　　Six straight lines form a hexagon ~www.readwn.com~ inscribed in the circle.

　　 The six points inscribed between the hexagon and the circle are marked by Sun Erxiong as A, B, C, D, E, and F.

　　 "Do you understand?" Sun Erxiong asked Shen Qi.

Shen Qi nodded and shook his head: "In the sense of Euclidean geometry, I understand it, but in the field of non-Euclidean geometry, I can’t understand it, because the conditions given by Professor Sun are not sufficient, I don’t know that Professor Sun thinks. What do you want me to do?"

　　 "Hehe, just don't understand." Sun Erxiong smiled habitually, and then continued to draw.

　　 At the right margin of the circle and its inscribed hexagon, Sun Erxiong created three new lines, and the three lines intersect at one point. This point is marked by Sun Erxiong as L.

"Based on the pattern on the left, you fill me up with the pattern on the right. I don't care whether you use Euclidean geometry or non-Euclidean geometry. What I want is just a correct answer. Can it be done, Shen Qi ?" Sun Erxiong asked with a smile.

　　 Shen Qi's eyebrows twisted into Sichuan: "Give me some time, Professor Sun, I will do my best."

"It’s okay, don’t be nervous, time and this room belong to you. You can use any drawing tools and references in this room. Okay, I have to buy pork. By the way, Shen Qi, you like celery filling. Chinese dumplings or Chinese cabbage?" Sun Erxiong stuffed the wallet on the table into his pocket, preparing to withdraw.

　　 "Whatever." Shen Qi stared at the blackboard, and dealt with the words absently.

　　Sun Erxiong is unhappy: "You can do the questions casually, and you must not eat dumplings casually!"

　　 Shen Qi: "Can the dumplings stuffed with chives and shrimps work?"

　　 "It must be possible! Wait, I will go to the vegetable market to buy ingredients, and at noon we will eat dumplings stuffed with chives and shrimps." Sun Erxiong was happy, and left the house to buy vegetables.