After a few seconds, his eyes fell on him with some strangeness: "Why?" ”

Xia Butterfly stared intently at the display case in front of her: "Although it is only a stone, it may have traveled in the universe for tens of millions of years before coming, and then traveled many light years beyond the reach of human beings in a lifetime before appearing here. A person's life is only a few decades, but being able to meet it at a certain moment in a few decades is like a ......"

The girl in front of the display case paused, as if trying to find the right word.

She frowned and straightened back, her eyes lit up at a certain moment, and she turned her head to You Lie: "It's like a strange show—"

"Miracles."

You Lie spoke over her voice.

When their eyes met, Xia Kites was stunned in those dark and pure eyes.

When she came back to her senses, the girl hurriedly turned her head and walked to the next showcase.

And the person behind him followed unhurriedly: "Since you like it so much, isn't it a pity that you can only look at it?" Want to touch it? ”

“？”

Xia Kitese replied to him with a wooden face, "Brother, be more restrained, I don't want to go to the prison every year to bring you food." ”

You Lie sneered and laughed: "Can you think of me well." ”

"You're so bold as to pry open the cabinet, and-"

The words are not finished.

A long, cold white hand reached under her nose, the phalanges flexed slightly, and the thin black cobblestone between the knuckles swung slightly, and fell into his clean palm.

This stone is naturally recognized by the summer kite.

Everyone who knew this eldest young master knew that You Lie never left him.

Thinking of a certain possibility, Xia Kites' eyes were startled, and she looked up: "It's... Meteorite? ”

"Meteorite fragments," You Lie raised his hand toward her, "touch it." ”

“……”

Xia Butterfly stiffened her fingertips and took it.

It's pretty much the same as a normal stone, except that this one seems to be more grainy and rougher to the touch.

Xia Butterfly glanced at its companion who looked like a priceless person in the glass display case again, and originally held it in one hand, paused, and held it in two hands.

You Lie was teased by her: "You can't break it." ”

"What if." The girl was expressionless.

"That's not going to make you pay either."

"Conscience will be in debt." She was unmoved.

"Yes."

The man above his head laughed in a low voice: "So the fox still has a conscience?" ”

Xia Kite: "...... Reached. ”

Xia Butterfly didn't bother with him, and put the stone back in his palm, and then breathed a sigh of relief. Then she thought of something: "Is this something that my aunt gave you?" ”

"Hmm."

"Then you're interested in aviation because of Auntie?"

“……”

You Lie seemed to unexpectedly raise his eyes.

Just before the meeting, the little fox was a little uncomfortable, and turned his face away: "I have seen a lot of foreign books at home before, and I have seen you watching related science and technology programs." ”

You Lie put away the stone, lowered his head and smiled: "Yes." ”

"When I was a kid, she told me that when you die, you just go to another planet far, far away, maybe outside the solar system. Humans can't reach it, so they think it doesn't exist. ”

"New world, is it?"

"Probably." You Lie raised his hand and lifted up the display case, he looked at the stone inside, which he didn't know how many light years away, and seemed to pass through it, "Maybe she lied to me, or maybe she believed it like that." Whatever it is, I want to study a spacecraft that can fly farther in place of humanity, to see if there is a new world beyond the end of the world. ”

“… There will be. ”

You Lie paused and looked back.

The girl was so serious that the corners of her eyes were raised, and her amber eyes were crystal clear: "Even if you can't reach it in your lifetime, there will definitely be a day in the history of mankind." Before that day, you can at least help it go a little further, a little closer to the world beyond the end of the world and the aunt in that world. ”

“……”

You Lie was stunned in front of Xia Kites' eyes, and when Xia Iris reacted, she looked away a little uncomfortably.

A faint crimson crept up the girl's earlobe.

