After eating, when Ye Xiangdong wanted to pay, Gao Yuanyuan said angrily: "Hey! Eat with me, do you still need to invite? After that, he paid for the meal, which caused a strange look from the restaurant owner.

Ye Xiangdong was a little embarrassed, and faintly felt that Gao Yuanyuan was too good to herself, and this kind of goodness was not a day or two, it couldn't be some conspiracy, right? Or does she really see herself as a benefactor?

"That's the math problem." came to the hotel where she stayed with Gao Yuanyuan, and saw her take out a math homework book from her schoolbag, point to one of the math problems and say.

The hotel where Gao Yuanyuan stayed, very luxurious, is a five-star hotel, located near H University, with complete facilities, luxurious furniture, and full of unique European style.

In order to go to school, and live in this kind of hotel, generally only local tyrants consume, Ye Xiangdong is out of reach, although he still has more than 300,000 in his bank account, but according to Gao Yuanyuan, a night here, it will cost 5,000 up, but if it is an annual subscription, it is relatively cheap.

5,000 yuan a day, this kind of price, although Ye Xiangdong can afford it, he will definitely not spend it here, you must know that his money is for good deeds.

The ancients had a saying, and Ye Xiangdong recognized it very much.

If you are poor, you will be good to yourself and be responsible for helping the world.

When you stay in a luxurious five-star hotel, wearing pajamas worth thousands of dollars a piece, tasting hundreds of thousands of bottles worth of top-of-the-line romance. When Kande was wine-making, did you ever remember that in some places, people there even had a problem with food and clothing?

Of course, Ye Xiangdong's character is not so noble, it's just that he uses the money to eat, drink and live, he himself feels guilty of conscience, as for others, the money is earned by their hard work, and it should be enjoyed.

Glancing at the math problem that Gao Yuanyuan was referring to, Ye Xiangdong showed a smile on his face: "It's rare that you have the heart to learn, and I am naturally very happy to teach you." ”

Speaking, Ye Xiangdong recited the math problem: "Set up a factory to produce two kinds of products, A and B, the sales unit price is 100,000 yuan and 90,000 yuan respectively, if the total cost of producing X pieces A and Y pieces B is C = 400 + 2x + 3 y + 0.01 (3 x ^ 2 + X y + 3 y ^ 2) million yuan

The total production of the two products is known to be 100. The output of two products is obtained when obtaining the maximum profit. ”

"Don't read it, just by hearing you read this question, I already feel that one head and two are big, what X, Y, I don't understand." Gao Yuanyuan said in frustration, her small mouth pursed slightly, and she was about to cry, looking very cute.

"This problem, in fact, is very simple, conditional extremum, using the Lagrange multiplier method." Ye Xiangdong smiled, "The correct answer is: X=70, Y=30." ”

"How did you figure it out?" Gao Yuanyuan looked adoring.

Ye Xiangdong smiled slightly: "If I say that I calculated it by heart, do you believe it?" ”

"Liar!" Gao Yuanyuan obviously didn't believe it, "You don't need a formula, just calculate it by heart, ghost believe." ”

"Okay, I'm lying." Ye Xiangdong smiled bitterly and shook his head, when we can't change others, then we can only try to change ourselves.

Since Gao Yuanyuan doesn't believe it, there is no need for her to convince her, today's topic is how to teach her to solve this problem, not whether she can do mental arithmetic.

Gao Yuanyuan's mathematical foundation, Ye Xiangdong doesn't know if he doesn't teach, and he is shocked when he teaches it, it's not ordinary rotten.

Fortunately, Ye Xiangdong was eloquent, and finally taught her half an hour later.

In some things, Ye Xiangdong is also a stubborn person, Gao Yuanyuan has a poor foundation, it doesn't matter, I must teach you today, otherwise, I will not be able to sleep and eat.

"Now, right?" Ye Xiangdong wiped the cold sweat from his forehead and taught Gao Yuanyuan mathematics, which was even more tiring than seven in and seven out on the battlefield.

"Yes." Gao Yuanyuan was full of joy, biting her lip, with a sweet smile on her face, looking at Ye Xiangdong stupidly.

