The main goal of mathematics is the public interest and the explanation of natural phenomena. —Fourier

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"Why did you insist on this room?" After stepping through the door and making rounds around, Suria asked puzzled.

After the two left the lord's mansion and continued to pretend to be a couple and returned to the hotel, Mu Yan pulled her around upstairs like a thief before finalizing the location.

Because she had accumulated too much curiosity this day, she was not in a hurry, and after entering the house, she deliberately checked around before asking.

Mu Yan closed the door and walked to the window. This is the right angle to see everything that happens in the vegetable shop across the street, "Healthy Sam".

"The Raiders are really sweet...... he muttered.

He has never been to Night Town, and he can only look at the strategy posts sent back by other players. At that time, there was a series of very interesting prestige tasks in the post, which aroused his great interest, so he remembered the place where the quest started, which was the vegetable shop downstairs.

"Hey, I'm asking you!"

Seeing his habitual distraction, Surya waved his hand dissatisfiedly.

"Oh, of course you say this house for a reason, you'll find out later." Mu Yan pretended to be mysterious.

"And what about today? Why pretend to be ...... Couple? ”

The girl's face was slightly red, and although she had a good time, she was still a little dissatisfied.

"The most jealous thing for women is nothing more than that the other party dresses better than me, looks more beautiful than me, has more money than me, and finds a good man, what do you say we don't pretend to be a couple? Sibling? I don't want to go to the German orthopedic ......."

But why make her jealous? And the passage you said in the Lord's Palace, what first encounter, dating frequent, did you mean to say that! And...... And how do you know I like to eat fried foie gras from 'House of Warriors'!? ”

"It's just a casual fabrication...... And it seems more natural in this way......" Seeing that the other party was approaching step by step, Mu Yan hurriedly changed the topic.

"Would you like to hear about my whole plan?"

"Of course."

He nodded in satisfaction. "Then you'll have to answer me a question."

Hearing this, the girl looked at him warily. "What's the problem?"

"Don't worry, it'......s just a math problem," he laughed, "One day, a little brother went to a vegetable vendor to buy green onions." 'How do you sell a pound of green onions?' The little brother asked. '10 copper coins a pound. The greengrocer replied. Then the little brother picked up a green onion and said to him, 'Otherwise, the green onion is white 8 copper coins a catty, and the green onion leaves are 2 copper coins a catty, a total of 10 copper coins a catty, is it okay?' The greengrocer thought about it and decided that it would be fine, so he agreed. In the end, the little brother spent 100 copper coins and left.

"Then may I ask Miss Surya, how much money did the vegetable seller lose?"

"What? Lost? How can you lose? The girl looked surprised.

“…… Think again? ”

"Two copper coins, eight copper coins, add up to 10, and the green onion and green onion leaves add up to a whole green onion...... "She said, and counted it with her fingers.

"Okay, okay......" Mu Yan couldn't stand it anymore, he glanced across the street, this scene in reality was about to happen.

"Now I'll take you to solve this problem, please open the window and jump with me."

"Oh...... Alas!? We don't really want to buy green onions, do we? ”

"Of course not, hurry up, it's too late."

"Oooh!"

……

In the "Healthy Sam" vegetable store, Sam is tugging at a young man's neckline.

"Boy! Say! Did you not have clean hands and feet yesterday? ”

"Nope! Which eye did you see me stealing? ”

"Fart! You only spent a silver coin, but I lost at least twenty pounds of fresh green onions! Dare to deny it! ”

"What's the matter with me? Didn't I just buy the green onion and green onion leaves separately? Is there a problem? The young man looked helpless.

"You ......," Sam said for a moment.

He instinctively felt that there was something wrong with this, but he just couldn't say it.

"Look, you must have made a mistake yourself, you have to be angry with me, if I really stole your green onions, will I come to you again to buy vegetables?"

"What? Do you still want to buy it? ”

"Of course, I came with sincerity, how can you treat customers like this?" The young man Nunu mouthed, signaling that the other party's actions were a little excessive.

Sam let go of his hand, his face darkened and he didn't say a word.

The young man threw out a silver coin and said with a smile: "Businessman, the customer is everything, always smile, come, and yesterday-"

There was a "bang", as if the sound of a heavy object falling on the ground came from outside the house, interrupting the young man.

This is followed by a whispered dialogue.

"Let it go...... Put me down, big sister! ”

"I won't sell it in the future!"

"I promise I won't ......"

The two hurried out and found that it was a man and a woman.

The man is white and thin, dressed as an aristocracy, and the woman is wearing a gorgeous dark red tight skirt, as if the figure has come out of the painting, and it is incredibly beautiful.

"Who are the two?" Sam asked.

"'Teacher Xia' who will help you answer your questions." Mu Yan smiled.

