Learning Demon Cultivation System

Fortunately, WeChat contacts are very reliable.

She is a big sister nicknamed "Ximig", who is studying for a master's degree at Ji University. Her head is a large regular crystal with a snowflake-shaped crack in the center, full of chemical beauty.

The eldest sister was also very enthusiastic, and quickly passed the friend verification, and sent Li Zheng the address of [College of Chemistry and Molecular Engineering, Jijing University], asking him how long it would take to arrive.

Li Zheng roughly estimated that it would take about 50 minutes, and played another 20 minutes to spare, and finally set it at 9:15.

After that, it was the subway journey, changing from Line [-] to Line [-], all the way to Jida East Gate.

In the middle, Li Zheng took out the experimental textbook and reviewed it a little bit, but the effect was still limited, so it was time to strengthen the memory.

The distance was smoother than that given by the map software. Before 9 o'clock, Li Zheng got out of the subway and was standing opposite the east gate of Jida.

Looking at the past, the east gate of Jida is not very big, just like an ordinary unit. At this time, only a small gate is opened, and there are not many people coming and going, so you need to show your ID to enter.

Look at the little crew heads who come in and out with their shoulders behind their backs.

Li Zheng knew that they were all big bosses.

If he had more time, he really wanted to sneak in and see the legendary Unknown Lake, but at this moment, he could only go south along the road.

There is no way, because the unknown lake occupies too much land, and the pool area is too large. Ji University College of Chemistry has already moved outside the campus, which is about 200 meters ahead of the roadside.

But just as Li Zheng was halfway there.

Suddenly stare.

Lifted an anus.

Damn... I didn't stop last night, I ate too much spicy stuff.

Why are you making trouble now.

He looked around eagerly.

Just right, there is a public toilet at the intersection.

Li Zheng didn't have time to think about it, so he forced the lock and ran in, rushing into the men's toilet.

Although this is a small public toilet, it also has two compartments, and the door on the outer one is wide open at this moment.

Li Zheng didn't have time to think, he quickly got in, closed the door, hung up his schoolbag, and put down his trousers.

Then, he let out a long sigh of relief.

saved.

For the rest, just take your time, there is no need to be so intense.

But as soon as he slowed down, there was a burst of cluck cluck next door.

The same grudge.

Li Zheng never thought that this was the same as yawning, and it was also contagious.

When the next door got excited, he also became fierce, overwhelming.

The two of them pushed each other up and down, and in just 2 minutes, they completed the 10-minute project.

It's also rare for Li Zheng to be so smooth. Thinking that the hero next door must be the same, it is inevitable that he will have some flirtations again.

It's a pity, now that everyone lives in a building and has an independent bathroom, I'm afraid they won't be able to enjoy this kind of pleasure anymore.

After expressing his feelings, he unzipped his schoolbag and took out a tissue.

Then there was a stare.

I clearly remember half of the package.

Why only one?

Think of the special situation of flying stars in the sky today.

This is a bit difficult to deal with.

no way.

Fold more times.

Better than nothing.

Just as Li Zheng was figuring out how to use this piece of paper, a slightly immature male voice with a changing voice suddenly came from next door.

"Are you here..."

Li Zheng was taken aback.

Is it the hero next door?

Still a teenage hero.

"Huh?" Li Zheng responded immediately.

The young hero paused for a moment, and asked with some embarrassment: "My...brother...do you have much paper..."

Li Zheng suddenly panicked, looked into the palm of his hand, the thin tissue that was only a little bigger than the palm of his hand, and replied stiffly, "I... only one..."

"Hey..." The young hero sighed deeply, "Walking and walking, suddenly jumped up...you too?"

Li Zheng felt the same way, and replied with a sigh: "Yes, this kind of thing is always unprepared."

"Just like love." There was also a sigh from the next door.

"..."

"..."

"Good... literary talent."

"Thank you, thank you, that... you... wipe it, leave me alone..."

Li Zheng looked at the only piece of paper in his hand, wondering: "Why don't I finish it soon and go out and buy some paper for you?"

"Don't... trouble you too much..." The young hero just gritted his teeth and clucked, "Leave me alone, I'll figure it out myself."

Li Zheng trembled all over.

Can't do it, hero.

Thinking of the fate of meeting each other, Li Zheng also gritted his teeth, making the same clucking sound.

"I'll tear it up in half and give it to you, so we both can save some use."

"Farewell...you are not enough..." the hero declined.

"It's okay, I'm good at math, and I can calculate the folding method for the maximum utilization rate." Li Zheng said, he took out the ruler from his schoolbag, folded the paper towel in half and picked up the ruler, ready to start cutting.

"Hey, I'm not bad at math." The hero next door seemed to be interested, "Brother, quickly tell me the length and width of the paper, and I will help you calculate."

"Oh? Interesting." Li Zheng thought of this, and was not in a hurry to cut it. He measured it first, "18X18 cm, the original folding method is 3X4, 12 grids."

