Madam, protect me!

Song Jiaren knew all these four old men.

They had all taught her mathematics.

In fact, only Mr. Chen taught her at the beginning, but later Mr. Chen said that she had no talent for mathematics and asked her family to find someone else.

In order to prove that they were better than Mr. Chen, the other three offered to teach her mathematics without even asking for tuition...

But later they all proved to be failures.

After being told that she had no talent for mathematics by the four most powerful mathematicians in Daxia, she devoted herself to martial arts and stopped studying mathematics.

Until she met him... she realized that mathematics was not that difficult.

For Li Nuo, it was the same to talk to one old man or to talk to four old men.

It must be said that these three old men were very intelligent, just like Mr. Chen, and it was easy to teach them.

After talking to them for about half an hour, Li Nuo did not plan to continue.

First, he did not want to waste more time, and second, if he talked too much, they would not be able to digest it.

Li Nuo bowed to the four people and said, "I have other things to do today. I will discuss with you gentlemen another day."

"We are not talented enough to discuss."

"Thank you for your teaching, Mr. Li."

"We will not disturb you today. I will ask you for advice another day."

...

These four old men were really more humble than each other. They bowed to Li Nuo as a disciple and left together.

Song Jiaren stood at the door. When the four people walked past her, she nodded slightly: "Sir."

The four people looked at Song Jiaren, and some relatively old memories emerged in their minds.

"Isn't this the little girl from the Song family?"

"She has grown up so big in a blink of an eye."

"Yes, the last time I saw her was more than ten years ago..."

"We are old..."

After the four old men left, Li Nuo stepped forward and asked, "Does my wife know them too?"

Song Jiaren lowered her head and said, "They taught me math before."

Li Nuo was stunned: "They all taught?"

Song Jiaren nodded and said, "They all said that I didn't have much talent for math, and then they stopped teaching me..."

If you can't teach yourself, you say that others have no talent. Li Nuo looked at the direction where the four old men left with displeasure, turned around and comforted her, "What do those old men know about math? You don't have to take what they say to heart. If you want to learn math, I will teach you. When you learn it, even those old men will call you sir..."

Li Nuo was not talking nonsense. Although my wife did not have a high talent in math, as long as she could finish high school math, it would not be a problem for her to teach those old men.

Functions, sequences, conic sections, space geometry, probability and statistics, just throw one out, can open up a new field of mathematics in Daxia, enough for these old men to study for the rest of their lives.

Using these is considered bullying them, and the slightly more difficult elementary school math problems are enough to make them drink a pot.

Li Nuo finally understood why his wife had no interest in learning since childhood.

If he had been hit in the face of self-confidence like this since childhood, he would not like to study.

For children, a good enlightenment teacher is very important.

These old men know mathematics very well, but they don’t know how to teach at all.

The excellent mathematics students taught by their method are not because they teach well, but because they have mathematical talents.

In order to help his wife regain her confidence, Li Nuo specially picked a sixth-grade elementary school math problem to teach her after taking a bath and before going to bed at night.

This is a modern application problem, but with a different description, it can be transformed into an ancient military problem similar to the first two "General Drinking Horses" or "Hu Bugui".

The question is very short, only two or three lines, but the solution is very tricky.

Even though it was just a sixth-grade question, it was no problem for a bunch of middle school and college students to be stumped.

Even if Li Nuo took off all the confusing coats of this question, got to the point directly, and explained it in a simple way, it took her half an hour to completely understand it.

He was so thirsty after talking that he picked up the teapot and gulped it down, and then he felt less thirsty.

Putting down the teapot, he said to Song Jiaren: "This question is simple, right? You who don't have a talent for mathematics understand it. Tomorrow those old men will come again. You can ask them this question and see if they have talent..."

Song Jiaren felt that there was no clue about this question at first, but after Li Nuo explained it to her, she felt it was quite simple.

Several gentlemen are known as the masters of mathematics in Daxia. This kind of question should not be difficult for them...

While she was thinking about this, Li Nuo was already adjusting the pillow on the bed.

I don't know why I got a stiff neck yesterday, and his neck still hurts now.

This body is so fragile that he would twist his neck when sleeping. He could not envy a physique like his wife.

A warrior is like a soldier, and his physical strength will increase with the improvement of strength.