Xia Kites pursed her lower lip and couldn't help but leave: "I, nonsense." ”

“… Well," You Lie came back to his senses, his Adam's apple rolled down lightly, and he cleared his throat with a smile, "It's quite nonsense. ”

Xia Kite: "? ”

"For example, the aviation class you just talked about, it and aerospace are two different concepts." You Lie casually pointed to the ceiling, "There is an invisible dividing line above our heads, Karmanline, which is transliterated as the Karman line, which is 100 kilometers above the surface of the earth, representing the edge of the atmosphere. Generally speaking, in China, only the area above the Kármán line is called astronautics. ”

“Karmanline……”

Xia Butterfly repeated it slowly as if chewing, curiosity immediately replaced anger, and she followed him: "What about aviation?" ”

"Generally speaking, the inner atmosphere is called aviation, but there is a more accurate division and is defined as less than 20 kilometers. Twenty to 100 kilometers is more often referred to as adjacent space. ”

You Lie said casually, turned around, "As for the new world you are talking about, outside the solar system, China is called astronautics. ”

Xia Kitese was stunned: "But I remember that it was written in the book that all the foreign ones are astronauts, and they have not been outside the solar system." ”

"This has something to do with the fact that China missed the space race that year. China's aerospace industry started very late, and the satellites in the two bombs and one satellite were regarded as markers, and in addition to the suppression by foreign parties, China basically conducted its own research and established a relatively independent space system, and there were some differences in definitions and names......

“……”

Summer Butterflies have found out.

On weekdays, this young master, who is quiet and cold most of the time, and occasionally opens the microphone is mostly mocking, as long as he talks about aerospace-related, he seems to be a treasure.

In particular, listening to the mixed Chinese and English words coming out of his mouth one after another, it was as if behind this person was the vast sea of stars, colorful planets in the dark universe, turning between his fingers, casual, scattered, and mysterious so mysterious that people couldn't take their eyes off.

Sure enough, knowledge can crown people.

After leaving the planetarium, in the car on the way back, Xia Kitese remembered a question that had puzzled her for a long time.

"So, you are indeed reading all the foreign language books related to aerospace at home, right?" Xia Butterfly turned her head and asked the boy by the window.

You Lie lazily raised his eyes: "Hmm." ”

"I can even understand that, and last week in the basketball gym, I listened to you communicate with foreign teachers very fluently," the little fox squinted his eyes, "Then why did you only get 103 in English last month?" ”

"It's low." You Lie said casually, and the corners of his lips suddenly hooked.

He propped his chin and looked back at her with a smile, "I don't think it's low, the top 10 students in the grade who failed English?" ”

Summer Kite: "......"

This man is annoying.

The little fox turned his face out the window.

You Lie laughed in a low voice: "Don't be angry, I'm joking with you." ”

Xia Butterfly looked at the cloud-dyed sunset on the horizon for a few seconds before slowly turning back: "So your English grades are fake." ”

"Hmm."

"What about the other subjects, I remember that your grades were very average, and all of them were above and below the passing line."

You Lie paused, and suddenly seemed to answer the question: "Do you remember when I told you, what is the engineering concept of aerospace systems engineering?" ”

“……”

Little Fox squinted his eyes, "Mathematics is a quantitative description, physical expression relationships, chemistry is a study of energy expenditure and efficiency." ”

You Lie didn't speak, and the tails of his eyes seemed to be smiling faintly.

Xia Butterfly already knew the answer she wanted.

“……”

This guy is really annoying.

The little fox grinded his teeth and ignored him completely.

But You Lie also tilted his upper body, leaned against the armrest box, and hooked her in a low voice: "According to your habits, we exchange conditions?" ”

“？”

The little fox glanced at him distrustfully.

You Lie: "You keep it a secret for me." ”

"Oh, what about you."

"Me?"

You Lie lowered his voice and smiled, "Give you half-dead English grades, do cardiopulmonary resuscitation and artificial respiration?" ”

Summer Kite: "............"

Xia Kitese felt that if this day ended here, it should be the most relaxed, gentle, and smiling day since she met You Lie.

It was supposed to be a good day.

But fate's favorite thing to do is to play a joke on you where you don't expect it.

The door to the villa's entrance closed behind the two men.

Xia Yuandie walked in front, she was stepping on the slippers she had changed into in the outer entrance, and she saw Aunt Zhao who came out in a hurry.

There was obvious unease in the other party's expression, especially after seeing You Lie.

“？”

Xia Butterfly turned around in confusion.

You Lie had just stepped through the entrance, but his figure suddenly stopped.