The hero began to think about it: "Well... If the 12 grids can be fully utilized, 6 wipes per person are barely enough."

"Yes, but if you fold it in one pair, the number of times you can use it will be halved." Li Zheng frowned, "And you also need to consider your hands and buttocks. Don't touch them."

"So... this origami problem, I seem to have seen it before." The hero suddenly raised his voice, "I remembered, the solar panels of artificial satellites have to be folded and unfolded, there seems to be an algorithm, wait Let me check."

Li Zheng was more of a practicalist on this issue, and tried repeatedly with the paper in his hand.

Not long after, the hero knocked on the partition: "The length of the paper is L, and the thickness of the paper is t, then L=πt/6 multiplied by 2 to the nth power plus four, then multiplied by 2 to the nth power minus one, this n is The maximum number of origami, we almost do a log to figure it out.”

Li Zheng murmured: "It's wonderful, but this seems to be just a discussion of how many times the paper can be folded, right? We still need to discuss the area used each time and how to keep it from sticking."

"That's right...these solutions are not reliable. Has no one studied such an important mathematical problem?"

"I have a plan to save the country with curves." Li Zheng swallowed and said, "Put your fingers directly through the middle of the paper, and then use your fingers... After you're done, gather around, scratch, and wipe your fingers Clean it, throw it away, what do you think?"

"This... is also a way, but the loss is a bit big." After the hero finished speaking, he suddenly had a plan, "Brother, we can do this, rubbing at the edge, and then fold a small part of the rubbed off. Go in, change the edge, rub it again, roll the paper inward little by little, and finally turn it into a ball."

"Wonderful!" After Li Zheng praised, inspiration suddenly came, "I think it can be strengthened, and there is an angle α..."

"It can be done, but it can still be optimized. After calculating α, the diagonal line..."

"Hmm, interesting...but don't we have to leave at least a few square centimeters for the fingers to operate?"

"Oh, I forgot to think about it. After all, toilet paper usage is inversely proportional to finger poop usage..."

ten minutes later.

"Yes, that's it, it's ready to start!" Hero said, "In this way, each of us can use it 7 times without touching it."

"Well, I'll just draw an inscribed circle as an angle..." Li Zheng was about to pick up a pen, but felt something was wrong, knocked on the partition and said, "Brother...Since it's all so troublesome, I'll just draw this Wouldn’t it be better to fold a piece of paper in half horizontally and vertically twice and cut it into 16 small squares?”

"Ah!" The hero slapped his head, "Yes, it's fine to throw away with one cube each time, that's fine bro."

"Then I cut it?"

"Please." The hero sneered, "As soon as we discuss mathematics, we get stuck in it. Brothers are laughing at me."

Li Zheng also smiled and said, "Me too, you see my compass has been pulled out."

"Speaking of which...compass seems to be useful too..."

"It's... it's over, brother."

Because it took too long.

When the last two people used it.

It's basically done.

But this does not hinder the academic enthusiasm between them.

While rubbing vigorously, they greeted each other.

The hero asked earnestly: "Speaking of brother, you have a bad smell."

"Hey, I ate too much stinky tofu last night, I'm sorry."

"Damn it, no wonder." The hero then asked, "Brother, are you old? So strong."

"I'm only a sophomore in high school, just passing by."

"What a coincidence, I'm also a sophomore in high school." The hero suddenly remembered something, "It's Tuesday, don't you have classes in high school?"

"Class, I have something to do here."

"What a coincidence, I have something to do..." The hero's voice gradually trembled, "You don't go to...Ji Dahuayuan, do you?"

"Yes." Li Zheng exclaimed in shock, "You won't...also be Hua Jing?"

"Yes!" The hero was completely excited, "Did you contact Mr. Simig?"

"Yup."

"You...you can't be..." the hero said impatiently, "Li Zheng???"

"Fuck!" Li Zheng slammed on the door in shock, "Shi Yang???"

"That's okay?" The hero was overjoyed, "I've long thought I'd meet you!"

"Who isn't!" Li Zheng wiped it vigorously, "Stop talking, wipe it quickly."

On Li Zheng's side, he ran out of eight small pieces of paper and retreated. With his emotions brewing, he slowly pushed open the door of the private room.

Before the door was opened, a man's mournful voice came from outside.

"Two big brothers, please, hurry up!"

Li Zheng hurriedly opened the door, lowered his head and quickly flashed out.

He only felt a gust of wind whizzing past his ears, and the man rushed into the private room.

The door slammed shut with a "bang", and almost at the same time, there was a hearty sound from inside.

The hero next door sighed: "You are happy enough."

"Happy you..." The man swears back, gritting his teeth and cursing, "The... belt buckle is stuck."

This voice was not only angry, but also filled with endless sorrow and humiliation.

Li Zheng didn't dare to think too much, walked out with his backpack quickly, and washed his hands quickly.

The hero next door also rushed out with his pants in his hands, washing them side by side with Li Zheng: "Quickly withdraw quickly..."

"Yes...don't wait for him to come out..."