Xueba's Sea of ​​Stars

Chapter 171 Heart of the Country
"Speaking of which, have I told you my home address?"

After putting a cup of hot tea in front of Wu Bin, Bi Wanqing sat across from him and asked.

"Hey, I was investigating secretly, just wanting to surprise you." Wu Bin said while looking around.

I found that his teacher's home is very simple and simple. In addition to the two small square chairs where the two of them are sitting, there is only an Eight Immortals table and a 26-inch TV in the living room, which is similar to his grandfather's home.

"I'm interested." Bi Wanqing took a sip of tea, then looked at Wu Bin and said, "Rip Pu'er tea, try it and see if you're used to it."

"I'm used to drinking tea. My grandfather also loves tea. I drank it every day when I was a child, and gradually I can taste the fragrance of this tea." After Wu Bin finished speaking, he took a sip, closed his eyes and thought about it, and said, "Well, good Tea."

"Look at how pretentious you are." Bi Wanqing smiled and shook his head.

"Oh, by the way, Teacher Bi, I brought the gold medal." Wu Bin took out the gold medal from his pocket and handed it to Bi Wanqing.

He had already called the two teachers at the end of the sponsor's dinner and told them the good news.

When Bi Wanqing was looking at the gold medal, Wu Bin told him some interesting stories about IPhO, as well as the trend of questioning and various answering skills in the past two years.

"Stay here for dinner, your aunt should be off work soon."

After finishing a pot of tea, Bi Wanqing glanced at the clock on the wall and said to Wu Bin.

"Although it is true that I should pay a visit to my teacher's wife, I still have to go to Teacher Cai's house. Why don't I see you next time I come?"

"It's okay." After Bi Wanqing finished speaking, he sent Wu Bin to the door, patted him on the shoulder and said, "I won't say such things as continuing to work hard. University should be your real stage. I believe you will get better and better." The farther you go, the better you go."

"Teacher, you have to take care of your health too, don't suffer because of the competition class."

"Don't worry, I know my body well." Bi Wanqing nodded.

"Then... I will come to see you again, goodbye." After Wu Bin finished speaking, he waved his hand and walked down the stairs.

Teacher Cai's home is not far from here. Wu Bin went to the supermarket on the way to buy some dried fruit gift boxes and a box of milk, and soon arrived there.

Ringing the doorbell of 804, a mature female voice came out of the intercom.

"Hello. Who is this?"

"Hello, my name is Wu Bin. I'm a student of Teacher Cai. Is he there?"

"Oh~ I'm here, come up quickly."

Opening the door, Wu Bin took the elevator to the 8th floor, and met Cai Guoping with a smile on his face.

"Oh, our international champion is here, Peng Pi is shining brightly."

Cai Guoping laughed and said.

"That's not all thanks to you, teacher." Wu Bin said and handed over the two boxes of gifts in his hand. "My mother asked me to bring them here. They are all snacks. Teacher please accept them."

"Oh, this kid can really talk, no wonder our old Cai is saying hello all day long." At this moment, an aunt wearing an apron came out to greet Wu Bin and said, "Come in quickly, I just cooked a table of dishes. "

"Master's wife is good." Wu Bin immediately shouted politely.

"Oh, don't call me Shimu, just call me Auntie."

"Well, Auntie."

After saying hello, Wu Bin and Cai Guoping walked into the living room together. Compared with Mr. Bi's home, Mr. Cai's home was decorated in warmer tones, and all kinds of furniture were available. There was a picture of him and him hanging on the wall. The wife's wedding photo is very sweet.

"You just returned to China, why don't you rest at home for two days, why are you here?" Cai Guoping opened the refrigerator door next to the kitchen, looked at Wu Bin and asked, "Coke or iced tea?"

"Coke is ready."

Cai Guoping nodded, took out a can of Coke from the refrigerator and threw it to Wu Bin.

"I just wanted to bring the medal to you quickly." Wu Bin said after catching the Coke.

"What's so interesting about broken medals?" Cai Guoping opened a can of beer and took two sips: "In the future, when you discover some new particles, new substances, and bring them to me, then my work will not be in vain. "

But then the mistress immediately walked out of the kitchen and said, "My kid brought a gold medal specially for you to see. What are you talking about?" Then she turned to look at Wu Bin, "He is like this, no. To be honest, I’m always telling me at home how great a student is, but you are his student, so you probably know his temper quite well, right?”

Wu Bin nodded with a smile.

"Hahaha, just understand. Do you like sweet and sour food?"

