Fall in love with the ex Bai Yueguang

Chapter 27 Sagittarius

It was early morning when Xie Li saw the news.

After he and Tan Ke separated, he went straight to the office, read the documents in the middle of the night, and saw the news at three o'clock in the morning.

Tan Ke said, Li Li, you can think about living with me.

Xie Li heard his heart beating wildly, especially loud in the empty office.

He stretched out his finger and touched the two words on the screen.

Li Li, no one has ever called him that.

The corners of Xie Li's mouth turned up unconsciously, he ran back to the dormitory humming a song, and lay down after washing before replying to Tan Ke.

[Stir-fried chestnuts need sugar: Can I wait until this time is over before I tell you my decision? 】

Tan Ke got up at 05:30 and saw Xie Li send him a message at 03:30.

After washing up and getting on the treadmill, he thought while running that his cub should be kept by his side and disciplined. 03:30 still not sleeping, what do you say?

Xie Li and Cheng Guang devoted themselves to reading the literature.

It is normal to encounter bottlenecks in Ph.D. reading, and it is also normal to encounter bottlenecks in scientific research.

Sometimes even the tutor may not be able to help much on this bottleneck.They have all completed their Ph.D., and there are very few tutors who teach students hand in hand. Shen Zhichuan is actually quite a responsible teacher.

The reason why it is difficult to walk the path of a Ph.D. is that every problem handled is a problem that has not yet been solved in the field.In the face of these issues, all teachers and students are equal.

At this time, the only way is to read other people's papers, understand other people's research methods, and climb the ladder that others have set up.

Successful cases and failed cases are likely to bring inspiration.

Xie Li and Cheng Guang flipped through the articles for a week, and finally locked their eyes on the paper of a small star cluster simulation and comparison project.That team combined Lagrangian and Euler algorithms, and improved the scale problem that deeply troubled Xie Li.

Xie Li felt that this was a direction with great reference value. After discussing it with Cheng Guang, he went to find Shen Zhichuan together with a preliminary idea.

Shen Zhichuan is not very optimistic: "Theoretically, the two projects do have similarities. But their simulated objects are far smaller than your simulated Andromeda. Secondly, comparing the latest observation results in recent years, their analysis of the central region of the galaxy cluster There are still big differences in the simulation of the gas profile. However, this can be regarded as an idea."

Cheng Guang listened carefully and nodded frequently, but Xie Li sat beside him with blank eyes.

Shen Zhichuan thought that the little apprentice was in a bad mood after being hit one after another, and was about to speak to comfort him, but the child suddenly stood up like a wandering ghost, muttering "I thought of the teacher, I'll go first", and then went out by himself.

Cheng Guang was stunned for a while before he realized, he quickly grabbed his things and went after Xie Li.

Xie Li walked towards the office, walking fast, Cheng Guang caught up with him panting.

"Brother, I was thinking that our initial problem was that we ignored the problem of free scale, which led to an error in the initial feedback mechanism, and this error will be constantly amplified during the simulation."

Cheng Guang panted and followed him: "Yes."

Xie Li kept on stepping: "The small star cluster simulation project considers the free scale very comprehensively, but the feedback mechanism is still not accurate enough, mainly because they have a vague grasp of time. For example, where does the jet released by the black hole start? , How far this effect will affect the formation of stars, and they have not found the exact boundary. It is like eating, although eating is included in the entire schedule, but it does not give an accurate node. People can't always Are you eating all night, or are you eating for four or five hours?"

Cheng Guang seems to have followed Xie Li's train of thought: "But how can we find the exact one..."

Xie Li interrupted him: "Just now the teacher emphasized that the size of this star cluster is small, but I suddenly realized that, in fact, there are advantages to being small."

"We can use the existing observation parameters as a starting point to simulate from small to large. Adjust our model through the existing observation parameters to build a small blueprint that is infinitely close to accuracy. Then we will build on this small blueprint. Putting boundaries layer by layer into larger scales."

To establish the size ratio between mice and elephants, it is not really necessary to capture an elephant from the grasslands of Africa.It is enough to find someone to make four muddy footprints of the elephant.

This idea is very unique and amazing.

But the only problem is, they're tight on time.One more mistake, even Cheng Guang's graduation thesis might be delayed.

Cheng Guang digested it for a while, and felt that it was a solution, but he was still a little worried: "Then what if it doesn't match their results?"

Xie Li laughed mischievously, and proposed a bold idea: "What if they are wrong?"

Cheng Guang couldn't decide for a while, and said he wanted to go home and think for himself.

That night, Xie Li was designing a preliminary idea in the office, and received a message from Cheng Guang around six in the morning.

Cheng Guang was squatting on the balcony with a cigarette between his hands when he sent a message to his junior brother.

He read articles all night.It turned out that a similar idea was used by the team five years ago to simulate the formation of galaxies in the first [-] million years of the universe.

It's just that the algorithm structure of that project was problematic, and the result was not very successful, nor did it cause much repercussions.

But after Cheng Guang read the article, instead of feeling discouraged, he felt a sense of desperate pride.

