An Athlete Held up by an Entertainment Career

Before being discovered by SSE, Xu Qiao had no art-related background at all, just a student of science and engineering.Singing and dancing, acting, and running variety shows are really too difficult for him, who has only performed on stage in kindergarten.

Therefore, he has always been known as a "vase".But not being good at talent doesn't mean that Xu Qiao is not smart. When he took the college entrance examination, he got admitted to T University, one of the best science and engineering colleges, with a high score.

When Yang Hui signed him back then, she also wanted to use Xu Qiao's professional background to set him up as a top student who came from a prestigious school.

It's just that Xu Qiao didn't want to take advantage of the reputation of her alma mater. She was worried that she would shame her alma mater, so she didn't want to cooperate.

You still have to go to school, and you still have to get a diploma and degree certificate.

Xu Qiao looked at the school calendar. As the end of the term was approaching, all the courses would end one after another in the past two weeks, followed by the final exam.

Because he signed a contract with SSE this semester, he has paid a lot of money, and the number of days of class is less than half a month.

Although I have asked for leave with the counselor, the teacher of the professional course is not so easy to talk to.Some of Xu Qiao's professional teachers are strict and rigid, and they are notoriously ruthless. Every time they are absent, they will deduct one attendance point.

Xu Qiao majored in mathematics. The final grade of each course was calculated based on 40% of the usual marks and 60% of the final exam marks.

She had given up hope for the usual marks, so Xu Qiao made some calculations. If she didn't want to fail the subject, she could only strive for more points in the final exam.

Xu Qiao tidied up, went downstairs and took a taxi to T University.

There are no professional courses today, but there is an elective course.It was a course related to communication engineering that he had previously taken in order to get enough credits for graduation.The lecturer is a respected old professor in the field of communication and an academician of the National Academy of Engineering.

The end of a term is always the time when attendance is at its highest.When Xu Qiao walked into the classroom, there were still ten minutes before the start of class, and the seats were already densely packed, only the first row where you could listen to the old professor preaching and resolving doubts at a close distance was still empty.

The professor hadn't arrived yet, and the classroom was very noisy. Xu Qiao moved his ears, and many people regretted taking this course.

"Review two vast fields overnight, read one sentence, and forget three lines."

"It's over, why should I choose this course? Professor Sun's score is so bad. I'm taking an image and temperament training course. At the end of the semester, I can get a high score by walking on the catwalk and dancing, isn't it good?"

Many teachers in universities offer elective courses in order to meet the performance standards required by the school.In order to attract students to come and take his course, the grades are often very loose.

But this Professor Sun is highly respected, and with his status and status, the headmaster didn't dare to show off in front of him when he came.He doesn't need to take elective courses for performance appraisal, they offer courses entirely to satisfy his interest in teaching, and he is notoriously ruthless in giving grades.

Even so, there are still a large number of students who choose his class admiringly, and regret it until the end of the semester.

"Don't talk about it, when the professor asks questions in this class, he will raise his hand to answer. In case the old man remembers our name and gives us a high score—eh? Is that Xu Qiao?" The male classmate chatting enthusiastically Seeing Xu Qiao walking into the classroom, his voice suddenly dropped.

Xu Qiao glanced around and saw that there were no empty seats left in the back row, so she hesitated and sat down in the first row.

In the entire first row, only that solitary figure stood out.

The classmates around saw him come and sit down, discussing in a low voice.

"I'll go, it's really Xu Qiao, he actually came to class."

"I can't keep being a star anymore, so I ran back to continue my studies in desperation?"

"But to be reasonable, it's difficult to graduate smoothly after missing classes for so long. I think there is a high probability that he will delay his graduation."

Most of the students in the classroom had no experience of close contact with celebrities. Although Xu Qiao was confused and had a bad reputation, it did not prevent them from watching the excitement and discussing wantonly while staring at the figures in the first row.

Amidst the noise, Professor Sun stepped into the classroom.

The old man is almost 70 years old, with a straight back, hale and hearty, and walks with wind.He glanced around the classroom and put the roll roll aside: "Yo, it's the end of the semester, and there are quite a few people here. I think everyone has come, so I won't roll roll."

Immediately, many people wailed again.It's rare to come here without a roll call. If you don't roll your roll, you will have no attendance points.

Professor Sun took chalk and wrote down the four characters "quantum communication" on the blackboard neatly. He is engaged in communication engineering, and now when it comes to communication engineering, what cannot be avoided is quantum communication.”