Wu Bin nodded again.

"That's good, then sit down for a while, the food will be ready soon." After finishing speaking, the teacher went back to the kitchen.

Cai Guoping, who had been silent until now, pointed to the kitchen and made a scary look with his teeth and claws, making Wu Bin laugh non-stop.

Cai Guoping also laughed for a while, walked over with a beer and sat next to Wu Bin and asked, "Tell me, what are the more interesting test questions for this IPhO?"

"Is it interesting... Youdao GPS system's relativity correction problem is very interesting."

"Oh? Just wait a minute." Cai Guoping said and walked back to the room, took out paper and pen and put them on the table. "It's interesting. Let me see the explanation."

"Okay." Wu Bin nodded.

When Wu Bin was writing a question for Cai Guoping, Mrs. Cai came out with a plate of pomfret in tomato sauce, put it on the table, looked at the two people who were serious about the topic, smiled, and went back to the kitchen.

"So assuming that there is only the earth's gravitational field around the earth, and there is no other gravitational field interference, and the earth's gravitational field is statically piled up and distributed, the formula can be formulated according to the Schwarzschild solution."

Cai Guoping nodded thoughtfully after hearing this, pointed to the paper and asked, "So if the derivative is less than 1, it means that the special relativity satellite clock runs slower than the clock on the ground, and if the derivative is greater than 1, it means that the general relativity satellite clock is slower than the clock on the ground." Is it always fast on the ground?"

"Well, with the physical formula, it is enough to substitute the relevant data for calculation."

"It's interesting..." Cai Guoping moved the paper in front of him, "Give me the pen, and I'll do the math."

"Okay." Wu Bin nodded and handed the pen to Cai Guoping.

Just as Cai Guoping listed two lines of formulas, Mrs. Cai came out with a pot of short rib soup and said with a smile: "Looking at it this way, I don't even know who is the teacher between you two."

After hearing this, Cai Guoping said indifferently: "This kid is good enough to be my teacher now, there is nothing wrong with him."

"Don't dare, dare not, teacher, you are not ashamed to ask." Wu Bin waved his hand immediately.

But Cai Guoping immediately patted Wu Bin's head lightly, "Stop talking nonsense, just say you can do it, let's see if that's the case."

"That's all right, all right, two college students, eat first, and it's not too late to discuss after eating."

"It will be ready soon." Wu Bin and Cai Guoping said in unison.

Mrs. Cai could only smile and shook her head, sat down and ate first.

Ten minutes later, Wu Bin, who had written the last line of calculation, put down his pen and said, "This means that the general relativity time on the satellite is faster than the clock on the ground."

"Because the landmark gravitational field is stronger than the high altitude." Cai Guoping nodded.

"Well, so the relativity correction of the GPS system in practice is the result of special relativity effects and general relativity effects."

After hearing this, Cai Guoping thought for a while, nodded and said, "This question is indeed a good one."

"Then can we eat now?" Mrs. Cai asked with a smile.

"Eat, eat, serve this kid more." Cai Guoping put the paper and pen aside and said happily.

"I'll do it myself." Wu Bin was about to stand up, but was immediately pushed down by Mrs. Cai.

"The visitor is the guest, there is no reason to let the guests serve their own food, you just sit down."

"Thank you, Mrs. Ma, oh no, Auntie."

Mrs. Cai covered her mouth and smiled, and said, "If you really feel that Mrs. Mrs. speaks well, you can just call me Mrs. Mrs."

"Wow, the teacher's wife is so kind. Teacher, you are so lucky." Wu Bin looked at Cai Guoping and said.

"That's right, this is your wife." Cai Guoping said and gave a thumbs up.

Wu Bin also nodded with a smile.

During the meal, Wu Bin was again shocked by Mrs. Cai's cooking skills. Originally, he thought that Mrs. Pei's sweet and sour short ribs had a good balance of sweet and sour.

This Pomfret in Tomato Sauce is so delicious that you can't even slap it!
However, after quickly eating a bowl of rice, Wu Bin was a little embarrassed to add more rice, so he just stared at the empty bowl in a daze, and Mrs. Cai couldn't help laughing at that dilemma, so she took Wu Bin's empty bowl and walked away. off to the kitchen.

"Thank you, Mrs...." Wu Bin smiled shyly after taking the rice bowl which was full again.

"Come here often if you like, you're welcome." Mrs. Cai couldn't help but touch Wu Bin's head, expressing her love for this shy boy.

