Chapter 322 The idol baggage of Song school beauty is gone
8:30 in the morning.
The sun has come out, and the sunlight penetrates the glass and falls on the windowsill.
In the bedroom, both Xu Qingzhou and Xu Qingzhou stayed in bed. They had been running around for seven or eight days and experienced a hearty battle last night. They were already very tired, and now they are even more tired.
Song Yao was sleeping in her cage. Xu Qingzhou didn't feel sleepy, but he didn't remember that he had run out of food and ammunition last night, and now he just wanted to lie down and rest.
School belle Song, who was nestled under the quilt in the morning, was particularly charming. Her fair cheeks were pink, and she would occasionally murmur in her sleep. Especially after the two of them were honest with each other, she completely let go. When she fell asleep, she often hummed. He hugged her a few times.
Looking at the girl in his arms, Xu Qingzhou couldn't help but suddenly realized that when they met for the first time, he was still in a trance after rebirth. The school beauty Song and his little sister Ding Jiahui passed by and glanced at him coldly.
Then there were the memories of borrowing meal cards from the cafeteria and meeting Song Yao by chance in the library. Little by little, memories came to mind.
His life has also undergone earth-shaking changes. According to his original plan, he sealed his heart away from love, concentrated on research, and returned to the imperial path.
As a result, I became addicted to the gentle countryside.
Xu Qingzhou laughed and got out of bed quietly, ready to buy breakfast, but the sound of getting dressed still woke Song Yao up.
Seeing that School Beauty Song had woken up, the guy put his dog paws into the quilt and pinched it, "Are you going to wake up after some sleep?"
Song Yao was already immune to Xu Qingzhou's behavior. She was sleepy and lay on the bed in a daze for a while. Then she came back to her senses and pulled the person who took advantage of her down, pressed her down on the bed, and "squeaked" a few times.
Xu Qingzhou accepted his fate and didn't even struggle. He sat up after being tortured by Song School Belle, "Kiss me as soon as you wake up."
"You stink to death." Song Yao snorted and got up from the bed. The delicate skin on her chest was a little red, exposing her two slender and white thighs.
Xu Qingzhou shook his head and took out Song Yao's clothes from the cabinet and handed them to her, thinking that Song Yao, the school beauty, was becoming less and less burdened by idols.
In the past, when I first moved out, I saw her every morning. Although she was still naked, her eyes were bright, cold and elegant, and she still looked like a goddess.
Take another look now.
At 9 o'clock in the morning, the two of them washed up, got dressed, poured some cat food into Er Meow's automatic feeding machine, and went out to have breakfast.
The Chinese New Year was celebrated on February 9 this year, and they bought tickets for February 5, which is the 27th of the twelfth lunar month.
Ms. Wang called last time and told Xu Qingzhou and the others to go back early, but there was no way. Song Yao had to follow Li Daiyue's project, and he also wanted to read at school.
However, in Xu Qingzhou's opinion, it is good to go back later. Ms. Wang's waiting period for visual fatigue is only three days. The first few days were so friendly, and there were all kinds of delicious food every day, and then there were all kinds of disgust.
After the two had breakfast, they headed towards school.
At 10 o'clock in the morning, the sun fell on the body, finally giving people some warmth. Beijing University was on holiday, and there were more than half the people on campus than usual.
Xu Qingzhou and Song Yao both went to the library. Professor Li Daiyue went to Guangdong Province for a meeting and would not be back until tomorrow, but the task had been assigned to Song Yao.
library.
The two found an empty seat on the third floor.
Xu Qingzhou plans to read "Introduction to Fourier Analysis of Euclidean Space" in two days.
After cramming in knowledge for almost a month, he determined the research direction for the next period of time - the local smoothness conjecture of Fourier integral operators.
This is an important direction in studying the properties of operators in harmonic analysis.
The Fourier integral operator, also called the Fourier integral operator, is an important tool in the theory of partial differential operators and is used to describe and solve problems such as partial differential equations, especially wave equations and hyperbolic equations.
Moreover, it can also reveal the frequency components and phase information of the function by expressing the function as an integral form of a series of sine and cosine functions.
This is precisely related to physics.
Quantum mechanics describes the movement and interaction of microscopic particles, of which the wave function is a key concept.
The Fourier integral operator can convert the wave function from one representation to another, such as changing the space representation into a momentum representation, thereby reflecting the momentum distribution and frequency components of the particles.
Of course, this is only one aspect of the Fourier integral operator.
In addition to physics, in the language of mathematics, it is also an important tool for solving partial differential equations. By using its properties, the form of the equation can be simplified, making it easier to find the solution.
To put it simply, it can be used in both mathematics and physics.
Xu Qingzhou quickly entered the state. On the opposite side, Song Yao had also turned on the computer and started checking the information sent by Li Daiyue.
Time passes rapidly.
At noon, the two of them were waiting for Zhang Qiong at the entrance of the library.
