The whole world thinks I'm a scumbag

"Shall we go get together?" Cheng Ke asked. "Chemical Island is based in private, and there are many very powerful seniors."

Lu Xingyin shook his head: "I stay with my schoolmates."

Cheng Ke looked up at him: the young man in front of him was handsome and fair, with a straight back, as handsome as a little white poplar, exuding a calm demeanor beyond his peers, and he could be remembered at a glance.

And that kind of cautious and jerky is also very obvious. It is obviously the first time for Lu Xingyin to come to this kind of place, and it is also the first time to face his "kind".He sent him a friend application on the same-sex dating website, but nothing came of it, but Lu Xingyin changed his signature to "I have a partner" on the same day, a little flustered and very funny.

"Is your boyfriend here?" Cheng Ke looked at him and smiled. "Don't be nervous—you can go together, we just have a meal and get to know each other. If you don't want to go, I can introduce you to it."

He slightly raised his chin, motioning him to look at the boy who just spoke up: "G City No. [-] Middle School, the moderator of Chemical Island, Muhua Potassium, is him."

Lu Xingyin looked over there.

Potassium Muhua is waving around, pointing out Jiang Shan, he looks very smart, his round eyes are big, but there are many whites, he looks like he is good at calculation and active in interpersonal relationship.

Yi Qingyang stood at the door and called him: "I'm back, Commander Xiaolu—"

Lu Xingyin picked up the schoolbag: "Thank you, I will come with my boyfriend next time."

Cheng Ke smiled—I don’t know whether to believe that he has a “boyfriend”, after he walked a few steps, he turned to his back and said: “This place is very difficult, it’s best to have some professors to teach, and they don’t know the basics. For the basics, I recommend Z Normal University Second Middle School competition training. There is also a laboratory open all day, which is very useful for beginners.”

Lu Xingyin remembered that Chen Chong had made a schedule for them, this time the competition class would be followed by the Z Normal University Sophomore Middle School training class.

He looked back at him and said, "Thank you."

In the evening, several people fought at night with lights on.

Lu Xingyin has been solving the extended question left by Pei Xiaojie.Inorganic computing has always been a relatively complicated knowledge point in the inorganic sector. He checked a lot of things, but he was almost clueless.

Only then did he think of Gu Fangwei—he wanted to reply to his message at noon, but because the charging was turned off, and the afternoon was followed by classes and surprise recordings, he never found time to recharge.

There is a time difference of twelve hours between him and Gu Fangwei, the time is already staggered, and there is very little time to be online at the same time.

With a "ding", the charging port is connected and the phone turns on.

Gu Fangwei called him five missed calls, and sent several new messages.

[What about people?What about people? 】

[Small calculator are you safe?message me back. 】

[I'm sleepy, I'll go to bed first, call me as soon as your phone is turned on.Brother is very worried about you. 】

Lu Xingyin hurriedly dialed the phone and called.

Traveling across the ocean, he and Gu Fangwei rarely called except when they were at Huo's house for the first few days.Because the phone bill is too expensive.

The phone rang a few times, and Gu Fangwei answered, "Hello?"

Lu Xingyin said: "Brother, it's me. I'm fine. My phone ran out of battery during class in the afternoon, so I didn't have time to reply to your message."

"What about that night?" Gu Fangwei's voice was still in his pajamas, hoarse and lazy, "You've been out of class for three or four hours."

"I'm studying." Lu Xingyin's voice became a little cautious, "Go to Huang Feijian to listen to the recording and take notes."

"Ah."

"Brother, go to sleep." Lu Xingyin said, "I won't disturb you anymore."

"Is that so?" Gu Fangwei asked.

Lu Xingyin hesitated for a moment, whether he should tell him about the topic Pei Xiaojie left this afternoon, but Gu Fangwei might not be very happy.

He doesn't sound happy now, Gu Fangwei has always been a little angry. In addition, this beautiful brother is also very girlish. I" fact.

"Nothing to say?" Gu Fangwei heard the long silence here, and his voice was a little discouraged, and then he was lazy, "I will take pictures of fireworks and oceans for you, and I want to share them with you as soon as possible every day, so you have nothing to say to me." .”

"Brother, don't be angry." Lu Xingyin tried his best to keep up with him, "Brother, would you like to read an inorganic calculation problem for me?"

"I don't want to read it." Gu Fangwei said, "I'm your boyfriend, not your tutor, little calculator. Hang up first."

The calling page hangs up.

Lu Xingyin stared at the blank phone desktop, stunned for a while, then lowered his head and took a deep breath.

Someone knocked on the door of the dormitory, and Huang Feijian poked his head in and asked him, "Commander Xiaolu, do you want chocolate? Send it from the dormitory next door."