From the probes floating outside the solar system to the human beings staying on the earth, they are facing the same unknown road ahead.

Even if this road is risky, who can guarantee that another road will work?

The risks are the same anyway, so why not give it a go.

Standing on the balcony of the old residential area, Cheng Guang, who had never returned to the bald road, suddenly had an illusion—he was the Pirate King Luffy wearing a straw hat, climbing the mast to ride the wind and waves, and was about to run towards himself. final destination.

His heart was full of pride, and he couldn't help but cupped his palms and shouted towards the sky: "Chong!! Cheng Guangchong!!!!"

The neighbor's dog barked.

"Crazy, why are you howling so early in the morning!"

Xie Li and Cheng Guang became busier than before.

Those old codes maintained by Cheng Guang can be completely thrown away, and the two of them returned to the pre-liberation overnight, raised their arms and started from scratch.

Cheng Guang took the initiative to take care of all peripheral codes and debugging, while Xie Li concentrated on the algorithm.

A few days later, something small happened.

In the afternoon, Xie Li finished his class and went back to the office as usual, only to meet that Professor Liu who didn't like him very much in the corridor, who was standing in the corridor scolding Song Yi.

Song Yi was facing the stairs, when Xie Li came upstairs and met his eyes head-on, the resentful eyes made Xie Li almost step on the wrong steps.

After entering the office, Xie Li found out what happened from Cheng Guang.

There is something wrong with Song Yitou's article, but Cheng Guang doesn't know exactly what the problem is.I only heard that the editor of that journal directly called the school's study style investigation committee and threatened to post relevant announcements on his website.

Lanzhou University has been cracking down on academic misconduct in the past two years, and has set up a special investigation committee. Song Yi has hit the gun.

Xie Li immediately thought of the article that Song Yi came to ask him to do data more than a month ago, and couldn't help but feel drummed.

At that time, Shen Zhichuan said that the data in Song Yi's article did not look right.

He was uneasy, maybe Song Yi changed the place and posted that article again.

Professor Liu scolded Song Yi for more than an hour outside.

The doctoral offices of several groups of astrophysics are all on the same floor, and there are also doctors of atmospheric physics and condensed matter on that floor.The sound insulation of the office is average, and everyone still has the door open, so the movement outside can be heard clearly.

Professor Liu's intentional scolding to others is nothing more than to brush off his own responsibilities.

Cheng Guang was somewhat hurtful, shook his head and sighed: "Song Yi is usually quite stable, why did he suddenly do this kind of thing when he was about to get out of it. Professor Liu is also okay, usually thinking about the student's work when he has nothing to do, this will cause trouble Just pick yourself up clean."

Xie Li typed on the keyboard absently, and accidentally wrote out more than a dozen lines of notes.

It will take a while for the school to investigate this kind of matter and give an opinion on how to deal with it. Everyone got tired of discussing it for a few days and then left it behind. No one noticed that Song Yi disappeared without a sound.

When the weather suddenly became hot, the list of recipients of the Huxue Award was sent out together with the scholarship.

Xie Li came out of Shen Zhichuan's office in the heavy rain, touched the bank card in his pocket that had just received a scholarship of 8000 yuan, was so excited that he even forgot to take his umbrella, and rushed all the way back to his office, turning himself into a happy soaked parrot.

The happy drowned parrot was lying on the chair with its two dull feathers curled up, drying its fur while searching for dating tips on its mobile phone.

But the strategies on the Internet are all similar, blindly aiming to enhance the relationship and take it to bed, full of purpose from the first step.

"Brother," Xie Li planned to ask Cheng Guang's advice, "When you and your sister-in-law are dating, where do you usually go on a date?"

This caught Cheng Guang's attention, and he recalled it for a while before he said: "When we were in college, we just went to the library and watched movies together. Occasionally your sister-in-law asked me to go shopping with her, and I went to the playground a few times."

Cheng Guang looked back, surprised and delighted: "Li, are you in love?"

Xie Li nodded embarrassedly.

"What is it, girl from which department? Call me out to meet you another day, senior brother treats you to dinner." Cheng Guang was excited, "Oh, we Li Ye have grown up, and we have reached the age to fall in love."

Xie Li was not yet ready to introduce Tan Ke to others, so he could only perfunctory Cheng Guang: "It's just the beginning, I will introduce you to each other later."

Cheng Guang was relieved: "Okay, when you get married, the senior brother and the senior sister-in-law will be your witnesses."

It's a long way to think, but now Xie Li's date has not yet been settled.

Cheng Guang thought for a while, and then said: "But you still have to fall in love with the girl and see what she likes. For dating, you must make the other party happy. Like your sister-in-law, she likes to eat. Our date is to go out to find food. Yes, happy to find something delicious."

"Then what if you can't find it?" Xie Li asked curiously.

Cheng Guang smiled: "I'm happy if I can't find it. Anyway, two people are doing what they like together, no matter what the result is, they will be happy."

Xie Li nodded thoughtfully.

He remembered the time he took Tan Ke to the observatory, and suddenly had a little idea in his heart.

The author has something to say: We, Li Li, are a genius little clever ghost.