you come from the sky

On the morning of the fourth day after resuming work, when Fang Haochen came back after breakfast, he found a letter stuffed in the crack of the office door, with a few words written on the envelope: "Director Fang himself" .

Just looking at these five words, Fang Haochen laughed. Even though the sender was not written on the envelope, and there was no postage stamp - there was a high probability that it was delivered by himself - but just looking at the handwriting, Fang Haochen knew that the letter was written by Bian Yu .

Smiling and laughing, Fang Haochen suddenly remembered Bian Yu's appearance when he wrote a letter to him last time, and the embarrassment of being at a loss came to his mind again, and it was even worse when he recalled it now.Fang Haochen quickly put away the expression on his face, looked left and right at the door like a thief, and after confirming that there was no one in the corridor, he closed the door of his office, sat on the seat alone, and opened the letter.

This time, there was no letter paper folded into a heart in the envelope, and there was no sketch of him on the letter paper.Inside the envelope were several pages of beige paper, and on the first page there was only one line: "Are you angry with me? Or are you avoiding me? You won't even return to your dormitory."

Fang Haochen shook his head, he did not return to the dormitory for many days.It's raining?No, what can Bian Yu do to make him angry?Hiding from the rain?Fang Haochen firmly denied it, he just felt that he had too many distracting thoughts recently, so he must work hard and return to the previous state.

Turning over this page, the second page is an astrophysics problem. The question asks, within what range of mass is a comet with a known speed, will it be captured by the planet’s gravity and revolve around the planet stably?Fang Haochen snorted softly, is this a question from Bian Yu?It's so simple, you only need to follow the law of universal gravitation, and even a child can know the answer in two seconds of mental arithmetic.

Fang Haochen went on to look at the second question. The question of this question is a deformation of the first question. In the question, the mass of the celestial body in the first question is increased until its volume is equivalent to a star. The gravitational force increases, so even if the mass of the incoming comet is not small, it still forms a very unstable orbit, which will revolve around the former in a precession trajectory.But this kind of rotation is only an ideal model. Fang Haochen calculated the trajectory of the comet and pouted slightly. In reality, comets with ice and impurities as the main components will consume themselves in perihelion after perihelion again and again within this orbital radius mass, and eventually crashed into the flames of the star.

Fang Haochen turned to the next page, and the question on the paper was still a deformation of the first question. A small satellite appeared next to the planet in the first question. The question asked was also a comet with a known velocity. , under what circumstances will it be attracted to a planet, and under what circumstances it will be attracted to a moon.After adding a celestial body, the topic became much more complicated in an instant, but it didn't bother Fang Haochen.

The last question is a math problem. Fang Haochen was a little excited at first when he thought that this was a math problem posed by Bian Yu, but after reading the problem completely, he realized that it was just an ordinary probability problem. A pen calculation will give you the answer.

The questions were indeed not difficult, but after reading the four questions, Fang Haochen was even more confused.What medicine does Bian Yu sell in this gourd?What does it mean to give him four uncomplicated questions?Want to test Fang Haochen's business level?Obviously not.A boring activity to pass the time?Probably not.

When Fang Haochen was deep in thought, he found that there was still a page of paper in the envelope, and Bian Yu folded it separately and put it in the envelope, so Fang Haochen left it inside when he took out the letter paper.On the last page, there is another line of text: "You can answer my question quickly, but you will never guess the purpose of my question. I can tell you the answer. I will wait for you in the dormitory at seven o'clock tonight. Don't wait for the time."

What is this for?Do these little things for kids.

Fang Haochen was thinking in a daze when there was a knock on the office door.He hurriedly hid the letter in a drawer before letting the people outside the door come in.

The person who came was actually Liu Huifen, the head of the Calculus Department.

Liu Huifen has always been hot-tempered and quick-talking.No, as soon as she came in, Fang Haochen felt her temper without opening her mouth.

Liu Huifen walked to Fang Haochen's desk, put down a file bag, and did not speak.

Fang Haochen glanced at her, took the file bag, opened it, and it was Bian Yu's first calculation report.

Fang Haochen couldn't help laughing: "He finally figured it out?"

"Hmph." Liu Huifen rolled her eyes and muttered, "It's better not to forget."

Fang Haochen slowed down reading the report, maybe because he felt that what he just said was too aggressive, Liu Huifen softened his tone a little, took two deep breaths, and then asked: "Director Fang, what do you think about Dr. Bian? "

Fang Haochen raised his head and looked at Liu Huifen's eyes, as if he wanted to read out whether the hidden thing behind her words was flowers or a knife.He put down Bian Yu's calculation report and asked Liu Huifen, "What's wrong? What did you hear?"

"No." Liu Huifen replied, "You can read his calculation report." She seemed to be trying to suppress her anger, but in the end she failed: "I have never seen such a calculation report!" Liu Huifen loudly road.

Fang Haochen asked: "Is there something wrong with his calculation?"

"Mistakes are frequent, loopholes are full!"

"You sit first." Fang Haochen asked Liu Huifen to sit beside him, while he picked up the calculation report and read it carefully.To be honest, the preliminary calculation report is not long, and it is only a preliminary determination of the data range. It is not difficult. Let alone Bian Yu, even if Liu Huifen is to do it, the report results will not be much different.This is a job that does not require much ability, but requires patience and care.

It is precisely because of this that there is a problem.

The more Fang Haochen looked at it, the more he frowned. There was indeed something wrong with Bian Yu's preliminary calculation report. Although there was nothing wrong with it at first glance, when he looked closely, there were two or three small mistakes.However, his life is about this small mistake, and the whole report will be overturned for one small mistake, not to mention that he has three or two small mistakes.

Seeing that Fang Haochen was about to finish reading, Liu Huifen also started talking.