A legalist is more like a magician. Even if he reaches a high level, he cannot change the fact that he is fragile.

With his wife by his side, Li Nuo always sleeps soundly.

After getting up in the morning, washing and having breakfast, he went to the county government office again and tried to deal with a few disputes among the people. He still did not feel any signs of an increase in his lifespan.

It seems that he has to care about Song Yu when he goes back at night.

At this time, Song Mansion.

Four gray-haired old men stepped into the small courtyard yesterday side by side.

Seeing Song Jiaren practicing sword in the courtyard, the old man surnamed Lu nodded and said: "I have said before that she is not suitable for mathematics. Now it seems that I have foresight, otherwise it would be a waste of a good martial arts talent..."

"You should have some shame, it was obviously me who said it first."

"You all should have some shame, I was the first to teach her."

Mr. Chen looked at a few people with contempt, walked up slowly, and asked with a smile: "Song girl, is your husband at home?"

Song Jiaren put away her sword and said lightly: "He went out."

Mr. Chen Mr. Chen sat at the stone table in the courtyard and said, "It's okay, we'll wait for him here."

Song Jiaren looked at the four people sitting there chatting, thought for a while, walked into the room, took out a piece of paper, walked to their side, and said, "I don't know how to answer a question, can you gentlemen explain it to me?"

Mr. Chen took the paper and smiled, "Of course, I'll see what the question is..."

For a moment, he was also puzzled, her husband was so knowledgeable in mathematics, why didn't she ask him, but he was soon attracted by the interesting question on the paper.

This is another new question he has never seen before, except for "Nine Numbers".

Mr. Chen immediately became interested, and soon, the heads of the other three also came over.

...

Li Nuo came back at lunch time. He was busy all morning in vain, and he didn't add half a day's life. He could only leave the county government disappointed.

However, he didn't gain nothing in this half morning.

I don't know when the code has evolved.

At first, Li Nuo needed to put the prisoners in jail so that the code could lock them.

I don't know if it was because of the immediate entry, but this morning, when he was investigating a theft case, several suspects had just been brought to court, and the portrait of the thief automatically appeared on the code.

Li Nuo had done an experiment. As long as the criminal was within ten feet of him, the portrait would appear on the code. If the distance exceeded ten feet, the portrait that had already appeared would automatically disappear.

The evolved "Code" will undoubtedly make it easier for him to judge cases in the future, and he no longer needs to find reasons to put everyone in jail first.

The ten feet around him are all jails.

Unfortunately, this powerful detection ability has not only distance restrictions, but also time restrictions.

There was also a case in the morning where a servant stole the property of the master. After the theft, the servant was locked up in the woodshed by the master and starved for three days before being sent to the county government.

At that time in the court, the code did not change at all.

His portrait did not appear on the code until Li Nuo pronounced the verdict.

The first theft case happened eight hours ago.

The second one happened three days ago.

Li Nuo combined the time of the two cases and speculated that the automatic detection of the code has a time limit, which is greater than eight hours and less than three days, and it is very likely to be one day.

As long as the case occurs within the time limit, when the criminal appears within a ten-foot range of Li Nuo, the code can directly lock him.

But if the case is too long, the code cannot give him a direct prompt.

This also means that in the future, when investigating a case, it is best to rush to the scene as soon as possible.

Once the time limit is exceeded, it will take a lot of trouble to solve the case.

…

Back to the Song Mansion, just stepped into the small courtyard of the two people, I saw Mr. Chen and others sitting at the stone table, looking at a piece of paper on the table, frowning, motionless.

Li Nuo looked at Song Jiaren standing in the yard and asked, "When did they come?"

Song Jiaren said, "Two hours ago."

These four gentlemen have been sitting there for two hours, occasionally moving and writing a few strokes on the paper, proving that they are not statues.

An hour ago, when she went to teach Muer swordsmanship, they were in this position. When she came back an hour later, they were still in this position.

Li Nuo went over to take a look. The four people were immersed in their own world and did not notice Li Nuo.

Li Nuo took a look and came back. He and his wife finished lunch and asked the Song family maid to ask Mr. Chen if they wanted to eat something.

The little maid just walked over and was impatiently waved away by them before she opened her mouth.

In the afternoon, Li Nuo did not go to the county government. He read books for an hour. He and his wife were pulled by Muer to jump rubber band for a while. Li Nuo was not as agile as them, and most of the time he played the role of standing still.