After eating, Cai Guoping pulled Wu Bin to sit on the sofa next to him, and asked Wu Bin while watching the news broadcast: "How is it? Have you decided what major to study?"

"The University of Science and Technology does not limit the choice of majors. As a freshman, in addition to modern physics and optical engineering, I also plan to take courses in materials science and polymer science. I am also interested in engineering and information technology. If I have enough time, I will They should all go to class.”

"Is there a goal?"

"Goal? Get full grade points?"

Cai Guoping raised his hand and wanted to give Wu Bin a shot, but he held back in the end, "At least he is an IPhO gold medalist, can you set a bigger goal?"

"Oh, yes! I intend to come up with something in physics, such as combining quantum mechanics and general relativity to get a unified theory."

"Do you study superstring theory?" Cai Guoping asked.

"It's possible, but it's not just that."

"Hahaha, this goal is good, very good!" Cai Guoping patted Wu Bin hard twice, "As long as you solve it, the dynamite award will definitely be yours. Oh! If you can win the dynamite award, I tell you, I go out in the car every day with a loudspeaker to promote.”

"Do you want to publicize that he won the Nobel Prize, or do you want to publicize that the person who won the Nobel Prize is your student?" asked Mrs. Cai who was clearing the table.

"That goes without saying, of course it's to promote that this kid is my student." Cai Guoping said it with confidence.

"You are so shy." Mrs. Cai smiled and poked him with her finger.

"It's the truth." After Cai Guoping finished speaking, he continued to turn his head to look at Wu Bin, "But there are distant goals, and there are also near ones. Didn't you just say that you are also interested in materials science?"

"Yes." Wu Bin nodded.

"Then let me personally give you a development direction, let's study the "heart" of the machine."

"Heart... dirty? Engine?"

"Yes, it is the engine, and if you want to research it, you must study the most high-end aero-engine! Alas! Our country has tried its best for more than half a century, but it has not yet produced a mature and reliable core engine."

"To put it bluntly, aviation is the most advanced, most powerful, and most technologically intensive field in a country. It can be called the crown of modern industry, and the jewel in the crown is the engine."

Hearing the word "engine", Wu Bin couldn't help thinking of Zhao Kehan. This guy went to Jinghua to learn this. I don't know if he has set his goal to this height.

这时蔡国平突然一拍桌，情绪略带点慷慨激昂，“为什么我国首架大飞机C919致相当于人家50年前的波音737！？为什么歼-20比起F-22还有10左右的差距？不就是被发动机给掣肘了！”

"The fourth-generation military low-bypass ratio high-thrust turbofan engine, the fifth-generation military non-geometric structure conversion variable cycle turbofan engine, high-power turboshaft, turboprop engine..."

Wu Bin was a little surprised when Teacher Cai recited the names of engines one after another like a treasure trove. This was the first time he knew that this teacher knew so much about aerospace.

"There is also an F156 engine with a thrust of 119 kN! Why can the F-22 make so many unimaginable body movements in the air? It is because of the installation of two of these things!! It has become the only one at present A fighter that can achieve supersonic cruise without afterburner is amazing.”

"It's really cowhide." Wu Bin nodded.

"So I thought, since you want to learn more when you are a freshman, then set a small goal and learn about everything about engines."

After listening, Wu Bin's eyes couldn't help bursting out, and he nodded vigorously and asked, "At least you have to learn aerodynamics, fluid mechanics, and mechanical design, right?"

"Seeing your reaction here... I feel relieved." Cai Guoping smiled twice, "Not only that, aeroengines need to work under the harsh conditions of high temperature, high pressure, high speed and high load, and they must meet High power, light weight, high reliability, good safety, long life, low fuel consumption, low noise, and low pollution discharge are very demanding and contradictory requirements."

Cai Guoping began to break Wu Bin's fingers while talking, "Look, you have to learn high temperature, aerodynamic thermodynamics, high pressure, high speed, structural mechanics, right? How can these contradictory requirements be realized together? Mechanical design, Machining, metal materials, refrigeration, precision machining, smelting and casting, etc., you have to learn it? And it’s useless to just know a little bit, you have to learn everything.”

"Yeah." At this moment, Wu Bin could only nod his head.

PS: There will be a chapter to add later.In addition, the old man who uploaded the character picture to Pei Jiamin in the character area is so beautiful!It can be said to be quite good.

In addition, if you have any other suitable character pictures, you can also upload them for a look, thank you for your support.

(End of this chapter)