It can only be described as beautiful eyes and smiles.

Ye Xiangdong noticed Gao Yuanyuan's fiery gaze, his face felt a little hot, coughed, and said, "Then I'll go back." ”

"So early? It's only 7 o'clock. Gao Yuanyuan was obviously a little reluctant.

"It's not early." Ye Xiangdong said embarrassedly, and was about to turn around and leave, just when the mobile phone in his pocket rang, and when he picked it up, the caller ID was an unfamiliar number.

"Hello?" Ye Xiangdong said.

"To the east?" Gao Jincheng's hoarse voice came from the phone.

"Boss Gao? What are you looking for from me? Ye Xiangdong frowned slightly, although he had joined the Tianhe Association, he should only be a nominal one, what would happen if Gao Jincheng was looking for him? And I am a little excluded from the title of Xiangdong.

"Call me Uncle Gao." Gao Jincheng smiled, "I thought about it for a while, since you are already a member of our Tianhe Society, you should give you some real power, otherwise, it seems that I am too insincere, after all, you healed my daughter's legs, for this alone, I have to thank you very much." ”

"Didn't Uncle Gao already give me 300,000?" Ye Xiangdong asked curiously.

"My daughter's legs are only worth 300,000? You are asking for 1 million, as long as you can cure my daughter, I will satisfy you, this is what I owe you. Gao Jincheng said.

"What does Uncle Gao mean ......," Ye Xiangdong asked tentatively.

"Tianhe has opened a bar in H City, today is the first day of business, I want you to sit in charge, so that you have your own field, and the brothers in the gang will respect you, as for the profit of the bar, you take 30%, and the rest will be paid as membership dues."

After listening to Gao Jincheng's words, Ye Xiangdong was shocked, he didn't spend a penny, but he had a field? Obviously, this bar was built by Gao Jincheng, and as long as he sits in the bar, and the return is not a dead salary, but a direct profit dividend?

That is, are you one of the shareholders of that bar?

Gao Jincheng is fine, why do you want to embrace yourself so much? Pie in the sky?

"This ......" Ye Xiangdong fell into deep thought, Gao Jincheng gave him the impression that he had both male and talent, and he must have his purpose in giving this gift to himself.

"Don't worry, Uncle Gao doesn't mean anything else, he just wants to give you a birthday gift, happy birthday." Gao Jincheng smiled, "You're an orphan, aren't you?" If you don't mind, be my godson. ”

Ye Xiangdong's brain exploded with a "boom" in an instant.

A birthday present? Godson? Is it your birthday? How long has it been since you've had a birthday? How long has it been since no one said the 4 words "Happy Birthday" to themselves? So much so that his birthday has been forgotten.

Ye Xiangdong felt that a certain string in his heart was deeply plucked by Gao Jincheng.

Regardless of whether Gao Jincheng's words were true or not, Ye Xiangdong's mood at the moment was extremely moving.

"Thanks, I'll think about it." After saying these two words, Ye Xiangdong hung up the phone gently.

Within moments, I received a text message on my phone with the address of the bar.

Ye Xiangdong showed a strange expression on his face, glanced at the beautiful Gao Yuanyuan, and then smiled sincerely: "Do you know that a new bar has opened in H City?" ”

Gao Yuanyuan shook her head, the expression on her face was a little puzzled: "My dad called?" ”

"Well, he told me that there was a bar in H City that had just opened, so let me go." Ye Xiangdong smiled, and then said three words to Gao Yuanyuan, who didn't know why, "Thank you." ”

Maybe it's because of Gao Yuanyuan, so Gao Jincheng didn't hesitate to give himself this birthday gift, but the gift was too expensive.

Now Ye Xiangdong has to use 300,000 yuan of money every month for tasks, and the 3 ingredients of the bar are red, which is really necessary.

"Thank me for what?" Gao Yuanyuan looked like the second monk was confused.

"It's okay, are you okay later? Why don't we go to that bar together? ”

"Okay." Gao Yuanyuan immediately agreed.

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