"Quantum communication mainly has two sources, one is a high-frequency single-photon source, and the other is an entangled light source..."

Professor Sun was speaking on the podium, but there were still many students looking at Xu Qiao in the front row and whispering.Professor Sun went back and forth to look at the students who were talking, but they didn't notice it, and their voices were getting louder and louder.

"High-frequency single-photon source, our school also has this condition to conduct experiments, that is, by attenuating high-frequency laser pulses below a single photon—"

Seeing that the speaker didn't know how to restrain himself, Professor Sun's voice dragged on, and he threw the lesson plan on the table with a bang. Many people were startled and fell silent.

The old professor is not young, and his voice is still very loud: "Is it me or you? Come on, whoever wants to speak, I will give him the microphone."

The classroom was silent.

Xu Qiao, who had her head down, couldn't help raising her head, and met Professor Sun's annoyed eyes looking at her.

Xu Qiao was taken aback for a moment, not knowing how she had offended the professor, she blinked innocently.

Professor Sun snorted coldly, seeing that the group of students couldn't stop looking in Xu Qiao's direction when they were talking, so he knew they were talking about Xu Qiao.He had always hated students who didn't abide by the discipline in class, and he even felt a little uncomfortable with Xu Qiao.

Professor Sun picked up the poor lesson plan that he threw on the table, lifted it towards Xu Qiao, and motioned him to stand up: "This classmate, what's your name?"

Xu Qiao replied obediently: "Xu Qiao."

Professor Sun flipped through the roster and sneered: "I said, why do you look so unfamiliar? You have come to my class twice this semester."

He walked up to Xu Qiao and looked him up and down: "You are still a senior, and you are already a senior. This is the attitude you take in class? If you don't want to take this class, then don't choose it. Why give it to me and yourself?" What about blocking?"

Xu Qiao's eyes were clear and her voice was sincere: "Professor, I want to go."

Professor Sun was amused: "Want to go? Then what have you learned?"

After a pause, Professor Sun looked around the classroom, and his eyes fell back on Xu Qiao: "Our class today has students from freshmen to seniors. Come on, Xu Qiao, as a senior, you will learn for your juniors. Girls, tell me why we want to engage in this quantum communication."

Was it checked on the spot?

The students who didn't dare to speak looked at the two of them, thinking that Xu Qiao had offended the old man this time, and it would be bad luck for him.Xu Qiao majored in mathematics and didn't come to class very much this semester. If he was asked to talk about communication engineering, it would be strange if he could talk about it.

Many students know that Professor Sun is actually a very easy-going person on weekdays. If you sincerely apologized and admitted your mistake just now, he will not embarrass you again.If you want to argue with him stubbornly, if he doesn't embarrass you, who will you embarrass?

Xu Qiao didn't hesitate to face Professor Sun "I'm just embarrassing you", and said directly without thinking: "Quantum communication is essentially an applied science combining cryptography and quantum physics." In the world of books, Xu Qiao has studied both aspects.

"Traditional cryptography follows the thinking of symmetric encryption. Encryption and decryption are reciprocal, which is extremely easy to crack. RSA, which is widely used now, is also asymmetric encryption. It is based on 'it is easy to multiply two prime numbers, but it is easy to factorize the product. , it is very difficult to restore it to two prime numbers’, this mathematical fact suddenly increases the difficulty of deciphering.”

Xu Qiao paused, with a relaxed expression: "However, as long as the performance of the computer is sufficient, RSA can also be cracked."

"Since all can be cracked, there is no absolute information security. Mr. Shannon summed up the 'absolutely secure password' to meet the following conditions: the password is really random and used only once, and the plaintext and ciphertext are as long. It sounds like Almost unsatisfiable, but the laws of the quantum world make it possible."

Xu Qiao once did scientific research in a certain book-traveling world, specializing in quantum physics.And the fundamental physics of that world was decades ahead of what it is today.

In terms of academic level, Professor Sun in front of him may not be as good as him.

Xu Qiao spoke at a leisurely pace, talking about her views on quantum physics and how it should be better applied in communication engineering.

Professor Sun was intentionally embarrassing him. At first, he saw that Xu Qiao's words were quite decent, so he couldn't help but sneer.As Xu Qiao talked more and more, he began to feel that something was wrong, and the disdainful smile on his face gradually faded away.

