Madam, protect me!

The next morning, when Li Nuo got up from the bed, he sneezed three times in a row.

He wrapped himself in the quilt and felt a little warmer.

The weather in Chang'an is really changeable. It was a bit hot the previous two days, but today it suddenly cooled down without warning, as if it seamlessly transitioned from summer to winter, and the autumn in between was eaten by dogs...

Complaining in his heart, Li Nuo rubbed his neck, and the back of his neck was slightly painful. It seemed that he had a stiff neck last night.

After getting dressed and washing up, he walked into the yard and found that the yard was full of fallen leaves and the ground was also wet.

It should have rained last night. He remembered that there seemed to be thunder in the middle of the night...

The maid of the Song family was sweeping the fallen leaves in the yard. Song Muer came in wearing rain boots and skipped in. Seeing that Li Nuo had already gotten up, she smiled and invited him, "Brother Li Nuo, come step on the puddle..."

As soon as she finished speaking, she had already jumped into a shallow puddle, splashing water everywhere. The maid who was sweeping the yard was frightened and hurriedly reminded her, "Miss, be careful not to fall..."

Before she finished her words, Song Muer slipped and lost her balance, falling backwards on her back.

Just when the little maid screamed, the little girl had already completed a beautiful somersault in the air and landed steadily.

This scene made Li Nuo envious. If he had slipped just now, he would definitely have fallen hard.

It saved the need for secret signals. The one who could do such a difficult move must be Muer, because Song Ninger was afraid of hardship. Although her martial arts talent was very amazing, she had never practiced martial arts seriously.

Why didn't Li Nuo think of it before? Actually, to confirm the identities of the two sisters, there is no need to bother with secret signals.

Let them do a somersault on the spot. The only one who can't do it is Song Ning'er.

Of course, Li Nuo would not be so naive as to step into a puddle with Song Mu'er. He is so old. If others see him, they will think he is still stupid.

More importantly, it has just rained and the ground is so slippery. He is not as agile as Mu'er. If he falls, his old waist will be broken.

Facing Mu'er's invitation, Li Nuo waved his hand and said, "You play by yourself first. I haven't had breakfast yet."

He was going to the kitchen to find something to eat. Just as he walked to the door of the courtyard, he accidentally stepped on a piece of water. His feet slipped and his body lost balance. He was about to hit the stone steps at the door.

A fragrant breeze blew in his face. Li Nuo felt someone gently holding his waist. He took advantage of the situation and made a beautiful rotation in the air, and then leaned on a soft body.

Song Jiaren took one hand off Li Nuo's waist and held a wooden plate with the other hand. On the wooden plate, there was a bowl of porridge and two dishes of side dishes.

Li Nuo didn't like to eat greasy food in the morning. A bowl of porridge and two dishes of refreshing side dishes were just right. His wife really understood his taste.

After dinner, Li Nuo asked Song Muer in surprise: "Why haven't I seen you doing math problems recently? Didn't Mr. Chen assign them to you?"

Song Muer said happily: "Mr. Chen didn't teach us these days. He said that we don't have to take the imperial examination. What we have learned is enough. We don't need to take math classes in the future..."

Muer was very happy, and Li Nuo was speechless.

He saw Mr. Chen in the Song Mansion almost every day. He thought he was here to take classes, but he didn't expect that he was here to listen to the class.

After getting in touch with trigonometric functions, he seemed to have opened the door to a new world. He had endless questions every day. Fortunately, Li Nuo had a solid foundation and was not stumped by him.

Li Nuo didn't see Mr. Chen yesterday. Today, he read books at home for a long time, but he didn't come over. I don't know if there is anything wrong. He used to come every noon, which was more punctual than Li Nuo going to work in the county government.

At this time, Qingfeng Academy.

In the small courtyard by the lake, three sharp eyes stared at Mr. Chen.

An old man pointed to the two lines of formulas on the paper and said, "From here to here, how did you get here? You might as well explain it more clearly. We don't understand..."

Mr. Chen looked calm on the surface, but he was sweating profusely.

He didn't understand the process of this step. He planned to ask Li Nuo yesterday, but since yesterday, he was entangled by these three guys and couldn't get away at all.

The three people stared at Mr. Chen.

At first, they believed in the surname Chen, but as time went on, they gradually found something wrong.

What Chen Xuanli talked about every day was indeed something they didn't understand before, and it belonged to a new field of mathematics. But whenever they asked questions, he would never answer them in person, but waited a day. If they asked new questions on the same day, he would wait another day...

This had to make people suspicious.