When it was almost time for dinner, Li Nuo returned to the yard. The four people still maintained the posture when he left.

I have to admire them. They really can sit still.

Li Nuo turned to look at Song Jiaren beside him and said, "Look, my lady, you understand the problem, but the four of them sat there and thought about it for a whole day, but they didn't come up with a solution. I said they don't understand mathematics, right?"

...

In Song Jiaren's eyes, the mathematics teachers have always been like mountains.

She thinks that people who can learn mathematics are very powerful, not to mention the teachers who teach mathematics.

Until today.

In her heart, the teachers have fallen from the altar of mathematics.

"Almost, I almost figured it out!"

"No, no, this is not the best allocation, there must be a better way!"

"Ah, my head hurts..."

"My waist hurts..."

...

Looking at the teachers sitting there, frowning and scratching their heads, Song Jiaren felt for the first time that they didn't seem to be that powerful.

When the sky darkened, several people at the stone table finally stood up and thumped their waists and shoulders with great effort.

The four of them sat in the yard all day, thinking about the answer to this question.

This question seems to be very simple, it seems that the answer is right in front of them, separated from them by only a layer of tulle, but even this layer of tulle cannot be lifted.

They came here today because they actually wanted to listen to the class, but they were delayed for a whole day by this problem.

If I don't get the answer, I'm afraid I won't be able to sleep well tonight.

Mr. Chen took this piece of paper, walked up to Li Nuo, and said, "Mr. Xiao Li, this question..."

Li Nuo shrugged and said simply: "I don't know how to..."

Last night, Li Nuo heard his wife mention a few things from the past.

Each of these old men was responsible for damaging her confidence in learning when she was a child. Li Nuo had to speak out for her.

After they left, Li Nuo said to Song Jiaren: "I will teach you a math problem later. If they come back tomorrow, you can continue to ask them. Why don't others have a talent for math? If they have talent, they can solve it by themselves." ah……"

Of course Song Jiaren knew who Li Nuo meant by "others". Seeing the four gentlemen being stumped by their own problems really gave her an inexplicable feeling.

Growing up, everyone in the family, including herself, thought she was not suitable for studying.

Only he told her that not all women must know music, chess, calligraphy and painting, and only he would use this method to prove that she was not stupid and couldn't learn arithmetic...

A faint smile appeared on her face unconsciously.

Chen, Lu, Xu and Wei were very happy at first to get to know such a young master of mathematics and to be exposed to a new field of mathematics, but they soon stopped laughing.

Every day when Song Jiaren sees them, she will ask them a question, a question that they cannot answer.

So now they are scared when they see her.

At this time, the four people also realized that the girl did not want to ask herself questions at all.

My husband's arithmetic skills were far inferior to those of the four of them put together. If I had any questions, I couldn't ask my husband who slept with me every day, but I had to ask them?

This was intentional on their part.

More than ten years ago, the four of them, in order to see who was stronger, took turns teaching her arithmetic, but ultimately failed, and they all concluded that she was incompetent in arithmetic.

But the truth is, it may just be that they don’t know how to teach.

If she had been taught by someone like her husband at that time, her achievements in arithmetic would probably be even higher than what they are now.

Mr. Chen had long been aware of this matter. He walked up to Song Jiaren, bowed to her and said, "I once made an arrogant assertion and misled others. I am here to apologize to you..."

He started, and the other three followed.

"It was us old men who were wrong."

"I take back what I said back then..."

"I hope you can forgive us..."

…

For the gentlemen of the academy, admitting that they had "mistaken others" showed that they were truly apologetic. Faced with this situation, Song Jiaren didn't know how to deal with it.

Li Nuo came over and said with a smile: "Oh, it's all in the past. Why do these gentlemen still mention it..."

Several people looked at him silently.

You don't need to think about it to know that those difficult questions were given to the little girl of the Song family in order to give her the spirit of the past...

This arithmetic master who suddenly emerged was not only young, but also short-sighted.

But he had to admit that he really loved his wife.

Among the four, Mr. Chen is the most familiar with Li Nuo.

After apologizing to the little girl from the Song family, he finally shamelessly asked Li Nuo with a piece of paper: "Mr. Xiao Li, look at these questions..."

