Seeing Chu Xinrou planting behind him, Ye Huai'an reflexively leaned back, ready to hold Chu Xinrou, but he didn't expect Chu Xinrou's stool to slip.

Then Chu Xinrou fell into Ye Huai'an's arms.

What's even more embarrassing is that Ye Huai'an was about to hold Chu Xinrou's outstretched hand, but he happened to be pressed by the girl in his arms.

A fragrance came to his face, Ye Huai'an was about to pull out his hand to help Chu Xinrou up, feeling that his palm was soft, and he couldn't help pinching it.

"Ahh

When Chu Xinrou's head smashed against Ye Huai'an's chest, his hands were just wrapped around his waist, and the muscles on his face were very sufficient.

Chu Xinrou sighed that Ye Huai'an was in good shape, and suddenly felt that his chest was ......

It seems to have been pinched???

Chu Xinrou subconsciously jumped out of Ye Huai'an's arms, and glared at Ye Huai'an with a red face.

Ye Huai'an looked at Chu Xinrou's posture, and instantly understood what the place he had just pinched was, and couldn't help but feel a little annoyed.

Chu Xinrou must be angry now!

What's wrong with you, make people angry twice in the morning!

Scratching his head at Chu Xinrou, Ye Huaian was a little embarrassed and said, "I'm sorry, I didn't know it was ......"

"You shut up the old lady and clean you up after class!" Chu Xinrou gritted her teeth.

This chick is not angry?

Ye Huaian breathed a deep sigh of relief.

Because Ye Huai'an's class has excellent grades, the mathematics teacher is also a first-class teacher in the school, and it is Liu Chengguo, the leader of the mathematics teaching and research group.

Mr. Liu doesn't look tall, about 1.6 meters, but he has a happy smile on his face, which is easy to be kind.

The movement of Chu Xinrou's fall just now had already attracted the movement of the whole class.

"This just hit the head." Teacher Liu looked at Ye Huai'an and said jokingly, "Our Chu girl's face is as red as an apple, is this in the arms of the Venerable Master?" ”

Ye Huaian listened helplessly to Teacher Liu's jokes, and secretly glanced at Chu Xinrou, and found that Chu Xinrou hid her face behind the book.

"Teacher, don't make fun of us, it's time for class." Ye Huaian reminded.

"This sweetheart is starting to get anxious." The class burst into laughter.

But there is no shortage of suitors with Chu Xinrou in the class, who are staring at Ye Huai'an with fire in their eyes.

Ye Huai'an noticed that someone was staring at him, and turned his head to look over.

Seeing Zhang Heng, who was known as the mathematical genius in the class, looking at him with resentment in his eyes.

Ye Huai'an thought about it in his heart, and it was clear in an instant.

chatted with Chu Xinrou during the holiday after the college entrance examination in her previous life, Chu Xinrou said that Zhang Heng had just finished the college entrance examination and confessed to herself, but she refused.

Then Zhang Heng began to pester her at the door of the community and the door of the building, so that she didn't dare to go out.

At that time, Ye Huaian also gave Chu Xinrou advice.

Later, I didn't know where to find out that Chu Xinrou's little nephew was borrowing from Chu Xinrou's house, so I recommended myself to be a math tutor for the little guy.

In addition, Zhang Heng's mathematics score was quite high, so Chu's father and mother agreed.

When he secretly went to Chu's house to make up for classes, he learned that Chu Xinrou's vacation was going to be spent at his sister's house in Beijing.

Then at Chu Xinrou's signal, Zhang Heng was tortured by the little demon king for half a month, and had to bow to the Chu family and go back.

A smile hung on the corner of Ye Huai'an's mouth, in this life, he must not let this grandson bring trouble to Chu Xinrou again!

Hasn't this kid always liked to pretend to be 13? The most direct way is to defeat him in the area he does best!

When the math teacher entered the door, he wrote a problem on the blackboard for everyone to do, and named it the devil's problem.

It's all extremely difficult questions, it doesn't matter if you can't do it, the main thing is to exercise everyone's receptivity, so as not to be dumbfounded in the exam room.

Glancing at the question on the blackboard, he picked up the pen and calculated.

It only took Ye Huai'an five minutes to come up with an answer.

Chu Xinrou looked at Ye Huai'an who had been brushing and writing on the paper, glanced at it secretly, and puffed out her mouth while biting the pen.

