universal data

Chapter 213 Tangency and Eatability Theorem
Tsinghua's campus is huge.

to what extent.For example, if you want to walk around the entire Tsinghua campus, one day is definitely not enough!
Fortunately, Cheng Nuo's dormitory was not too far from the freshman registration office.

On the way, Xu Lang introduced Cheng Nuo to the various buildings on the Tsinghua campus. After about ten minutes, he sent Cheng Nuo downstairs to the dormitory.

"Hey, this is your dormitory. It was just built this year. If there are no accidents, you will live here for four years. Of course, except for studying abroad." Xu Lang introduced to Cheng Nuo.

Cheng Nuo looked up.

The brand-new dormitory building has seven floors, and there are about twenty dormitories on each floor.

Seeing Xu Lang turn around to leave, Cheng Nuo said, "Senior, are you going up with me?"

"No." Xu Lang's footsteps paused, and he couldn't help but recall the tone of Cheng Nuo's words when he said "the seniors belong to the juniors." Chrysanthemum tightened inexplicably, sneered, waved to Cheng Nuo again and again, and walked in a hurry leave.

"Why did you run away?" Cheng Nuo was at a loss.

Carrying the suitcase, Cheng Nuo walked into the dormitory.

"203, this is it." On the second floor, Cheng Nuo walked to the door of dormitory 203 and gently opened the door.

There are already people in the dormitory.

Inside the door, outside the door, the four eyes meet.

The man stood up slowly and looked at Cheng Nuo blankly.

"Cheng Nuo?" The man said excitedly.

"Who are you?" It was still a familiar opening line.

"I'm Yuan Hua!"

At this time, a piece of sad music sounded.

Snowflakes fluttering~~
The north wind whistling~~
The world is boundless~~
"Sorry, I'm on the phone." Yuan Hua made an apologetic gesture to Cheng Nuo, and picked up the phone, "Hello, Mom, yes, I'm already at school....Well, all my roommates are here too....Mom , Guess who I saw? It’s Cheng Nuo! Big boss Cheng Nuo!! As I said, I adore him for being the No. !...Hmm, that's it, hang up."

Yuan Hua hung up the phone, looked at Cheng Nuo who was still standing outside the dormitory door, and said to Cheng Nuo embarrassedly, "Come on, Cheng Nuo, please come in, please!"

Cheng Nuo walked into the dormitory with a suitcase, and took a look at the environment in the dormitory.

Standard quadruple room, upper bed and lower table.There is a balcony, bathroom and central air conditioning.

Since it is a newly built dormitory building, the beds and desks are brand new.

Overall, not bad!

"Cheng Nuo, is it really you?" Until now, Yuan Hua still did not believe that Cheng Nuo had appeared in front of him so clearly.

Moreover, he is also his roommate.

In this way, he was one step closer to becoming Cheng Nuo's man.

After all, those who are close to the water first get the moon!

Cheng Nuo smiled while taking his things out of the suitcase, "What else?"

"I heard that you were admitted by our Tsinghua University. I thought you would go back to the Department of Mathematics, but you came to the Department of Finance before you came!" Yuan Hua sat on his stool, first sighed, and then became puzzled He asked, "By the way, Cheng Nuo, I heard that your mathematics in the college entrance examination is the only perfect score in the country. Why don't you go to the mathematics department?"

"My sister... doesn't have an academic atmosphere." Well, Cheng Nuo almost slipped the tongue.

"No academic atmosphere?" Yuan Hua scratched his head in confusion.

As far as he knew, Tsinghua's Department of Mathematics was one of the departments with the most academic atmosphere.

"Ahem!" Cheng Nuo coughed dryly and changed the subject, "By the way, where are the two of them, haven't they come yet?"

Of course Cheng Nuo was talking about their other two roommates.

"Oh, this." Yuan Hua said, "The two of them have come here a long time ago, and now they are going to the school store to buy thermos bottles, washbasins and so on. By the way, Cheng Nuo, did you bring these things? No If so, I'll ask them to bring a set back to you. Judging by the time, they should have just arrived at the mall now."

"Bring me a set."

…………

Two 10 minutes later...

Cheng Nuo's other two roommates walked into the dormitory with a lot of things.

"Sister, there are so many things, I'm exhausted!" A chubby boy who weighed at least 250 catties put a lot of things on the ground, and then sat down on the stool, panting.

"It's okay." The other is a boy with brown-black skin, slightly curly black hair, and bulging biceps to show his strength.

"This school is too big. The nearest shopping mall to our dormitory is more than ten minutes' walk away." The little fat man still complained, "If I had known, I wouldn't have come to Tsinghua University! It's so fucking cheating on you!"

"Okay, okay. Let's stop talking. Since everyone in our dormitory is here, let's get to know each other first." Yuan Hua clapped his hands to attract the attention of the other three.

"I'll come first." Yuan Hua was the first to introduce himself, "Yuan Hua is from Eastern Guangdong Province."

"Zhong Dun, from Hu Jiansheng." The little fat man took out a bag of potato chips and looked at Yuan Hua while eating.

"Cheng Nuo, from Dongshan Province." Cheng Nuo introduced himself with a smile.

Finally, the boy with brown and black skin said, "I am from XJ, a Uyghur, and my name is Maimadi-Naranse Bustaijir Nur Amqi!"

Cheng Nuo and the others: "???"

Brother, are you sure you are talking about your name?

"Uh... what is that? Can you say it again?" Cheng Nuo spoke slowly.

"I know you can't remember. To be honest, my name is quite long among us Uyghurs. Just call me McGrady." McGrady shrugged and said with a smile.

"Then we'll call you Maddie from now on!" The three of them said in unison.

"Come on, eat potato chips, eat potato chips." Fatty Zhong Dun handed the potato chips to the others.

The other three grabbed a handful each. When he took the potato chips back, his hand shook accidentally, and one potato chip fell to the ground.

The little fat man was stunned. Just when he was about to throw the potato chips that fell on the ground into the trash can, he was stopped by Cheng Nuo.

"Why didn't you eat it?" Cheng Nuo asked, pointing at the potato chips in the little fat man's hand.

The little fat man looked confused, "It fell to the ground, it's dirty!"

Cheng Nuo was serious, "Who said that, if the potato chips fall on the floor, they are dirty."

"Isn't that so?" The little fat man continued to be confused.

Cheng Nuo shook his head and smiled faintly, "Then let me ask you, is the shape of potato chips a curved surface?"

The little fat man was pretty good at math, otherwise he wouldn't have been admitted to Tsinghua University. He nodded, "Yes."

"The ground, is it a flat surface?" Cheng Nuo continued to ask.

The little fat man continued to nod.

"A curved surface, in contact with a plane, is it in tangential contact?"

"Tangent contact means that two surfaces actually only intersect on a line. And the area of ​​a line on a two-dimensional plane is equal to zero. Right?"

"Is a potato chip dirty when it falls on the ground? It's dirty, how much is it dirty, and a line is dirty, what is the area of ​​a line? It's equal to zero! So, he's not dirty!"

"Even if it's upside down, or inserted upright on the ground, it's the same. It only intersects with a line, and the area is zero!"

Cheng Nuo shrugged and came to the final conclusion, "So, for potato chips, which have a curved surface, no matter how you drop them on the ground, they won't get dirty. Pick them up, and they're still edible."

"I call this theorem... the tangency and eatability theorem!"

The little fat man held the piece of potato chips that fell on the ground, and stared at Cheng Nuo blankly.

I don't read much, so don't lie to me!
(End of this chapter)