It's approaching the National Day holiday, but the school is surprisingly quiet.

Different from the ordinary three books, due to the pressure of schoolwork, Yun University students basically don't feel the joy of the holiday, and there is not much homework after class, but the grade point is a big mountain, and they can't turn it over when they are idle.

So what to do?

Work hard and study hard!

There are exceptions, such as Zuo Zhesheng, who is swaying all day, and Fang Xiaowu, who has not seen anyone for many days.

In the microeconomics class, the little fifth brother was full of classmates, and everyone was chatting with him during the break.

"Senior brother, what have you been busy with lately? ”

"Read!"

"I envy you, senior brother, if you don't come to class, you won't deduct the usual points, and I will cry and chirp as soon as I get on the high math ......"

"Be careful, you're a girl. ”

"Senior brother, when will the club organize activities? I am so sad that you don't come to the club once after putting such a large amount of money in the club!"

"Dora a few people to accompany you to grieve, anyway, don't count on me to organize activities, hehe!"

Fang Xiaowu replied with ease, occasionally serious and occasionally naughty, basically did not snub anyone, and the level of receiving people and things was obviously much higher than that of his peers.

That's right, the interpersonal brain area is indeed well developed, and the ability to flirt with girls is basically in this area.

After chatting for a while, he suddenly realized that something was wrong, looked left and right, and asked curiously: "What about the squad leader? I can't see those long legs, and I lack motivation in class......

"Hahahaha!"

The boys let out a burst of laughter, and they all squeezed their eyebrows and nodded their heads one after another.

Cheng Lingling, who was sleeping with her, said quickly: "You have no private contact with the squad leader?

"I'm shy......

Fang Xiaowu hugged aggrieved, causing another burst of laughter.

Li Xinran, a member of the literary and art committee, told the truth: "The squad leader has taken a leave of absence, and I haven't seen anyone for two days, and we still guess if you kidnapped the squad leader and went to the world of two!"

Fang Xiaowu spread his hands: "I have a thief's heart but not a thief's guts, and the girls who sleep with a beautiful woman will help me pass on a word: I am very good at crutches, begging for teasing, and waiting for me." ”

Amid the laughter, the professor came back, and the second half of the class officially began, and everyone dispersed.

The professor's surname is Zhou, and he has the same name as the empress of table tennis, and at the beginning of the second half of the class, he took out the roll call, which immediately caused a commotion.

What made Fang Xiaowu stunned was that there was a large PPT file on the back projection, which contained the enrollment photos of all the students...... Teacher, you are so ruthless!

One by one, he clicked on the names, and soon called Fang Xiaowu.

"Is Fang Xiaowu here?"

"Haha! Here we go!" Before Fang Xiaowu could respond, many classmates burst into laughter.

"Yo, rare guest...... Come stand up and recognize my face?" Zhou Yaping smiled and pushed his glasses.

Fang Xiaowu stood up helplessly and greeted: "Hello Teacher Zhou, I'm Fang Xiaowu." ”

Zhou Yaping looked back at the photo, and then sighed to the right person: "It's not quite photogenic, the real person is more handsome than the photo." ”

I'm getting handsome every day, are you making it?

I thought about it in my heart, and I didn't dare to say it, but I have taken two micro-scriptures since the beginning of school, and I can't get up......

"Little Wu, although Mr. Hong asked me not to deduct your usual points as much as possible, and to speak with the final grades, but you ignore me like this, the teacher's heart hurts......"

Zhou Yaping is quite kind and funny, but obedient and listening, Fang Xiaowu knows that he must not be so easy to pass.

Sure enough, Teacher Zhou stopped naming names, and the students behind him all gently let him go, and specially designed a test for him.

"Well, in the future, every time you come to class, I will ask a random question, if you can answer to my satisfaction, I will count you as full attendance for the rest of the class, otherwise you will go back to the office with me and work for a day. How's it going, don't you feel impressed?"