After glancing at everyone, Ye Huaian opened the math textbook and looked at it.

Seeing Ye Huai'an's leisurely appearance, Chu Xinrou finally couldn't help it, stretched out her head and asked quietly, "Are you done?" ”

Ye Huai'an nodded, handed over the straw paper in front of him, Chu Xinrou glanced at him, and took it with satisfaction.

After a minute, Chu Xinrou pointed to one of the steps and said, "I don't understand here!" Why should it be used in this way. ”

"His derivatives are continuous and defined, you just keep looking for them."

Chu Xinrou continued to hold it and look at it as if she didn't understand, and at this time, there were already several students discussing the answers softly.

Ye Huai'an shook his head helplessly when he heard a few voices, and continued to read the math book.

I finally heard someone behind me talking about minus two, so I turned my head and said, "Yes, it's minus two, you are using ......"

The person behind patted his head and said in annoyance: "Damn, something went wrong here, it's not minus two!" ”

Ye Huai'an instantly became messy in the wind.

The people around looked at Ye Huai'an with an intellectual disability, and then began to discuss it again.

At this time, Mr. Liu clapped his hands, picked up the chalk and asked, "Who finished it, today's should be very difficult!" ”

The chattering in the classroom suddenly disappeared.

Zhang Heng hesitated again and again and raised his hand.

Teacher Liu nodded for him to answer.

"Two-thirds of a B multiplied by four-seventeenths of a under the root sign to the third power."

Teacher Liu shook his head with a smile, ignoring Zhang Heng's annoyed expression, and continued to ask, "Which other student has finished?" ”

Seeing that no one raised their hands, Teacher Liu looked at the first place in the class: "Has Fang Mulin calculated it?" ”

Everyone moved their eyes to a girl not far from Ye Huai'an's seat.

Fang Mulin put down the pen in his hand, raised his slender swan neck, and nodded with a wink.

"Then tell me the answer."

Fang Mulin didn't answer directly, but moved his gaze to Ye Huai'an's direction, and said with a smile: "There should be a classmate who has already calculated it before me." ”

Ye Huai'an turned his head to look out and saw Fang Mulin's eyes inexplicably with a strong fighting intent!

Ye Huai'an couldn't help but complain a little in his heart.

It's just a question, this girl won't be!

It looks like he's going to battle.

"Oh? Who's that? ”

The eyes of the whole class were focused on Ye Huai'an's direction.

Just as Fang Mulin was about to speak, Chu Xinrou, who was struggling to calculate, pressed the pen in her hand and said happily: "It's calculated, it's minus two, right!" ”

Ye Huai'an smiled awkwardly and gave Chu Xinrou a look to her back.

Chu Xinrou turned her head to look at her, only to see that the whole class was looking at her.

Fang Mulin, who had always been quiet and calm, also looked at Chu Xinrou with his mouth open.

"That's right! Unexpectedly, in addition to Fang Mulin and Zhang Heng, there is also a little genius in our class who has never been discovered! ”

Teacher Liu looked at Chu Xinroule and said with a smile: "Little genius will come up and talk to everyone!" ”

Chu Xinrou couldn't wait to stuff her head into the table now.

What, I don't know if I'm doing a good job or not.

Obviously, I watched Ye Huai'an, the nasty ghost, understand step by step.

What can I do?

Chu Xinrou couldn't help but quietly look at Ye Huai'an, only to see Ye Huai'an looking at her with affirmation and nodded.

For a while, Chu Xinrou didn't know where she got the courage, so she stepped up to the podium and took the chalk from the teacher's hand.

"This question is ......"

Speaking of the place where Chu Xinrou asked Ye Huai'an just now, it was stuck again.

Chu Xinrou looked at Ye Huai'an, and watched Ye Huai'an in his sight punch a few times in a row towards his chest.

In his heart, he instantly understood it, gave Ye Huaian a received look, the corners of his mouth curled slightly, and continued to speak.

"Because the derivative has always been defined, and the numerator denominator is zero to zero, the continuous derivation will finally lead to the answer minus two!"

Teacher Liu was the first to applaud, and everyone applauded, and when the applause slowly decreased, Teacher Liu wrote a few words on the blackboard.

"This is the trick we are going to teach you today, the law of Lobida."

"If you don't make a decision, Lobida!"