Tsinghua's campus is huge.

How big it is. For example, if you want to walk around the entire Tsinghua campus, one day is definitely not enough!

Fortunately, the location of Cheng Nuo's dormitory is not far from the registration office for new students.

Xu Lang introduced the buildings on the Tsinghua campus to Cheng Nuo on the road, and after about ten minutes, he sent Cheng Nuo to the downstairs of the dormitory.

"Oh, this is your dormitory building, it was just built this year, if nothing else, you will live here for four years. Except, of course, studying abroad. Xu Lang introduced to Cheng Nuo.

Cheng Nuo glanced up.

The brand new dormitory building has seven floors, and there are about 20 dormitories on each floor.

Seeing Xu Lang turn around and want to leave, Cheng Nuo opened his mouth and said, "Senior, don't you go up with me?"

"Nope. Xu Lang's footsteps paused, and he couldn't help recalling the tone of Cheng Nuo's words just now, "Seniors are all juniors", Chrysanthemum inexplicably tightened, sneered, waved his hand to Cheng Nuo, and left in a hurry.

"Why did you run away?" Cheng Nuo was confused.

Carrying his suitcase, Cheng Nuo walked into the dormitory building.

"203, this is it. On the second floor, Cheng Nuo walked to the door of dormitory No. 203 and gently pushed the door open.

There are already people in the dormitory.

Inside the door, outside the door, eyes facing each other.

The man got up slowly, looking at Cheng Nuo with a stunned gaze.

"Cheng Nuo?" the man's tone was agitated.

"Who are you?" is still the familiar opening line.

"I'm Yuan Hua!"

At this moment, a mournful music sounded.

Snowflakes fluttering~~

The north wind is howling~~

The world is vast~~

"Excuse me, I'm calling. Yuan Hua made an apologetic gesture to Cheng Nuo and picked up the phone, "Hey, Mom, yes, I'm already at school." ...... Well, the roommates have also arrived. ...... Mom, guess who I saw? It's Cheng Nuo! Cheng Nuo's boss! I said it, I admire him super much for this year's college entrance examination! I didn't tell you that I aspire to be Cheng Nuo's man...... Uh-huh, that's it, hang. ”

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, Cheng Nuo, please come in, please you!"

Cheng Nuo walked into the dormitory with his suitcase and looked at the environment in the dormitory.

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

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

Overall, not bad!

"Cheng Nuo, is it really you?" Until now, Yuan Hua still didn't believe that Cheng Nuo appeared in front of him so really.

Moreover, he is also his roommate.

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

After all, the building near the water gets the moon first!

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

"I heard a long time ago that you were admitted to our Tsinghua University, I thought you went back to the Department of Mathematics, but you didn't come to the Department of Finance first!" Yuan Hua sat on his stool, first sighed, and then asked suspiciously, "By the way, Cheng Nuo, I heard that your college entrance examination mathematics is the only perfect score in the country, why don't you go to the Department of Mathematics?"

"Sister...... There is no academic atmosphere. "Well, Cheng Nuo almost said something out of his mouth.

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

As far as he knows, the Department of Mathematics at Tsinghua University is one of the departments with the most academic atmosphere.

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

Cheng Nuo was talking about their other two roommates, of course.

"Oh, this one. Yuan Hua spoke, "The two of them have been here a long time ago, and now they go to the school store to buy some thermos, basins or something." By the way, Cheng Nuo, did you bring these things, if not, I asked them to bring a set back to you. If you count the time, they should have just arrived at the mall by now. ”

"Bring me a set. ”

............

Twenty 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 tired of the fat man!" A chubby boy who weighed at least two hundred and fifty pounds put a lot of things on the ground, and then sat on the stool, panting.

"It's okay. The other was a brownish-black boy with slightly curly black hair and bulging biceps to show his strength.

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

"Alright, alright. Let's not talk about it yet. Now that all the people in our dormitory have arrived, let's get to know each other first. Yuan Hua clapped his palms, attracting the attention of the other three.

"I'll come first. Yuan Hua was the first to introduce himself, "Yuan Hua, from Dongyue Province. ”

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

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

Finally, the brown-skinned boy spoke, "I'm from Xinjiang, Uyghur, and my name is Maimadi-Naransebusti Gil Nur Amuqi!"

Cheng Nuo: "???"

Big brother, are you sure that you are talking about the name?

"Uh...... What is that? Can you, say it again?" Cheng Nuo said slowly.

"I know you can't remember. To be honest, my name is considered a long time for us Uyghurs. Just call me Maddie. Maddie shrugged and smiled.

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

"Come, eat potato chips, eat potato chips. The little fat man Zhong Dun handed the potato chips to several other people.

The other three grabbed a handful each, and when he brought the chips back, his hand shook and one fell to the ground.

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

"Why didn't you eat it?" Cheng Nuo asked, pointing to 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 to the ground, they will be dirty." ”

"Isn't that so?" the little fat man continued to bewilder.

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

The little fat man's math is still good, otherwise he won't be admitted to Tsinghua University, he nodded, "Yes." ”

"Is the ground a plane?" Cheng Nuo continued to ask.

The little fat man continued to nod.

"Is an arc in contact with a plane tangent contact?"

"Tangent contact means that the two faces actually only intersect in one line. Whereas, the area of a line is equal to zero in a two-dimensional plane. Isn't that right?"

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

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

Cheng Nuo shrugged his shoulders and made a final conclusion, "Therefore, for potato chips, which are curved, no matter how they fall to the ground, they will not be dirty." Pick it up and still eat it. ”

"I call this theorem ...... Tangent edible theorem!"

The little fat man took the potato chips that fell to the ground and looked at Cheng Nuo in a daze.

I don't read much, don't lie to me!