Madam, protect me!

The Song Mansion is very close to the county government office, so Li Nuo can sleep a little longer in the morning.

When he woke up, the bedclothes had been tidied up and his wife was nowhere to be seen.

Li Nuo was used to this. After a simple wash, he went to the county government office with Wu Guanjia.

When he walked out of the Song Mansion gate, he once again passed by the gray-haired old man.

Mr. Chen came to the Song Mansion early today. He studied the question all night and had no clue. He felt a little regretful at this moment.

He really shouldn't have boasted in front of those old guys. If Li Nuo didn't know how to do it, he would lose face.

After passing through several corridors and moon gates, he came to a room. It was not time for class yet, and Song Muer and Song Ninger hadn't come yet.

After about two quarters of an hour, the two sisters walked into the room with their small bags.

"Hello, sir!"

After they greeted him, Mr. Chen pretended to be calm and asked, "Have you finished the homework I left for you yesterday?"

Unlike in the past, this time, the two sisters shook their heads at the same time.

Mr. Chen's heart skipped a beat. No way, that person also didn't know the answer to yesterday's question?

At this moment, he was filled with disappointment and relief.

He was disappointed that he couldn't continue to show off in front of the three old guys, and he was relieved because the young man didn't know everything. This allowed him, who had taught mathematics for a lifetime, to finally regain a little self-esteem.

However, for the sake of caution, he still planned to ask clearly.

He looked at the two and said, "Um, Mu'er... Which one of you is Mu'er?"

The two sisters not only looked exactly the same, but also had no difference in their clothes. Even after teaching them for two months, he couldn't tell who was who.

Song Muer stood up and said, "Sir, I'm Muer."

Mr. Chen looked at her and asked, "Doesn't your brother Li Nuo know the answer to the question in yesterday's homework?"

Song Muer shook her head and said, "Of course Brother Li Nuo knows the answer, but this question is too difficult. I don't understand what he said..."

Of course this question is difficult. The four old guys haven't figured it out together. What Mr. Chen didn't expect was that this question didn't stump Li Nuo, and it seemed that he gave the answer in a very short time.

Mr. Chen couldn't wait to ask, "How did he explain it?"

Song Muer didn't remember the mysterious process at all, so she handed over her booklet and said, "Yes, Brother Li Nuo wrote the solution here, you can read it yourself."

Mr. Chen carefully took the booklet, turned to the last page, and looked up.

One second.

Two seconds.

A quarter of an hour.

For a full quarter of an hour, he kept this posture, without moving or saying a word, like a wooden sculpture, only his eyes moved from time to time.

Song Muer and Song Ninger had already run out to play, they didn't have the patience to wait here.

After an unknown amount of time, Mr. Chen slowly put down the book in his hand.

I don't understand...

At this moment, he deeply understood Song Muer, not only she couldn't understand, but he couldn't understand it either.

Although he couldn't understand, his lifelong experience and intuition in studying mathematics told him that the seemingly random lines on the paper were definitely not drawn by Li Nuo casually, but he had not yet comprehended the mystery.

This Li Nuo is very likely to be a rare mathematical genius in the world.

It is said that a tiger father will have a dog son, but his mathematical talent is even better than his father Li Xuanjing.

At a certain moment, he suddenly remembered the handsome young man he met at the gate of the Song Mansion these two days.

Could it be that he is Li Nuo?

Mr. Chen walked out of the room and saw a little girl playing sepak takraw nearby. He asked, "Mu'er, when will your brother Li Nuo come back?"

Song Ning'er didn't answer him and ran away with a snort.

Song Mu'er jumped down from a swing and said, "Brother Li Nuo went out this morning and won't be back until dinner time. Sometimes he comes to my house and sometimes he goes back to his own house. I don't know if he will come today..."

Mr. Chen sighed and murmured, "It's probably too late in the afternoon..."

After teaching the two sisters and testing their basic mathematics, Mr. Chen didn't leave them homework today and left the Song Mansion in a hurry.

Qingfeng Academy.

A small building by the lake.

Three old men sat around a table, looking at the direction of the courtyard gate from time to time.

The three looked a little tired because they hadn't slept all night.

They were all masters of mathematics. They had been fighting for a lifetime. No one was willing to admit that they were not as good as Chen. They thought hard all night yesterday, but after a night, they still had no clue.

At a certain moment, footsteps were finally heard outside the courtyard gate.

Mr. Chen, holding a book, had just stepped into the courtyard when three eyes looked at him at the same time.

The three people's eyes made him feel guilty.

But he did not show any abnormality. He walked to them and said, "You look a little tired. Did you not sleep well last night?"

The three people did not sleep well, but did not sleep at all.

An old man waved his hand and said straight to the point, "Don't talk nonsense. Have you really figured out the solution to the problem yesterday?"

Mr. Chen glanced at him and said, "Of course, can I lie to you?"

He took out a piece of paper from the book and handed it to the old man.

The old man took the paper, and the other two immediately gathered around and looked over at the first time.

The paper was exactly the question, but on the basis of the original, there were a few more lines, which looked like something serious.

The blank space on the paper had the solution, but they couldn't understand it...

Unlike the clear-cut problem of drinking horses yesterday, the solution to this problem was written in detail, but they didn't know how to calculate several key steps.

An old man was about to ask, but Mr. Chen's heart skipped a beat and he immediately said: "No way, no way, you three are known as masters of mathematics, it's okay if you don't understand the solution, can't you even understand the solution?"

His words blocked the old man's words, and the other two temporarily suppressed the idea of ​​asking.

This sentence seemed to be understated, but it was too insulting.

In mathematics, they have studied hard all their lives, and looking at the entire Daxia, and even the countries on the continent, they are absolute masters.

Of course, mathematics is a broad and profound subject. They do not think they know everything, and there are many difficult problems that have not been solved so far.

But not being able to solve the problem is one thing, and it is another thing that others have solved it, but they can't even understand the solution...

Even if they really can't understand it, they won't ask the old guy directly.

Maybe they can figure it out after thinking about it.

An old man stared at the paper, memorized the content on the paper, and then said: "Mr. Chen, you underestimate me too much. Of course, I can understand the solution to this problem, but I suddenly remembered that there is another important thing. Let's talk about this problem tomorrow..."

After speaking, his eyes stayed on the paper for a while, and then he waved his sleeves and left.

Another old man also looked away from the paper and said, "I also remembered that I had an appointment with someone to go fishing today..."

The excuse he had just thought of was taken away by someone else. The last old man held his forehead and said, "I suddenly feel a little unwell. I will go back to rest first. See you tomorrow..."

Soon, Mr. Chen was the only one left in the courtyard.

"Heh, poor excuse." Mr. Chen looked at the three people scrambling to escape, with a look of disdain on his face.

After a while, he walked out of the academy, looked around, and made sure that no one was following him, and ran towards the Song Mansion again.