Madam, protect me!

Li Nuo had lunch at the county government office.

He had lunch at Magistrate Pei's house for the past two days. Yesterday, because Magistrate Pei's wife returned to her parents' house, he just made up a few bites of steamed buns.

I still had dumplings for lunch today.

Mrs. Pei's skill in making dumplings is outstanding, and she has a different flavor compared to the chef at home.

The Li family's chef is a seasoned gourmet, and the food he makes is full of color, flavor, and can't be faulted. It just lacks a homely flavor, but sometimes, this flavor is the most important.

Li Nuo looked at Pei Zhe across from him and asked doubtfully, "Don't you have Mr. Pei to go out on official business today?"

Pei Zhe picked up a dumpling and said, "Oh, County Magistrate Zhang came here just now and volunteered to help the orphans and widows for me. I couldn't resist him, so I let him go..."

Zhang Xiancheng was kneeling on the ground just now, holding his thigh, crying and snotting. If he didn't agree to it, he wouldn't get up. Pei Zhe had no choice but to let him go.

Originally, he should be happy that the assistant officer was so obedient.

But Pei Zhe couldn't be happy no matter what.

After Li Nuo beat Wang Yue in public yesterday, he vaguely felt that something was wrong. It wasn't until Zhang County Cheng uncharacteristically knelt in front of him and begged him to let him go, that Pei Zhe realized belatedly that... something was broken!

He has become Li Xuanjing's lackey!

Even if he is not, others think he is.

Speaking of which, these days, when Li Nuo was reviewing cases at the county government office, he was on his own, and the two of them even had meals together.

Yesterday, the doctor who took the merit examination sent his son to the county government to plead guilty, resigned from office overnight, donated money, and left Chang'an with his family. Apart from Li Xuanjing, who else has such a deterrent effect? ​​From the perspective of an outsider, even he felt that he had taken refuge in Dali Temple minister.

In today's court, all parties' forces are complicated, and the position of the Chang'an County Magistrate is extremely sensitive. It is impossible to stay aloof and aloof. Sooner or later, you will have to choose between sides.

He has already realized this.

But he didn't expect that before he could choose, someone else would choose for him.

"well……"

Thinking of Mr. Li's reputation, Pei Zhe let out a long sigh. This time, he couldn't even wash himself off if he jumped into the Yellow River...

"well……"

At this time, in the Song Mansion, after listening to Song Mu'er and Song Ning'er explaining this equation question with five terms, the gray-haired old man couldn't help but sigh, and he had deep doubts in his heart.

He has taught arithmetic all his life, is he really worse than a fool?

This question is already one of the most difficult questions in the "Equations" chapter of "The Book of Arithmetic". Some academy students who have studied arithmetic in depth for several years still cannot fully master it, but these two six-year-old girls, Not only can you calculate the correct answer, but you can also explain it clearly and logically.

It shows that they really understand.

There was no way he could teach them to be like this.

I am afraid of comparison in everything.

As long as he talks a little more profoundly, the two little girls will feel sleepy, just like their elder sister ten years ago.

This gave him a deep sense of frustration.

Not far away, Song Jiaren looked at him with a look that made him feel even more guilty.

He understood the meaning of that look.

Ten years ago, when he was teaching her arithmetic, he once commented that she had "no arithmetic talent." In his opinion, the arithmetic talents of the two twin girls from the Song family were inferior to those of Song Jiaren at that time. In fact, it’s only half a pound.

Now it seems that it's not that they can't learn it, but that they can't teach it themselves.

It is really misleading.

With this thought in his mind, he didn't teach anything new today. He just asked them to review the knowledge they had learned before, rewarded each of them with a flower, left a few questions, and left in a hurry...

Although Song Ning'er also got a reward from her husband this time, Song Mu'er also got one, so there was nothing to be happy about.

She looked at the new title in the booklet, her dark eyes darting around, not knowing what she was thinking.

Song Mu'er saw through her thoughts and snorted coldly: "Don't try to trick Brother Li Nuo into giving you a lecture again. I have already agreed on a secret code with him, and you can't deceive him anymore!"

Song Ning'er was stunned and asked, "What's the secret code?"

"One, two, three, four, five..."

Song Mu'er said something, then winked at her and said, "I'm already six years old, you treat me like a three-year-old child, and you still want to deceive the password, so I won't tell you, just a little bit..."

He stuck out his tongue at Song Ning'er playfully, and she ran away quickly.

Song Ning'er crossed her arms and said disdainfully: "What a broken code, who cares to listen to it? I'll ask Brother Yu..."

A moment later, there was a courtyard in the Song Mansion.

Song Yu's mouth went dry as he talked, so he picked up the teapot, drank it all in one gulp, and asked Song Ning'er with a sense of accomplishment: "Do you understand?"

Song Ning'er shook her head: "I don't understand."