"Director Fang, I recognize Dr. Bian's ability, otherwise he would not have achieved the current breakthrough, but it can be seen from this preliminary calculation report that there is definitely a problem with his work attitude. If he is not capable, he can be taught, but Problematic work attitudes are absolutely unacceptable!"

Fang Haochen didn't answer, Liu Huifen went on to say: "In the past few days, I always see Dr. Bian is still outside in the middle of the night. What do you think is there to see outside in this winter? I don't care about his life style. Having said that, but with his work attitude, even the gatekeeper and the cook in the cafeteria in 201 are harder than him."

She picked up the tea mug and took a sip of water, then said: "Dr. Bian should have given me the preliminary calculation report a week ago. We have been pushing back and forth many times, and he said he gave it to me yesterday when he had no choice. Gave me one of this? Is he dealing with me or you? Or is he dealing with 201?"

"What has he been doing for so many days?" Liu Huifen became angrier as she spoke.

But Fang Haochen thought of that letter, and felt terrified, as if he was the one who had a problem with his work.

Did Bian Yu really influence the preliminary calculation report in order to write these things?It shouldn't be. Didn't he also come up with his problem when he drew the picture?Fang Haochen's questions were much more difficult than the preliminary calculation report.

"Bian Yu's thinking is still okay." Fang Haochen said.

Liu Huifen glanced at him, dissatisfied: "Director Fang, why do you always speak for him?"

Fang Haochen lowered his eyes.

Seeing this, Liu Huifen paused for a while, and after thinking about it, her tone became calmer and her voice was much lower: "Oh, Director Fang, although you are my leader now, when you were an operator, you were also under my command. Get up, as the eldest sister, of course I wish you well."

"You are the youngest division chief in 201. I know that as long as Dr. Bian's work is done this time, it will have a good impact on your career. But Dr. Bian, he can't count on him."

Fang Haochen secretly breathed a sigh of relief, it seems that Liu Huifen completely misunderstood, but after thinking about it again, why did he breathe a sigh of relief, what did he have to hide?

However, it is an indisputable fact that Bian Yu's preliminary calculation report was completed very poorly. After sending Liu Huifen away, Fang Haochen decided to have a serious talk with Bian Yu alone at night.

In order not to look like he was on an appointment, Fang Haochen deliberately got off work at five o'clock, staggering Bian Yu's appointment at seven o'clock.

However, when he arrived at the place and looked at Bian Yu's door, he felt something was wrong again, and his mind was in a mess.What if the rain is not here at this time?What if he went out to eat?Fang Haochen thought again of what Liu Huifen told him, in case someone is waiting for someone on a rainy and snowy night?

In that case, go back by yourself.

Fang Haochen thought, then tomorrow he could call Bian Yu to the office logically and tell him about the preliminary calculation report. If Bian Yu asked why he didn't show up for the appointment, Fang Haochen would say that he went, but Bian Yu was not there.

With this in mind, Fang Haochen knocked on the door.

The first sound, no one answered.

Fang Haochen was even a little thankful in his heart that no one was there.

Knock again, and if I'm not there, I'll go back.

Fang Haochen knocked again, and after waiting for a second, he wanted to turn around and leave.

But without stepping out, the door opened.

Bian Yu was appearing at the other end of the door, he looked a little surprised, but still smiled: "I'm afraid I heard wrong, when I opened the door, I saw you."

He froze for a while when he said this, Fang Haochen looked at Bian Yu, under the dim light in the corridor, his eyes turned a deeper color, from fine amber to deep ocean.

Being looked at by Fang Haochen like this made Bian Yu a little forgetful. He stared at Fang Haochen and moved his lips, a string of Russian words slipped from his throat to the tip of his tongue: "Какмимолетноевиденье, Какгенийчистойкрасоты."

After Bian Yu finished speaking, he suddenly laughed.Every time I see him, Bian Yu always smiles, I don't know if this person likes to laugh, or if he can't help laughing when he sees Fang Haochen.

Just like now, Bian Yu blinked. "Understand?" he asked.

Fang Haochen really shook his head.

"as predicted."

Fang Haochen walked into the room and watched Bian Yu wipe off the water droplets on his head, and poured the water from the basin into the bucket, leaving a string of dark water stains on the ground.

"Why do you wash your hair at this time?" Fang Haochen asked, he remembered that the first time he went to the dormitory to meet Bian Yu, Bian Yu was also washing his hair.

Bian Yu laughed again: "Isn't it because I want to see you? I'm afraid I will smell bad."

After he finished speaking, he walked inside, Fang Haochen paused slightly, and sniffed his clothes secretly at the place where Bian Yu turned his back.

"Have you solved those few problems? Did you see the last piece of paper?"

Bian Yu turned around and asked, Fang Haochen quickly straightened his posture so that Bian Yu didn't notice.

Bian Yu didn't pay special attention to Fang Haochen, but went to the corner and dragged out a box, and brought out a big cloth bag from it. The cloth bag was full, and he didn't know what it contained.

"I'm not ready for you to come so early."

As he spoke, he wiped away the water stains on the floor and cleaned the table.

Looking at Bian Yu's busy back, Fang Haochen felt unexplainably uncomfortable for some reason, so he took a deep breath and said without going forward, "Bian Yu, I didn't come here for an appointment."

"I came to you to talk about the preliminary calculation report."

Note:

"Какмимолетноевиденье, Какгенийчистойкрасоты." comes from the famous love poem "To Kane" by Russian poet Pushkin.

The first stanza of the poem reads as follows:

"I remember that wonderful moment when you descended before me, like a fleeting phantom, like the embodiment of pure beauty."

Bian Yu said earlier, "When you open the door, I will see you", followed by three or four sentences in "To Kane", "It's like a fleeting phantom, like the embodiment of pure beauty."