At the end of January, some of the people who had stayed on campus to study left, leaving Zhang Qiong alone in the dormitory. No, she stayed alone for a few days. When she heard that Xu Qingzhou and Song Yao were back, she sent a message to make an appointment.
Farm restaurant.
"Well, the last place we went to was Dongfeng Space City. We watched the satellite launch on the morning of the 27th. We just came back last night."
Song Yao spoke briefly about last week's journey in a leisurely manner.
After listening to Song Yao talking about the places he had visited during this period, Zhang Qiong looked yearning, "I envy you so much. I wonder when I will be like you."
Xu Qingzhou asked curiously: "After one and a half years, you don't have any ideas?"
Even if Zhang Qiong is not a school beauty, she is pretty good in terms of looks. Her personality is somewhat similar to Ding Jiahui, not as good as Ding Jiahui, but she is still fun and carefree.
Logically speaking, there are a lot of people chasing him.
Zhang Qiong shook his head and sighed with a grimace: "I'm not the two of you who can still maintain grades while falling in love."
The pressure of competition is too great, and everyone is the best in exams. Now she wants to spend 24 hours reading books and studying, so she has no time to fall in love.
Xu Qingzhou subconsciously touched his waist without refuting, thinking that falling in love would indeed distract his energy and hurt his waist. When he got up in the morning, his waist was a little numb.
On the side, Song Yao happened to see her boyfriend holding her waist, her pinky hands paused, and a blush crept onto her ears.
Zhang Qiong sat opposite Song Yao and quickly noticed something strange about her: "Xiao Yao, what's wrong with you?"
"It's a bit hot." Song Yao shook her head and picked the fried eggs in the bowl into Xu Qingzhou's bowl.
Xu Qingzhou: "I have it."
Song Yao nodded: "Well, eat one more."
"."
After a moment of silence, Xu Qingzhou came to his senses. He picked the omelette back with a sullen face and said, "I don't need to eat another one."
Zhang Qiong: "?"
What are these two people doing? Aren't they just eggs? Do they need to be like this?
She didn't know that this was not an egg, but a man's dignity!
Two days passed by in a flash. On the evening of the third day after returning, Xu Qingzhou, who was devoted to scientific research, was dragged to the playground by the Song school beauty.
Xu Qingzhou didn't struggle much. Exercise and running cultivated his sentiments and strengthened his kidneys and body, but he was still fine.
Now, under the supervision of the school beauty Song, it is no longer a problem for him to go 5 kilometers.
Overall, I am definitely physically stronger than in my previous life.
On February 3, Xu Qingzhou went to see Academician Chu Jiangfeng of the Institute of Science and Technology. It was the last time he met before the year. He just happened to ask for advice on a few problems he encountered.
Academician Chu Jiangfeng has profound foundation, and his experience and depth of knowledge in harmonic analysis far exceed that of Xu Qingzhou. Basically, once Xu Qingzhou talks about it, Chu Jiangfeng can find the key points and explain them in an easy-to-understand manner.
The last question is related to the convergence of Fourier series in a wider function space.
Academician Chu thought for 10 minutes and said slowly: "Here, let's assume that this integral converges absolutely, that is, ∫x0x0+T|f(x)|dx Fourier series is a basic tool in mathematical analysis. The study of the convergence properties of this thing plays a crucial role in understanding the frequency characteristics and periodicity of functions. In addition to studying the convergence of Fourier series in function spaces such as classic L2 space and Lp space, it can also be explored in wider function spaces, such as Banach space and Hilbert space. Xu Qingzhou nodded, looked at the formula and thought for a moment, then said: "Maybe you can try multiplying f(x) by an exponential function, and then integrate one of the periods of f." "Well, that's a good idea. You can try it." Academician Chu nodded appreciatively and was quite satisfied with this student. He could solve any problem with just one click. At this point, Xu Qingzhou has finished asking questions. Academician Chu asked with a smile: "The Polignac theorem has come to an end, and the tour is over. Are you sure about the research direction here?" "The local smoothness conjecture of the Fourier integral operator." Xu Qingzhou answered. Yang Yongze was lowering his head to calculate, then raised his head and said in a deep voice: "Junior brother, this subject is not simple." Academician Chu nodded: "It is indeed very challenging, and it is also a research hotspot. Many research groups around the world are doing research on local smoothness conjecture, and you are under great pressure from competition." "In the latest research, Professor Doreen Levis of Cambridge improved the results of Mockenhaupt-Seeger-Sogge local smoothness by using tools such as the bilinear method and the square function inequality, and also analyzed the difficulties and possibilities of solving the conjecture. approach. But I heard that the effect is not very satisfactory.” Academician Chu paused and asked with a smile: "Have you thought it through?" He actually wanted to tell Xu Qingzhou that even mathematicians who had been engaged in research in this area for many years had not produced any results, and Xu Qingzhou had to be mentally prepared. Xu Qingzhou nodded and said: "I'm just giving it a try. After all, it's my first time to engage in research in this area." Seeing that Xu Qingzhou was very sure, Academician Chu nodded slightly. Although he felt a little regretful, he supported the general direction. After all, he was involved in many fields. It's a good thing for young people to be aggressive. Anyway, this guy is still young, so he won't be like these old guys who want to try new fields but are already powerless. After coming out of Academician Chu's side, Xu Qingzhou went directly back to the library. In Chengdu, at 6 o'clock in the afternoon, the sky is dark, the street lights have been turned on, and the leaves of the sycamore trees on both sides of the road have long fallen off, leaving only the bare trunks. On the twenty-seventh day of the twelfth lunar month, it happened to be the evening rush hour on Friday. The roads were busy with traffic and people, making it much more lively than at other times. Xu Qingzhou just got out of the taxi and pushed his suitcase towards Wutong Community. There will be more things at the end of the year. Lao Xu and Ms. Wang are busy with work, Lao Song is on a business trip, and Zhang Junli is also dealing with work and has no time to pick him up. He and Song Yao took a taxi back by themselves. Unfortunately, the time was not coincidental, so the two families simply moved the dinner time to Saturday night. Ding~ Before he reached the gate of the community, his cell phone rang with a message.