"Answering questions?" Sam was stunned for a moment, and then exclaimed, "Do you know who stole my more than ten catties of green onions?" ”

Mu Yan nodded and pointed at the young man.

"It was stolen by him, but it was just a means of righteousness and light."

"I knew there was something wrong with you!" Sam grabbed the other man's neckline again without saying a word.

"You talk nonsense!" The young man was stabbed in the foot and shouted excitedly: "You slander me!" Where did you come from, you strange person? And you, you just mess with customers, and slander me with strangers!! ”

Seeing this, Mu Yan said: "Young man, be quiet, it's still too late to admit your mistakes." ”

"I didn't make a mistake! I spent the money! And he agreed! ”

Hearing this, Sam let go of his hand.

"Summer ...... Mr. Xia, can you tell me what went wrong? ”

Hearing this long-lost title, Mu Yan couldn't help but smile on his face.

"It's very simple, if there is no distinction between green onion white and green onion leaves, green onion is green onion, you cut it into two sections in any proportion, and sell each paragraph by catty, will the price change?"

"Of course not, it's still 10 copper coins a catty!" Sam replied immediately.

"Isn't that the end of it? Aren't green onion leaves and green onion white? Why does the price change when it is cut down? Although a pound of green onion white and a pound of green onion leaves are not taken from two pounds of green onions, what is the difference between this and two pounds of green onions? Why only sell for a pound at a price? ”

After hearing this, two of the four people present fell into confusion.

The young man estimated that if he didn't run, he would have no chance, so he ran away while the two of them were deep in thought.

But he seemed to have forgotten that there were still people staring at him. At the moment when he raised his leg, the other party quietly stretched out a foot, and the young man who had just taken a step fell out of the ground with a huge momentum.

Sam was awakened by the movement of the two, and he threw down the question he hadn't figured out, strode forward, and tugged at the other's neckline again.

"Boy, I now know that you did it, I don't blame you, it was my stupid brain that gave you a chance, but don't let me see you fooling others with your cleverness in Nightlight Town in the future! Do you hear that? ”

"Listen...... Heard ......"

"Don't get out of here!"

"Then let go, big brother......"

Sam was slightly stunned, then let go of his hand, watched the other party get up, seemed a little puzzled, and raised his leg and kicked it.

"Get out of here!"

Here, Mu Yan tilted her head and looked at the girl with a dull gaze.

"You...... Haven't figured it out yet? ”

Surya shook her head aggrievedly.

"It's hard for you."

He sighed.

The guy who wrote the strategy seems to have said that the pastor and druid girl in his group can't figure out this problem, so he made a temporary cameo appearance as a math teacher, and it seems that he will not escape this disaster today.

"That's it, the 'Teacher Xia' lecture hall has started. Uncle Sam, do you have pen and paper? ”

"Yes!"

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It was late at night after the math class, the moon was hanging high, and there was no one on the cold street.

Mu Yan promised Sam to accompany him to the market tomorrow morning to buy goods, and then returned to the room with the suddenly cheerful female swordsman.

He was thinking about where to sleep at night, while the other party was still immersed in a sea of mathematics.

"Hey, don't think about it, wash and sleep."

"Huh!? What about the 'plan' you promised me? And why did you promise Uncle Sam to go to the market tomorrow morning? Isn't our mission to go to the outskirts of town to deal with the Resentful Flowers? The girl asked.

He slapped his head. "yes, for the sake of your amazing acting today, I'll reluctantly spoil it. But before that, are you sure you don't want to take a shower and change your clothes? Just now, when you jumped down with me in your arms, I seemed to hear the sound of the cloth tearing......"

Surya opened her mouth wide and touched the back of her ass in horror, then rushed into the bathroom with a red face.

Taking advantage of her turning, Mu Yan saw a crack in the tight skirt that originally wrapped her entire round buttocks......

……

When Surya dried her hair and walked out wrapped in her dressing gown, she found that she had forgotten that there were other people in the house.

It's getting more and more careless, she thought to herself.

But this time, Mu Yan still didn't see anything, because he couldn't hold on lying on the sofa and fell asleep.

He was so weak, and it was really hard for the past few days, especially since he hadn't slept well that night. Thinking of this, the girl's face couldn't help but blush twice.

She walked lightly, trying to wake him up, but stopped when she reached out.

Mu Yan shrunk into a ball because of the cold, his hair was messy, but he had a successful smile on his face.

Thinking of the other party's arrogant appearance in class just now, Surya was indignant.

"Smug fellow." She muttered quietly as she helped him straighten the shredded hair on his face.

As if feeling the itch, Mu Yan frowned a few times, turned over and fell into a deep sleep again, and made a few babbling noises in his mouth.

Surya was curious about what he had just said, so she leaned over to hear it.

“…… Silly ...... Heh......"

“……”

After a brief silence, Suria stood up with a cold face and once again had the whole bed to herself.

This time she also put the heavy sword on the other half.