Don't dare to move......

"Thank you, Mr. Zhou. ”

"Good boy, just sit down and answer the questions. ”

The hypocritical Fang Xiaowu and the hypocritical Zhou Yaping, cut it open, their hearts are black, and finance is tireless, friends of the basin, if you want to learn finance from hooligans, believe me!

The master and apprentice looked at each other amicably, and the test began.

"What about our progress, just talked about the second chapter, the problem is very simple, you find an example, and describe to you the relationship between sinking cost, opportunity cost, and marginal cost. ”

Fang Xiaowu subconsciously glanced at the textbook, not the Mankun version, not the Fan Li'an version, but the Gao Hongye version.

Your sister, does the second chapter of Gao Hongye's version of the micro-scripture talk about the cost?!

Chapter 5 is about whether the cost is good or not!

The students watched the excitement happily, and when Mr. Zhou's topic came out, some people were already confused, and some people were flipping through the books until they reached the middle.

To put it simply, microeconomics is the study of the "economic behavior" of individual "economic units" in society.

"Micro" is a paraphrase of the Greek word "μικρο", which originally means "small", so this is a "small economics" and "individual economics".

This thing is part of the theoretical foundation for what Fang Xiaowu is going to do.

Whether it is finance, business, or even artificial intelligence, as long as it involves the operation of enterprises and market rules, it is impossible to avoid macro and micro knowledge.

If there are many postures, it is always the knowledge reserve that determines a person's height, so in his spare time, Fang Xiaowu briefly flipped through the freshman textbook - slightly is the point, which means that he has not finished it.

So he knew what was going on with these three major costs, but he didn't understand it to the extent that he could casually cite cases.

Your sister, isn't that embarrassing?

Since he got the system, the fifth brother scratched his head like this for the first time.

But can't you be cowardly, don't you see all the students waiting with anticipation?

As a senior brother in the Department of Finance, you can talk nonsense and can't admit defeat!

After pondering it head-on, the little fifth brother is especially looking forward to the mathematical space that has just been opened up can play a key role and make a perfect appearance.

It's a pity that as soon as you recall the messy formula, you will immediately return an answer or model, but it has nothing to do with these three major costs......

Heckling, this is not a math problem!

Zhou Yaping waited with a smile, not in a hurry at all, but the nearby classmates gradually became a little nervous, either turning the book into a loud noise, or holding their heads and muttering nonsense.

"This is the case...... In fact, it is very common around us......"

Babbling nonsense to delay time, Fang Xiaowu almost turned his brain into a drum washing machine, and his two eyes searched around quietly, looking for the so-called "common cases".

Suddenly, Fang Xiaowu glanced at Zuo Zhesheng Zuo Dashao.

This product has probably lost his mind to win with Fang Xiaowu recently, and seems to be a little dead to Han Xiyi, at most, he occasionally peeks at his long legs a few times, and shifts the real pursuit goal to Li Xinran, a member of the literary and artistic committee-

This girl is also a class flower level, and she can't be compared with Han Xiyi, and she definitely has the second or third ranking in the finance department when she comes out alone.

With Zuo Zhesheng, it is more than enough, and even a little blind.

Fang Xiaowu's eyes lit up, and a flash of inspiration flashed in his heart, and the case blurted out.

"To use the simplest, easy-to-understand, but perhaps a little bit inappropriate—"

Li Xinran fell in love with Zuo Zhesheng, and soon found out that Zuo Dashao was a scumbag, so he broke up. ”

"The time and energy that Li Xinran spent on Zuo Zhesheng is a sunk cost. ”

When Li Xinran got along with Zuo Zhesheng, he successively rejected the pursuit of Jingshan and Wang Pengcheng, which is the opportunity cost. ”

"Li happily returned to being single and came back to pursue me again, and the cost was the marginal cost. ”

The air in the classroom was quiet for a long time, and suddenly there was a burst of laughter.