Song Yao: "Are you home?" Xu Qingzhou: "The entrance to the community." Song Yao: "Say hello to my uncle and aunt for me." Xu Qingzhou replied "Okay" and then pushed the suitcase towards the community. The person on duty at the door was an acquaintance. Uncle Zhang was wearing a military green coat, holding a thermos cup in his hand, and greeted with a smile: "Xiao Xu?" "Yes, Uncle Zhang, aren't you off work yet?" "Hey, you get off work in half an hour. You are a celebrity now. You appear on TV every day. Did you just return to Chengdu today?" "Well, yes, I just arrived today." Xu Qingzhou was ashamed. He was on TV every day. It was obviously Weibo. However, in the eyes of Uncle Zhang and the others, Weibo hot searches and being on TV should be about the same. "I just said that I saw your parents carrying a bunch of vegetables home in big and small bags. Okay, go back quickly. The food is probably ready." "Okay~" At this time, the familiar uncles and aunts had not yet gone out for a walk. Most of the people in the community were workers who had just got off work after a busy day. Xu Qingzhou did not encounter any scenes of being watched. After walking for a few minutes, a familiar old building appeared in front of me. Standing here, you can still smell the faint aroma of food. Go home. Looking at the building, Xu Qingzhou sighed in his heart. No matter how he was doing outside, he always felt a sense of peace every time he came back. "You're standing there acting like a doorkeeper, come in quickly!" Xu Qingzhou's emotions had just been brewing when Ms. Wang's voice suddenly came from the window on the first floor. Xu Qingzhou had no choice but to carry his suitcase up the steps. Now his suitcase has become as heavy as that of the school beauty Song. I don’t know how Song Yao stuffed so many clothes in. In the past, for a vacation of less than ten days like this, he would probably have just brought some documents and stuffed two more clothes and returned. As soon as they arrived at the door, the door was already opened. Ms. Wang took the suitcase and said, "I didn't know how to come in when I arrived. I just stood outside like a silly kid." Although she scolded her, Ms. Wang's brows could not be suppressed and she was beaming with joy. "I just arrived."
Familiar old building, familiar smell of food, familiar chatter. When Xu Qingzhou entered the room, Lao Xu was bringing the stewed ribs to the table. "Dad." Xu Shouyun nodded, with a smile on his face, and said, "Wash your hands and eat." "Okay." Xu Qingzhou smiled and followed Ms. Wang back to the bedroom. The layout of the bedroom has basically not changed much. There are several bags of rice and barrels of oil piled in the corner. They must have been distributed by the work unit. They piled them into his room after they couldn't finish them. It's normal for the bedroom to be used as a storage room, but what made Xu Qingzhou a little numb was that his bed sheets were replaced with bright red bed sheets! "Where are my old sheets?" "I lost it. I've been using it for several years. It's good to replace it. It's black and autumn-proof. This set is so festive." Ms. Wang patted the sheets. "It's quite festive." Xu Qingzhou didn't refute, thinking about finding time to buy a set of lighter colors. This bright red peony was a bit difficult to control. After putting away the luggage, Xu Qingzhou came out, washed his hands, and helped to serve the rice. Ms. Wang was very concerned about her "prospective daughter-in-law" and asked: "Is Xiaoyao home?" "Well, we're here, I think we've all eaten our food." Xu Qingzhou said. Ms. Wang nodded, "That's good. Let her have a good rest. She must be tired after traveling for seven or eight hours in a row." Xu Qingzhou sat down and reminded: "Mom, my son has just come back. Do you have to pay attention to his condition first?" "You?" Wang Xiaping looked at Xu Qingzhou and said, "You are a tall boy, what do you need to care about?" "." There is no more love in the world. (The number of words is not too many, so let’s put it into chapters first) (End of chapter)