Song Yu rubbed his eyebrows and felt a little headache.

This is what his husband told him about this arithmetic problem. It took him a long time to understand it. Moreover, he was already a teenager at that time and Ning'er was only six years old. Why is it so difficult for him to learn it now at the age of six? Have you learned arithmetic?

When he was six years old, he was still memorizing Jiujiu Ge.

In desperation, he could only tell it again.

"Understood?"

"don't know."

"You should finally understand this time, right?"

"Why is this happening here?"

"There are so many reasons why arithmetic is taught. This is how the teacher teaches you. Just do the same..."

…

Song Yu had finished three pots of tea and still felt dry.

At the same time, he also understood one thing. Even the simplest "square field" problem was too difficult for Ning'er now. She couldn't understand it at all.

Song Ning'er also understood one thing.

Her brother Yu was different from Song Mu'er's brother Li Nuo.

When Li Nuo taught her math problems, he would not say it like brother Yu. He would not only tell her how to do it, but also why to do it. He could understand what he said. Brother Yu's words were not as good as those of the teacher...

If I had known earlier, I would have let him play with his sepak takraw that day.

In that case, he would like her as much as he likes Mu'er, right?

In Song Ning'er's view, it was normal for others not to like her if she didn't let them play with her toys.

If she was treated like that, she wouldn't play with herself either.

"Ah..."

Thinking of this, she couldn't help but feel a little regretful. She sighed leisurely, imitating the adults.

...

Chang'an County Government Office.

Li Nuo came back early today and didn't wait until dark to leave.

He himself was fine, but he was embarrassed to drag so many people from the county government to work overtime with him.

Anyway, the case was there. If it was not sentenced today, it could be sentenced tomorrow. He had gained enough today.

Even if there was still no serious case, he had gained seven days of life in one day, and now his life span reached 48 days.

Before the court was closed today, there were still many people queuing up. It was foreseeable that he would have something to do in the next few days.

After returning home, Li Nuo found that Song Muer was already waiting for him.

No, this could also be Song Ninger.

It would be fine if the two sisters looked the same, even the clothes they wore, the jewelry they wore, and the sachets they hung were the same. Li Nuo couldn't tell who was who.

He was about to check the code, and the little girl spoke first: "One, two, three, four, five!"

"..."

Li Nuo was speechless. This silly child, the code was used to test Song Ninger, not to test him. He didn't have a twin brother, so how could she say the code first?

Thinking that she was only a six-year-old child, Li Nuo didn't say anything.

Li Nuo casually asked, "Where is your sister Jiaren?"

Song Muer said, "She was here just now, but I don't know where she went now. Brother Li Nuo, can you tell me about this problem again?"

Li Nuo took the booklet she handed over. Today's problem is no longer a system of multivariate linear equations, but the area of ​​irregular figures, which is classified as a "square field" problem in "Mathematical Classics".

"Square fields" refer to square fields. The government needs to accurately measure the land area to determine the specific taxes. There is an urgent need to calculate the area of ​​various irregular fields, and therefore the "square field" category has been derived in mathematics.

In this chapter of "Mathematical Classics", students need to master the calculation of the area of ​​various figures such as squares, rectangles, triangles, trapezoids, circles, and sectors.

The question Song Muer asked him was about an irregular figure made up of a rectangle, a triangle, and a trapezoid. All you had to do was divide it into zones and calculate the area of ​​each part of the figure, and then add them up. It was very simple for Li Nuo, but Song Muer didn't even know the area calculation formula, so Li Nuo had to teach from the very basics.

It was okay to teach students with a certain foundation, but Song Muer had never been exposed to these things. Even if the area of ​​a rectangle was the base times the height, she would ask why.

Li Nuo had to start from the most basic to explain it to her, and he explained it several times, and it was not easy for her to have the concept of area.

When it came to the area of ​​a triangle being half the base times the height, she started asking why again. Li Nuo had to make auxiliary lines and fill in two rectangles, and let her deduce it herself. Fortunately, she had already understood the calculation of the area of ​​the rectangle just now, and after Li Nuo filled in the complete figure, she could easily deduce it herself.

Then there was the trapezoid...

It took a lot of thought to let Song Muer calculate this question by herself, and Li Nuo breathed a sigh of relief.

This question itself is not difficult, but it is not easy to explain it clearly to a six-year-old child.

Just as Li Nuo felt a little sense of accomplishment, a small figure ran into the yard, looked at the figure sitting next to Li Nuo, and said angrily: "Song Ning'er, what are you doing!"

Li Nuo looked at the angry little girl at the door and was completely dumbfounded.

After a while, Song Mu'er put her hands on her hips, looked at Li Nuo with a look of disappointment, and said unhappily: "What can I say about you? 'Going up the mountain to fight the tiger' is for Song Ning'er to be right, not for you to be right. How can you be so stupid and let her fool you again!"