Sunday afternoon.

After dinner.

Separated from Tang Wan in front of the gate of the women's dormitory building, Lu You didn't stay long, and hurried back to the dormitory.

Outdoors in the summer, it's really not for people.

Not to mention walking, even if the pestle does not move in the shade of a tree, you can sweat profusely.

In particular, Lu You also carried a schoolbag containing a laptop, and the heat could not be dissipated at all, as if he was in a stove.

Lu You stepped over two steps and went upstairs as fast as he could.

As he passed the corner between the third and fourth floors, a familiar and unfamiliar voice called out to him.

"Lu You?"

Lu You looked up.

I saw a tall and thin boy wearing short-sleeved shorts and slippers and carrying a garbage bag walking towards him.

"It's you! What a coincidence! ”

Lu You's heart moved, and he immediately remembered the boy's name.

Su Xinghe.

Like him, from the province of the month.

Zhang Zhichuang's good friend is very strong in physics.

The corners of Lu You's mouth rose and said, "I haven't seen you for a long time, but I didn't expect you to be at Capital University." ”

Su Xinghe stopped in front of Lu You and said with a smile: "Capital University ranks first in physics in the country, where can it be if you are not here?" ”

"Isn't there a neighbor?"

"It's better to do applications next door, and my goal is condensed matter physics, so this is still the right place for me."

Condensed matter physics is one of the largest and most important sub-disciplines of physics today.

In China, people who don't know about it will think that it is an unpopular subject, but it is not.

In recent years, the popular superconducting materials, quantum computers, electric vehicle batteries, etc., all involve condensed matter physics.

Lu You has a certain understanding of this, but not much, after all, his main direction is number theory and algebraic geometry, and there is a large separation at the application level.

"Looks like you live in this dormitory building too?"

Su Xinghe bowed his head slightly and said, "I live in 512, what about you?" ”

"403 downstairs."

Su Xinghe was stunned for a while, and said in surprise: "Isn't that with hemorrhoids?" ”

"Indeed, we got in and out of bed, and he went up and down." Lu You said with a smile.

"It's a small world!"

Feeling that his back was getting stickier and stickier, Lu You hurriedly interrupted the conversation.

"I still have something to do, I'll go back to the dormitory first, and we'll talk when I'm free."

"Okay, go slowly."

"So are you."

Arrive at the dormitory door.

Lu You took out the key from his pocket, and as soon as he inserted it into the keyhole, the dormitory door was opened.

A cool breeze blew in his face, dispelling a bit of heat.

"Huh? Coming back? ”

While speaking, Zhang Zhichuang's gaze quickly moved down, landing on the shopping bag that Lu You was carrying, and immediately grinned.

"Come back, come back, why do you still bring gifts? See more! ”

Without waiting for Lu You to reply, Zhang Zhichuang snatched the shopping bag and turned around and returned to the dormitory.

"Lao Gong, Lao Bi, come here! Brother Lu brought us good things! ”

"Really? I'll get out of bed right away! ”

"Wait for me, the boss is still 10% short of blood!"

Lu You tugged at the corners of his mouth, then changed his shoes and walked into the dormitory, closing the door with his backhand.

Gong Qing leaned over to Zhang Zhichuang's side, probed his brain and urged: "Open it up and take a look, what's inside." ”

"Don't worry, you won't run away with long legs."

Zhang Zhichuang untied the bag and took out the contents one by one.

"Apples, grapes, bananas, and ...... What's this box? Oh, it's an egg tart! ”

Lu You put down his schoolbag, took off his sweat-soaked T-shirt, threw it into the laundry bucket, and changed into a dry short-sleeved shirt, and the whole person was like a new life.

Gong Qing looked back at Lu You and asked, "Great God, can we eat the egg tart?" ”

Lu You took a sip of the water cup and replied, "Eat!" It was meant to be brought to you! ”

"Thank you, father!"

Zhang Zhichuang couldn't wait to pick up a piece of egg tart that was still hot, and opened his mouth to bite off half of it.

A small clatter sounded.

Caught off guard, the crispy egg tart skin sprinkled Zhang Zhichuang's body.

"! Brother Lu, you are plotting against me! ”

"It's you who doesn't pay attention, who is to blame?" Lu You replied lightly.

With Zhang Zhichuang's previous experience, Gong Qing was obviously much more cautious, holding an egg tart in one hand and protecting it under his mouth with the other.

Lu You took out a tissue, wiped the sweat from his forehead, and watched the two swallow the egg tarts before asking, "How?" Is it tasty? ”

Zhang Zhichuang stuffed the remaining half of the egg tart into his mouth and replied vaguely: "It's delicious, the skin is very crispy." ”

Gong Qing had a thoughtful look on his face and asked, "Great God, where did you buy this egg tart?" ”

Lu You sat down at the desk, unzipped his schoolbag, took out his computer and put it on the table, and said, "I don't have to buy it, I made it myself." ”

Zhang Zhichuang's eyes widened, and he said in disbelief: "You can even make desserts?" Are you still an individual? ”

"Just adjust an egg tart crust and egg tart liquid, it's not difficult, there are detailed recipes and tutorials on the Internet, just follow it."

"You're not going to chase your girlfriend with this hand, are you?" Gong Qing asked.

Lu You lifted the computer screen, pressed the boot button, and said, "No, the egg tart is too low-end, I rely on a white chocolate chrysanthemum." ”

"What's that?" Zhang Zhichuang was puzzled.

"If you don't understand, forget it."

Lu You didn't bother to explain, adjusted his state and prepared to start studying.

