Li Yaonan was inexplicably flustered, and Ai Ai said: "That, brother, I ......"

"Actually, I don't have anything to do......" Li Yaonan was about to slip away from the soles of his feet, but was suddenly grabbed by Li Yaochen's neck, "Let's go, I haven't practiced taekwondo for a long time, you go with me." "Just quenching the fire in his heart.

"Don't wow...... "Help!" It's going to be crippled!

Li Yaonan was dragged away like this.

Seeing this scene, Si Qianai mourned for Li Yaonan for three minutes in his heart, and the poor child was pulled out and beaten for some reason, who let him stand up for such a black-bellied brother!

Sure enough, half an hour later, Li Yaonan limped downstairs with a swollen nose and swollen face, while Li Yaochen was the opposite, with a radiant face.

Si Qianai sympathized with him for a second when he saw his miserable appearance, and then continued to look down at the book.

Li Yaonan's face was loveless, and he complained: "Little princess, you see that I am like this, you don't care about me!" "It's so ruthless, there is no half a word of comfort, so wronged him!

In fact, Si Qianai is used to this kind of situation, and it is not the first time she has been beaten!

She was about to say a perfunctory opening to comfort her, but Li Yaochen didn't give her a chance to speak, "Why should she care about you?" Do you want to practice with me again? "It's enough for the little girl to care about him, even if it's his brother!

Li Yaonan broke out in a cold sweat when he heard his threatening tone, and shook his head vigorously, "No, no, no...... No, I'll go take a shower. After speaking, he dragged his almost crippled leg out of Li Yaochen's bedroom with difficulty, closed the door, and couldn't afford to hide if he couldn't afford to provoke him!

Si Qianai felt a little funny, as for the flash so fast.

Li Yaochen walked to the desk and found that the books on his bookcase were all messed up, and he didn't have to guess that a person dared to mess with his things so boldly.

But apparently a certain little princess did not feel half of the guilt after committing the crime, nor did she have the slightest intention of cleaning up, and continued to look down at the book.

Li Yaochen shook his head helplessly, bent down to pick up a few books that fell on the ground, and then casually sorted out the messy materials on the table, without any signs of anger, "What are you looking for?" ”

Si Qianai replied without raising his head, "I'm looking for a high math textbook, I can't find it, where did you put it?" "Caused her to be stuck on a high math problem for a long time.

Li Yaochen glanced at the messy desk, and flipped it like this, how could he find it......

"If you want to know anything, just ask me."

Si Qianai tilted his head and asked him: "The first derivative is the rate of change of the independent variable, so what is the definition of the second derivative?" ”

"The second derivative is the rate of change of the first derivative." Li Yaochen blurted out without thinking about it, his memory is amazing, and these theorems are firmly in his mind.

Si Qianai nodded, pointed to a question and continued to ask him: "How to find the area enclosed by this heart-shaped line?" ”

Li Yaochen quickly glanced at the graph and the given conditions, and then replied: "Use Green's formula to calculate the double integral ......"

As soon as he said this, Si Qianai understood, "I will, you don't have to say it, you can continue to pack your things." After that, he picked up the pen and started to do the question.

Li Yaochen: "......" dares to love her, just throw it away when she runs out.

He lightly tapped Si Qianai's little head, "Little girl with no conscience." ”

Then he resigned himself to continue to sort out these books and materials.

After tidying up, I went to take a shower and let her stay here obediently.