Volume 4: Spacetime Singularity Chapter 21 Tangent
"Eight hundred and twenty-eight thousand..."
Ning Yu'an had no idea about this number. In fact, it was normal for ordinary people to have no idea about the magnitude of tens of thousands.
As for the numbers that people can perceive through intuitive vision, thousands and hundreds already seem very large. For most people, larger numbers are just numbers and there is no intuitive experience.
"This speed is relative to the Galactic coordinate system. The English name of this coordinate system is the Galactic coordinate system. In astronomy, this coordinate system is not static, but also has a rotation speed."
As soon as Fang Cheng finished speaking, a question suddenly occurred to him: what is the speed of rotation defined relative to? He had not thought about this when he was listening to the teacher's popular science lecture, and if he were asked this question now, he would not be able to answer it.
But Ning Yu'an probably couldn't think of this level, and it seemed that she wasn't thinking at all.
"Hey, there's one thing I don't understand. If the sun is orbiting the Milky Way, and the Milky Way is also orbiting, then we can only get the relative speed of the sun orbiting the Milky Way."
"Um... you're right. I didn't ask clearly about this..."
"Oh, it's okay, but next time you want to act bee in front of girls, you still need to do more homework."
As she said this, she stuffed the last piece of apple into her mouth, then took a tissue from the box of tissues on the small table next to the sofa and gently wiped her mouth.
"Ah, I'm not trying to pretend, I'm just trying to find a topic. I just sat here with nothing to say."
"Hmm? Are you embarrassed? "
Fang Cheng thought about it carefully and felt that this situation was not too awkward. He did not feel uncomfortable just sitting there without saying anything. Everything was very natural and smooth.
"I don't feel awkward anyway, and it's fine to just stay like this. I'm going back to school in a few days, so you have to cherish the time you spend with me."
Ning Yu'an answered before he did. As she spoke, she pulled cat hair off her sweatshirt. It was stuck to her when she went to Fang Cheng's house to pet the cat a few days ago.
"I...I feel like the topics we have to talk about have been decreasing. Before, we could still chat about gossip about high school classmates, but now we are not in the same environment, and the information we can exchange is getting less and less."
If we just discuss what we have seen and heard in different cities, we will get bored very quickly. Although we can talk about it again during the winter vacation, this topic usually does not last long and cannot last until the end of the vacation.
Fang Cheng felt a little uncomfortable and a little anxious, but he couldn't tell why he was anxious. He hadn't realized that his subconscious was trying to stop this gradual alienation.
But what topics did we talk about before? Besides classmates, teachers and the content of the class, what else was there? He searched in his mind for a long time but couldn't find a few clear categories. It seemed that they just talked about whatever they thought of before.
One of the important reasons why there was no fixed topic at that time was that they spent most of their high school time studying and did not have much free time for you to chat.
It seems that when I was in high school, I just did exercises and exercises every day. I would also enjoy the sea view on my way to and from school, and play games on weekends. Life was simple and fulfilling.
By the way, it seems that games are also a common topic in high school, but it is just a common topic with Ning Yu'an's father, although Fang Cheng is not very interested in those games.
"Hey, I remembered something. Did you take a bath in the sea this summer?"
"No, I haven't swam in the sea for many years, but why did you suddenly think of this?"
"It's the same as mine. As I grow older, the sea becomes less and less attractive to me. When I was a kid, I kept asking to go there."
"It seems that I am the same. I was more interested in the sea when I was a child, but now I rarely go there. It's just that... the main thing for me is that I don't want to wear a swimsuit now, because... I don't want people to stare at me."
After all, even if she didn't wear a swimsuit normally, people would still stare at her, which was already annoying for her.
"Indeed, I had long forgotten what your swimsuit looked like anyway."
No, it seems that I have never seen her wearing a swimsuit, which is a bit of a pity.
"Of course I don't even have a swimsuit. I haven't bought one since I grew up. I wouldn't wear it anyway if I bought it."
As she spoke, she put her hands into the sleeves of her sweatshirt and began to shake them.
"Anyway... I can't escape from the sea. There will be plenty of opportunities to go there in the future. I can buy it when I want to go swimming in the sea."
Fang Cheng nodded vaguely, picked up another apple and started peeling it. Ning Yu'an pulled her feet off the coffee table, sat cross-legged on the sofa, propped up her chin with one hand and looked at him.
"You suddenly ask this, do you really want to see me wearing that kind of clothes?"
Fang Cheng's hand holding the apple trembled slightly and almost hit the blade which was moving at a constant speed.
"No, no, no... I just suddenly thought of my high school days when I could see the sea every day, and then I thought of this from the sea. There's nothing else to it..."
"You were secretly glancing at me just now, right? I've already told you that girls are very sensitive to gazes, and these little movements can be spotted right away."
"I didn't glance at you the whole time. I just glanced at you a few times. I have to look at you when I'm talking to you. Besides, if I get distracted while peeling an apple, I might cut your skin...hiss!"
Really got it.
"Oh, I'm sorry. I shouldn't have teased you while you were peeling. Wait here for a moment while I get you a Band-Aid."
Ning Yu'an got up from the sofa and walked across the living room to her bedroom. Fang Cheng put his cut thumb in his mouth and rinsed it for a while. A weak pain signal was transmitted along the nerves to the brain, which made him feel a little more alert.
But at that time his mind was full of swimsuits, and the intensity of the pain was much less than usual.
After Ning Yu'an returned to her room, she opened the medical bag in the locker under the desk and took out a Band-Aid that was about to expire in two months. When she was about to go back, she glanced at the closet.
Hey, I think I have a swimsuit.
Ning Yu'an opened the wardrobe. Under the hanging clothes were several drawers for underwear. After opening one of them, she found stacked underwear inside. In her vague memory, the swimsuit she bought at that time was between them.
She fumbled for a while and found it immediately by the difference in the feel. As she lifted it up, a bright red bikini slowly rose before her eyes.
Why on earth would I buy something like this… I won’t have a chance to wear it.