At this time, Bi Yangde, who had just finished the game, hurriedly took off his headphones, got up and asked, "I killed the boss, where did you talk?" ”

Zhang Zhichuang took off the crumbs of the tart skin on his body little by little, and said, "Brother Lu brought the tart back, do you want to eat it?" ”

"Tarts? That's it. ”

Bi Yangde sat back in his chair and said, "The calories are too high, I won't eat it." ”

Zhang Zhichuang frowned and said, "It's just an egg tart, as for it?" ”

"As for!"

Bi Yangde said with a serious face: "Maintaining a good figure requires sufficient exercise and strict diet control. Now that school has started, the amount of exercise cannot be raised, so I can only start with diet. ”

"I really don't understand, just for the sake of a figure, I can't eat this and that, what's the fun in life?"

Hearing this, Lu You interjected: "Hemorrhoids, everyone has their own way of life. What seems to you to be meaningless may happen to be the favorite of others.

You understand best, if you don't understand, then respect, too much will only be unpleasant. ”

"Yes."

Zhang Zhichuang scratched his head, looked at the red and bright apples on the side, and asked, "You always eat the apples, right?" ”

"I'll eat it if you peel it." Bi Yangde smiled.

"Can't you eat it with the skin?"

"I can't."

"Damn!"

Zhang Zhichuang left the dormitory with an apple and fruit knife.

When he returned, the apple in his hand had been peeled off and divided into four petals.

"Eat the apple."

Zhang Zhichuang walked around the dormitory, gave each person a petal, and finally stopped behind Lu You, nibbling on an apple while looking at the paper on his computer screen, unconscious.

"Brother Lu, everyone is also a nine-year compulsory education, the same IMO gold medal, why can you be so good?"

Lu You's eyes were always staring at the paper, and he said without squinting: "It's good to be reincarnated, but the genes given by your parents are incomprehensible." ”

"Alas! How unjust the world is! ”

Zhang Zhichuang finished eating the apple and returned to his seat.

"Brother Lu, the apples you bought are really good, crisp and sweet, buy a few more catties next time."

"Wait for next week, buy more next week."

A few catties of apples are only a few dozen yuan, and for Lu You's pocket money, it is only a drop in the bucket.

"Actually, I prefer a powdery texture to a crisp apple."

Almost at the same time, Zhang Zhichuang and Gong Qing's sharp eyes focused on Bi Yangde, as if they wanted to pierce him.

"What, what's wrong? Why are you looking at me like that? Bi Yangde shuddered.

"Say! Where did you come out of heresy and actually like pink apples? Zhang Zhichuang asked sharply.

Gong Qing looked at Bi Yangde with novel eyes and said, "My family's pink apple dogs don't eat it, they are all used as gifts, I didn't expect anyone to like it." ”

"It's because you don't know the goods!"

Bi Yangde snorted coldly, didn't argue with the two, and turned to Lu You and asked, "Great God, the course selection system was opened yesterday, did you choose it?" ”

Lu You supported his cheek with his left hand, silently calculated the formula in his heart, and said casually: "I chose." ”

"What do you choose for your professional course? Experimental class or regular class? ”

Lu You patted his head, changed his sitting position and leaned back on the chair.

While thinking about the formula, I had to deal with the questions of the three little ones in the dormitory, which was really difficult.

"If I'm not mistaken, it's supposed to be an experimental class."

"So do we! Then we can take lessons together! Bi Yangde said happily.

"One thing to say, I don't understand it very well, what is the difference between this experimental class and the ordinary class?"

When Zhang Zhichuang chose a course, he simply saw the same course name, and some followed the suffix of an experimental class, so he chose it out of curiosity.

Lu You remembered the VX conversation with Professor Xiao Liang a few days earlier, and explained: "Professor Xiao said that the teaching content of the experimental class is the same as that of the ordinary class, and the difference is the teaching method.

The experimental class is for students with a good foundation, and the simple introductory knowledge will not be too much, and the teaching sequence and the depth, breadth and abstraction of the lectures will be higher. ”

Zhang Zhichuang chuckled in his heart, and said a little anxiously: "What about the exam?" Isn't it possible that the exam will be more difficult? ”

"I think too much, the exam papers are the same, otherwise how to rank grade points at the end of the term?"

"That's fine!" Zhang Zhichuang breathed a sigh of relief, "I'm afraid that the test paper will also double for me." ”

"No, you're a person with a perfect score, and you're still afraid of a little final exam?" Gong Qing said with a smile.

"Whether you are afraid or not and whether you want to or not are two different things, you can take a simple paper, who wants to waste your hard time to take a difficult test, and there is no benefit."

"That's right."

"By the way, God, what did you choose for physical education class? All three of us are badminton. ”

Lu You recorded his scattered thoughts and replied, "Tai Chi." ”

Zhang Zhichuang stood up violently and said in shock: "Tai Chi is a huge hit, we squatted on time, and we didn't even choose the campus network, how did you grab the extranet?" ”

"Maybe it's lucky, when I entered the course selection website, I just saw a vacant seat, and I chose it casually."

"It is estimated that someone withdrew from the election and then picked up the omission." Gong Qing guessed.

"Grass, what a dog!" Zhang Zhichuang said angrily.

"By the way, why do you want to choose Tai Chi?"

Zhang Zhichuang stood on his legs and posed in an extremely non-standard Tai Chi starting pose, and said, "Don't you think it's handsome to know how to use Tai Chi?" ”

"What about you, great god, why did you choose Tai Chi?" Gong Qing asked rhetorically.

Lu You smiled slightly and said, "Because Tai Chi is really handsome!" ”

(End of chapter)