Having dealt with Chen for a lifetime, the three of them knew his character very well.

If he had studied these things long ago, he would definitely show them off and would not have waited until now.

Considering his previous abnormal behaviors, they had to wonder if there was an expert behind this old guy. The real powerful one was the expert behind him.

This Chen was just pretending to be powerful and bluffing...

Seeing that Mr. Chen was slow to speak, the old man surnamed Lu asked suspiciously: "Why, don't you know it either?"

Mr. Chen wiped the cold sweat from his forehead and said: "Of course not, it's just that the three of you are really stupid. I explained it so clearly, but you still don't understand. I'm thinking about how to explain it in a simple and popular way..."

He stood up and said: "But I don't have time today. I have to go to Song Mansion to teach those two little girls. I will answer your questions tomorrow..."

He walked out of Qingfeng Academy and stood at the entrance of the academy, looking around. After a moment, he picked up the book in his hand and ran quickly in a certain direction.

At this time, a carriage slowly drove out from Qingfeng Academy. Three old men sat in the carriage, pointing at a figure that was about to disappear in the distance, and urged: "Quick, follow!"

On the carriage, a middle-aged man looked helpless.

In fact, he still had some important things to do, but before the carriage left the academy, it was hijacked by these three gentlemen.

Even if he is the dean of the academy, he must maintain enough respect for these three elderly people who have dedicated their lives to the academy.

He could only look at the coachman and said helplessly: "Listen to the gentlemen..."

Song Mansion.

After Li Nuo had dinner, when it was almost dark, Mr. Chen finally arrived late.

He seemed to have gone through some strenuous exercise. He was panting and sweating. As soon as he entered the door, he took out a book and asked Li Nuo: "Mr. Xiao Li, how did you get from here to here? I don't know." I understand, please tell me more..."

Li Nuo took a look and couldn't really blame Mr. Chen.

He missed a step in the derivation of this formula. Although it does not affect the conclusion, it is indeed a bit too jumpy for Mr. Chen who has just come into contact with this knowledge...

He picked up the pen and added the missing step. After Mr. Chen looked at it, a look of surprise appeared on his old face and he murmured: "I see..."

He shook his head and said with emotion: "Exquisite, really exquisite. This seemingly simple step, I thought about it for two days and never thought of it..."

As he finished speaking, he suddenly noticed that Li Nuo opposite him raised his head and looked behind him.

Mr. Chen turned around and saw three extremely angry old faces.

"Shameless!"

"Shameless!"

"I have lived for sixty years and have never seen such a shameless person!"

…

After a moment, Mr. Chen sneered and said, "I never said that I came up with these things..."

The three of them were speechless for a moment when they heard the words.

Thinking back carefully, this shameless old guy seems to have never said that.

Although he never admitted it, he didn't deny it either!

Regardless of arithmetic attainment or shamelessness, among the three, no one can surpass him.

The three of them temporarily looked away from this shameless guy and looked at the young man opposite.

Could this person be the master who has been guiding Chen Xuanli behind his back these days?

How is that possible?

He looks so young. At such a young age, he should not be a weakling, but he can come up with such a sophisticated mathematical theory.

If the master behind Chen Xuanli is really him, wouldn't the three old guys have lived like dogs in these years?

The old man surnamed Lu pointed at Li Nuo, his eyes full of shock. He looked at Mr. Chen and said in disbelief: "Were he the ones who solved all the difficult math problems before? What you are teaching us these days was also what he taught you?" "

Seeing his expression, Mr. Chen snorted coldly and said, "Lu, don't look down on others. Although Mr. Li is not old, his arithmetic skills are far higher than those of us old guys put together." Far less than..."

The three masters of arithmetic did not believe what Chen Xuanli said.

If the master behind him was a reclusive man who spent his whole life studying arithmetic, the three of them would be able to accept it.

It just so happens that he is just a young man.

A boy who has just turned eighteen.

At a young age, he had achieved achievements in arithmetic that none of the four of them combined could match. This was so unbelievable that they found it difficult to accept it for a while.

It wasn't until the old man surnamed Lu, who didn't believe in evil, asked some of the questions he had accumulated in his mind in front of him in front of him, and got detailed answers, that they finally believed it even if they didn't believe it.

So, when Song Jiaren walked into the small courtyard, she saw such a scene.

Four gray-haired old people, like students, sat on the stone benches neatly, with serious and serious expressions.

Her husband, on the other hand, looked calm and calm, holding a long wooden ruler in his hand and talking to them...

There will be another chapter tomorrow at noon.