In the end, Yun Rongshang still gave up coriander, ate a few pieces of beef, and paid more attention to vegetarian dishes.

And Li Mu didn't mean to be polite at all, after all, there are few opportunities to come out and go to the restaurant, and the price of this plate of coriander beef is more than fifty, which is enough for his day's meal, and the price of Shanghai is there after all.

Of course, Li Mu's unkindness also made Sun Ziping and Lin Yao like it more, after all, this is how they seem close.

That's it, after a meal, no one drinks, just drink a drink.

After eating, Sun Ziping settled the bill, and the four of them returned to school together.

Li Mu naturally went directly to her office with Sun Ziping.

Yun Rongshang was also very curious about what topic could make Sun Ziping study for four years without a result, so she also went along.

Once again, I came to the social science building and went to Sun Ziping's office.

Sun Ziping's office is quite large, and to Li Mu's surprise, after entering the office, what catches his eye is a portrait of a great man.

He looked at it a few more times, and his heart was in awe for a moment.

In the office, there were still a few graduate students of Sun Ziping still in the office, and they were all a little surprised to see the supervisor coming over so late, and of course they all shouted quickly.

It's just that after seeing Li Mu, who also followed, they were all stunned.

This is not ......

Today's math guru who used a mathematical model to make them to death?

Why did he follow Professor Sun?

Of course, without giving them time to ask, Sun Ziping asked them to continue doing their own things, while she picked up the laptop and a USB flash drive on the desk and took Li Mu to a small discussion room next to her.

There was no one in the small discussion room, and after entering it, Sun Ziping opened the laptop, inserted the USB flash drive, and finally opened a document.

"That's it, Xiao Li, look, I'll give you a brief explanation, you don't need to understand those economic terms, the main thing is this mathematical model problem."

Li Mu nodded, and then looked at it.

There is quite a lot of data in it, which belongs to the data of trade between countries, although it is not classified data, but it is obviously impossible to organize it so meticulously and comprehensively, without a certain amount of research and integration.

It involves various data such as the total trade volume of various currencies in the world, and clearly reveals the difference in the status of currencies.

Li Mu was amazed in his heart, and the computer in his mind began to run wildly, sorting out and classifying the data.

Sun Ziping explained the role of these data, and gradually told Li Mu what problem he wanted to solve with this mathematical modeling.

"The status of the hegemony of the dollar will not change in the short term, and our purpose is to seek progress in stability, we must know that the quality of the economy does not come from the total amount of currency, mainly from the circulation, so our purpose is to increase the circulation of RMB in international trade."

"This model calculates how to increase the liquidity while making a profit......

Li Mu understands these simple truths, and Sun Ziping does not use complicated words to describe them.

And Yun Rongshang next to him couldn't keep up a little.

Because there is so much of this data, and some of the data cannot be analyzed simply by putting it in data analysis software, to such an important extent, if you want to study it, you need to analyze it one by one.

And the most important thing is that the trade figures between these countries are very large, at least in hundreds of millions, although Yun Rongshang studied finance and is relatively sensitive to numbers, but his head is also a little unable to turn around.

And as Li Mu turned another page, she couldn't keep up at all.

She pouted, this feeling of being inferior to others was really uncomfortable.

Especially since this is obviously a financial problem, her professional ......

Time passed quickly, and Yun Rongshang gave up later, so she simply ran to the side and looked at her professional book.

And Li Mu is still understanding this problem through Sun Ziping's explanation.

The question is very long, after all, it involves the macro issue of national trade, and even the examination of the question requires patience.

And just like that, two hours passed.

They returned here at half past seven after eating, and when Li Mu completely understood what kind of model he needed to build, it was already half past nine.

"Is there anything else you don't understand about what I'm saying?"

Sun Ziping asked.

Li Mu shook his head and said, "It's basically gone." ”

"That's good." Sun Ziping was even more satisfied with Li Mu.

It took two hours to understand the question, which fully illustrated Li Mu's talent.

Everyone says that they should be sensitive to numbers when they study finance, because finance is about money, but Sun Ziping knows very well that some mathematicians and physicists are far more sensitive to numbers than they are when they study finance.

And Li Mu has already seen this kind of clue for the first time.

"Is there anything else you'd like to ask?"

Li Mu sighed with emotion: "It's too macroscopic." ”

Macroscopically, the I3-530 in his head couldn't turn around.

Sun Ziping smiled and asked, "This kind of question is like this. ”

When it comes to the national economy, no matter how macro it is, it can't be exaggerated.

"That's just as well."

Li Mu nodded.

"Are you sure?"

"Hmm......"

Li Mu fell into thought.

In fact, the computer in his mind is still working hard to deduce the problem.

All the knowledge he had learned over the years had been called upon by him, and all the memories that had never been forgotten as if they had been stored on a disk were read at this time.

If in reality, the computer needs to test the read speed of the disk to read the contents of the disk, then the disk in his mind has almost no upper limit to the reading speed.

In an instant, all the knowledge was passed through in his mind.

And the flexibility brought about by human wisdom allows him to make better use of this knowledge in his derivation.

Sun Ziping didn't bother him, she knew that the young man was thinking.

Maybe that's the case with anyone who studies mathematics.

Yun Rongsheng next to him also put down the book in his hand and looked at Li Mu.

Looking forward to his reply.

She could see the importance of this topic to her aunt, so she also hoped that this junior brother could help, of course, if Li Mu could really solve this problem, it would obviously be an opportunity for him to improve himself.

In this way, Li Mu thought for nearly three more minutes, and finally nodded.

"I'm sure."

Sun Ziping bowed her head and said with relief: "Good, good." ”

"Then I'll leave it to you, if you have any questions and needs, just tell me."

"Okay."

"Well, by the time it's done, you and I will both be the first co-authors." Sun Ziping said with a smile: "When the time comes, in alphabetical order, your name will still be in front of me." ”

Li Mu was surprised, and hurriedly waved his hand: "How can this work, you have studied it for so many years......"

"Hehe, four years of reactive power is far less than one month of merit." Sun Ziping waved her hand and interrupted Li Mu's words: "What's more, I am not researching this topic to ask for credit from the country, but I just don't want to see that the paper printed with our great men is not as high as the paper printed with other great people." ”

"So be it."

"You young people rest early."

Li Mu was silent for a moment, and finally nodded: "You also rest early." ”