Lu Xingyin adjusted his mood, stood up and said, "Okay."

While eating chocolate, he collected other learning information.

The chemical island is bustling with activity, and the news is quickly uploaded, and many 999s have been registered. It seems that today's face-to-face activity is going smoothly.

Lu Xingyin didn't really want to ask the big question of "Shen Du" in private, but seeing that there were a lot of people in the group, he sent a message to ask other people in the group about Pei Xiaojie's extended question.

After he sent it, someone responded quickly, but most of them were "don't know", "maybe you don't care about it", "the same answer"...

Afterwards, the moderator [Muhua Potassium] said: "I told Gao Yisheng that I have questions and go back and ask the coach not to spoil the atmosphere of the forum! Can't I post any questions on the forum?"

The group was cold.

It was only then that Lu Xingyin remembered that last time he didn't understand the rules and told them that he was a sophomore in high school, and was mistaken for a student who was still in the first year of high school and was preparing for the sophomore competition.

He didn't intend to waste time on these aspects, and when he was about to close the group chat, a notification popped up on his phone: "You have been removed from the group chat by the administrator."

The new message window popped up again, it was [Shendu].

[Shen Du]: "The real calculation of that question requires the use of quantum chemical calculation software. Gaussian is commonly used in China. There are this software in the computer classroom next to the lecture hall. There are four calculation methods in total. In terms of difficulty, HF≈ordinary hybrid functional< MP2<Double hybrid functional, we have already tried to calculate it, but the result calculated by HF is different from the other three, and we are still thinking about this problem. But this is actually not important, this is not tested in the competition, it just needs to be calculated To assist the understanding of the principle. Just memorize it directly."

[Shen Du]: "Invite you to join the new group chat-Chemical Reef"

[Shen Du]: This is a new group I created. At the beginning, Xuexin Jing started a new forum by himself, so you can add this.In fact, many people in the forum are dissatisfied with the moderator, so don't care if you get kicked out by him.

Lu Xingyin clicked into the group.

In the Chemical Reef Forum, he received a warm welcome.

[Heavy Potassium Dichromate]: "Welcome new members~ That idiot of Potassium Muhua just kicked people casually again?"

【Shen Du (group leader)】: "Yes."

[A Cotton Candy]: "This year's provincial team can't get into the culinary stuff. Their G provincial team needs 20 people. He is just 21. There are seven first-years before him. No wonder he hates freshman year so much."

Shendu@LXY: "There are no rules in this group. The only rule is that it is forbidden to transition into the group and not interrupt others when discussing topics. There are some parts we have sorted out in the group chat files, so you can read them yourself."

Lu Xingyin looked at it, then chatted with [Shen Du] privately, and said thank you again.

Shendu sent another message: [When did you break up with your boyfriend, remember to tell me. 】

The implication in these words is close to straightforward, and Lu Xingyin will not reply.

In cooperation with the integration of information in the Chemical Reef Forum, Lu Xingyin went to the computer room to learn how to use calculation software.

He gnawed at the calculation principle bit by bit, to check those things that looked like ghost symbols.

Analytical derivatives, diffusion functions, density matrix diagonalization...

He feels more and more that chemistry is actually a comprehensive subject. To build up the learning logic of chemistry from the bottom up, there are more divergent knowledge points that he needs to study.

According to his past personality, he would not compete on this issue.

But maybe it was frustrated by Pei Xiaojie's pointing out in class today, but he couldn't answer the basic question, or maybe he was despised by students from other prestigious schools and thought it was a high school atmosphere.

Or maybe it was out of anger with Gu Fang.

He stayed in the computer room all night, and his eyes were red after the night.

Yi Qingyang ran over holding his mobile phone: "Xiaolu Xiaolu! Gu Shen called you here! Did you not bring your mobile phone? It's almost time for class, so tell Gu Shen."

Huang Feijian leaned over to look at his computer: "What the hell is this...qualitative analysis, quantitative analysis...quantum chemical analysis software, what is this??"

Lu Xingyin answered the phone, his voice was still soft and soft: "Brother."

Gu Fangwei coughed over there, but did not speak.

After sleeping and waking up, he probably also realized that yesterday he was probably a bit fierce again under the influence of getting up, so he was embarrassed to apologize directly, but he didn't answer his phone calls, so he went to find Yi Qingyang anxiously and obliquely.

"Well, what questions were you going to ask me last night?" Gu Fangwei asked, "I'm free now, let me help you look."

"I've already figured it out." Lu Xingyin's voice sounded a bit tired and hoarse after the night, "I'm going to class first, brother, goodbye."

He hung up the phone.