Li Nuo saw Song Yu walking into the courtyard, so he said to Song Jiaren: "Madam, you can teach some gentlemen how to solve those questions."

Song Jiaren was slightly startled.

she?

Can she teach a few gentlemen?

At this time, Li Nuo had already walked to the door of the small courtyard. Song Yu held two small wine jars in his hands, handed them to Li Nuo, and said: "This is the kind of fruit wine you said you liked to drink last time. I will give it to you again." I did two forums..."

Li Nuo was not polite. After taking the wine jar, he asked: "How have you been at the academy these past few days? Is there anyone else who has troubled you? If so, please tell me."

Song Yu smiled and said, "It really doesn't happen this time."

Not only did no one trouble him, after Pei Jun returned, what happened in the county government that day spread throughout the academy. Now in the entire academy, who doesn't know that he has a powerful brother-in-law?

Not only did no one dare to cause trouble for him, no one even dared to fight outside the academy.

Li Nuo felt a little regretful when he heard this. It seemed that the matter of fishing, catching and fighting would be out of the question in the short term.

He couldn't encourage Song Yu to take the initiative to stir up trouble. There were many Legalists who wanted to take a shortcut like this, but the facts proved that this road would not work.

It's one thing to be forced to accept it, but it's another thing to actively stir up trouble.

Sometimes being too impatient can be counterproductive.

Song Yu looked at the two small jars of fruit wine and told Li Nuo: "Zhao Meng said these are the last two jars. If you steal them again, you will be discovered by your family. Drink slowly, it will be gone after you finish it..."

After finishing speaking, he was about to leave when his footsteps suddenly stopped as if he had discovered something.

He rubbed his eyes and thought he must be dazzled.

How could several mathematics masters from Qingfeng Academy appear in the Song family, and they were sitting at the stone table attentively, looking like they were listening carefully. What was even more incredible was that the one who was explaining to them was actually Jiaren...

What was she talking about, martial arts?

Song Jiaren explained it to the four gentlemen according to the method Li Nuo told her, and asked, "Do you understand?"

The four looked at each other and did not answer.

She might really understand it, but she didn't explain it clearly, so they didn't understand it.

At this moment, the four seemed to understand something.

They are not the same as she was at that time.

As a qualified mathematics teacher, not only should they understand mathematics themselves, but more importantly, they should let their students understand what they say.

On the latter point, both the four of them and the little girl from the Song family are unqualified...

Their eyes, inadvertently, looked at the figure at the door.

He can make a six-year-old child understand the obscure "Nine Numbers". He is born to be a teacher who preaches and solves doubts.

If Qingfeng Academy can have such a teacher, it will definitely cultivate more mathematical talents for Daxia.

After a moment, Li Nuo looked at Mr. Chen and said in surprise: "What, let me go to Qingfeng Academy to teach students mathematics?"

Another old man waved his hands and said: "No, no, no, Mr. Li has misunderstood. With your mathematical attainments, it is really a waste of talent to teach those naughty people. We want to invite you to Qingfeng Academy to teach the mathematics teacher..."

Of course, Li Nuo refused their request without hesitation.

It's okay to take some time to give them a lesson every day when he is free. If he is a full-time teacher, will he still be alive?

However, after explaining the questions to Mu'er so many times, Li Nuo found that he is indeed quite suitable for teaching.

Although the lady can understand it, it is another matter to speak it out.

It was really difficult for her to give lectures to others, so Li Nuo finally decided to give lectures by himself.

He had just finished talking when a figure hurried into the yard.

He looked up and saw that it was Wang Xianwei.

Li Nuo's heart moved. He had told the people in Chang'an County Office that if a serious murder occurred, they should come to Song Mansion to find him first. Looking at his appearance, could it be a big case?

Sure enough, Wang Xianwei ran to Li Nuo and said breathlessly: "Sir, there is a murder!"

After waiting for so long, Li Nuo finally encountered a murder case. He didn't even care about giving lectures. He immediately threw down the pen in his hand and said: "Lead the way!"

The old gentlemen who were listening attentively could only watch the figure disappear in front of them.

At that critical moment, they felt that they were just one or two words of guidance, which made them extremely uncomfortable. They could only look at Song Jiaren for help.

Finally, Mr. Chen spoke helplessly: "Song girl, how is it calculated here? Please tell us more..."