So the students who dared not speak saw that Professor Sun looked at Xu Qiao from anger to eagerness.

The eagerness was as strong as fire, three points more intense than the young man seeing the girl he loves.

In Xu Qiao's voice, Professor Sun was mesmerized, as if listening to a classical concert.

Xu Qiao occasionally slowed down his speech, and Professor Sun looked at him dissatisfiedly like a child who has been robbed of candy, urging him to speak faster.From time to time, I will interject a few words and ask a few questions that I don't quite understand.

The two of them didn't have the attitude of a teacher or a student at all. Looking from the side, they looked like two academic bigwigs talking about cutting-edge academic issues.

The other students looked at each other in blank dismay, and couldn't quite believe their eyes: Is this a dream?Xu Qiao hasn't attended class for a long time, where did he know this? ?

A class passed in the discussion between Xu Qiao and Professor Sun.

When the bell rang for the end of class, Professor Sun woke up like a dream, and his eyes were full of love when he looked at Xu Qiao: "You said that your child has a high academic level, why don't you show yourself? If I don't Ask if you have been hiding? Hey, I said this is not possible, if you have the ability, you should work hard on this road!"

Xu Qiao smiled, but didn't respond.

"Xu Qiao, do you have the idea of ​​taking the postgraduate entrance examination? Really, you choose me, and I will definitely want you after passing the national line!"

Hearing what Professor Sun said, the students on the side looked even more complicated.

Professor Sun is an academician of the Academy of Engineering. Except for occasionally teaching at the school, he spends most of his time leading projects and doing scientific research. He has not accepted graduate students for many years, and he only leads doctoral students from time to time.This time, he even took the initiative to extend an olive branch to Xu Qiao. This is something no one can ask for!

Seeing Professor Sun's expectant eyes, Xu Qiao paused and said, "Professor, I don't plan to take this path at the moment, but if you need help with any work, you can call me."

He actually refused? ?

The classmate who was paying attention to the conversation between the two almost knelt down to Xu Qiao.

Xu Qiao's consideration is that science has a great impact on civilization.He was worried that the theoretical results in his mind, which should have appeared decades later, would appear ahead of schedule, which would trigger a huge butterfly effect.

Professor Sun felt a little regretful, seeing that Xu Qiao was still reluctant to part with her, so to speak, the two exchanged contact information before it was over.

And the students who attended Professor Sun's class today felt a sense of disillusionment.

Human fantasy.

In the evening, this video of the class was posted to a certain science V with millions of followers on Weibo.After the big V was posted, it was forwarded by several entertainment accounts, which immediately caused quite a splash.

@科学前前: Fan-contributed videos.Former member of Chasing Light Group @许乔 discussed quantum communication with his lecturer in class. What do you think of this?

At first glance, the attached video was shot secretly with a mobile phone. The quality of the video is not high, and the camera is dangling.The sound quality was not bad, and the conversation between Xu Qiao and Professor Sun was heard clearly.

Xu Qiao's black fans rushed in immediately.

"There are so many slots, I don't even bother to click on the video, and I know it's hype."

"Hey, this is collusion with the lecturer, planning to set up a schoolmaster? How much did you pay? Take me and share it."

"The most annoying xjb character design, I will see when your character design collapses."

"enmmm, I suggest you to look up the identity of this professor who is colluding and hyping Liren Design, academician of the Academy of Engineering, and a master in the field of communication. Do you think such a person will be trusted by a small star?"

"T University majoring in Communication Engineering passed by, and said that when he saw Academician Sun, his legs trembled and he was about to kneel."

"It's said that it was set up by someone who speculates on the schoolmaster. If you want to speculate, you should have fired it long ago. He is a serious student who got into T University with solid high scores."

"If you say you can't do it, why don't you take a T major?"

"I didn't know that Xu Qiao was from a university of T... I have a good impression of Hong Kong Zhen just because of this. Let alone other stars who study in such a famous school and have such a degree, I don't know how to hype it. Xu Qiao has always been I didn’t use my own school’s articles to promote it.”

"Fuck, I'm going to kneel down to this guy, Academician Sun offered to accept him as a graduate student, but he actually refused!!"

"I passed by as a physics major. I have watched this video several times. What Xu Qiao said is really thought-provoking. I feel inspired a lot. Thank you!"

"Physics major +1, by the way, just now the teacher of the professional course @ all members in the group, let's watch Xu Qiao's video three times, and we will talk about it in class tomorrow..."