Pei Xiaojie taught them physical chemistry today.

Before class, she called up yesterday's PPT, and the page display was moved to the third question, the dipole moment of carbon monoxide: "The nature of the dipole moment of CO, did any students try to calculate it when I went back yesterday? Are you interested in showing the conclusion? "

"Have!"

In the classroom, Lala raised more than a dozen hands.

In the large lecture hall, it can be seen at a glance which school team children have made calculations.Gongyu No. [-] Middle School was still in the front row with their hands raised high, and students from Qingyang Middle School and H Normal University High School also raised their hands.

Once again, the competition class was filled with an invisible pressure-a teacher casually asked expansion questions, and some students would study them carefully to find out the answers.They naturally hope to get Professor Pei's attention.

Being regarded as a top student in the competition class, receiving Pei Xiaojie's attention and recognition-although there is nothing else, this is already a medal of glory!

It's that simple, clear, direct, and secretly competing with each other, no one will be ashamed of it, they will only make themselves more eye-catching and dazzling.

The moderator Mu Huajia raised his hand behind him, his voice was the loudest, and his movements were the largest, making the tables and chairs creak: "I'll forget it!"

He moved too much, and everyone looked at him.

Pei Xiaojie flipped through the roster: "Student No. 49, tell me about it."

"I used quantum chemical calculation software to calculate, and the oxygen points to carbon, which is consistent with what the textbook said." Potassium Muhua looked a little proud, "I printed it out, and I can use a HF calculation method. "

"Wrong." Cheng Ke said casually in front, "We also use the HF algorithm to calculate, and the result of this kind of calculation is the opposite of that in the textbook. Are you really forgetting? Or do you make up the result yourself?"

The atmosphere in the classroom gradually became strange, with undercurrents surging.

"Impossible." Mu Huajia blushed a little, and he insisted, "That's what I figured out, or there was something wrong in the process, and I couldn't make up the result myself."

"Then," Pei Xiaojie interrupted their argument loudly, and turned to Cheng Ke with a clear heart, "What is the result of your calculation?"

"We have used four methods to calculate, and the other three are oxygen pointing to carbon. Only the HF method is the opposite, and the errors are all within the testable range. We don't know the reason for this result, but let's forget it." Cheng Ke glanced back, "And it's printed."

Moderators and sub-moderators compete for the right to speak, and it is not a day or two.

Starting yesterday, Chemical Reef was officially established, taking most of the people from the original Chemical Island

"Then now comes the problem. Everyone knows that the correct answer is oxygen pointing to carbon. It is also written in the book. There are problems with several calculation methods. We also know which one is wrong, but what is wrong with the HF method?" Pei Xiaojie asked, "Yes Do the students know?"

The HartreeFock calculation method is based on non-relativistic effects, BO approximation, and single-electron approximation. The principle involves wave functions and determinants. It is also a very common calculation method in chemical theoretical calculations, and the calculations are relatively simple.

She glanced across the audience, and there was no sound in the classroom.

This is actually the core of the problem that occurred yesterday—many people used the HF calculation method in their calculations and found that the conclusions of the CO part were contrary to those in the textbook, so they came to ask her.

"No one knows?"

Pei Xiaojie's gaze fell to the back row, and she was startled - a handsome boy raised his hand.

She remembered his name: "Deer Xingyin. Do you have any conclusions?"

Lu Xingyin stood up.

Everyone looked at him, with surprise and suspicion in their eyes.

Potassium Muhua in the back row smiled: "Just him? He didn't know the CO dipole moment yesterday, so what can he know?"

Lu Xingyin looked directly at Pei Xiaojie, with a steady and powerful voice: "Yes. In the HF method, only the Paoli mutual repulsion between electrons is considered, that is, the requirement of antisymmetry between electrons with the same spin due to the Fermi subwave function, but the Coulomb Related, there is a qualitative error when fitting the functional, so in the calculation of the CO dipole moment, there will be different results from other methods."

Pei Xiaojie looked at him, and after a moment, asked: "So, what is Coulomb related?"

She stared at his gaze, cautiously, curiously, wondering if this child was showing off his knowledge for the sake of sensationalism, or if he chose to say all this just to gain attention.

Lu Xingyin said: "Due to the repulsion between negative charges between any spin electrons, the probability of an electron appearing in a very close area near another electron at a certain moment will decrease." [Definitions are all references]

Pei Xiaojie finally smiled: "That's right, classmate Lu, you sit down first. The questions left over from yesterday are just an introduction to today's concept of physical chemistry. Next, everyone look up and look at the PPT."

But not many people looked up at the PPT, and everyone's eyes focused on Lu Xingyin again, and their eyes were quite different from before.