Chapter 1113： elder sister

Chapter 1113 Sister

Gu Yang secretly made up his mind that he must let the children in the orphanage have books to read, so as not to let such a genius be buried!

After solving her problem, Gu Jin also casually wrote an equation on the blackboard, which was just a quadratic equation.

Then he gave the chalk to Gu Yang and motioned her to do the question with his eyes.

Gu Yang blinked, "Didn't you see the quadratic equation?"

Gu Jin raised his chin slightly, proud and coquettish: "Infer other things from one example. Will it be? Do you want me to teach you?"

Gu Yang thought to himself, this little kid is so cute, but he looks quite cute.

Gu Yang suddenly wanted to stretch out his paws and pinch Gu Jin's face, but just when she was about to move, Gu Jin reached out and pinched her face first.

Gu Yang looked confused.

Gu Jin: "No?"

Gu Yang snorted, picked up the chalk to solve the problem, and wrote a college advanced calculus problem on the blackboard.

Time to show real skill!

Sure enough, after she finished writing, Gu Jin was at a loss for what to do with the question, her brows were all knit together, and she stared at the question intently.

Gu Yang put his hips on his hips and said, "How about it? No way? Do you want me to teach you?"

Gu Jin stared at the question for a long time, and she didn't even understand what some symbols meant, so she frankly admitted the fact that she really didn't know how to do it.

She gave the chalk to Gu Yang: "Here, come here, and tell me how to solve it."

Gu Yang twirled the chalk with his little finger, his small face proud: "Call me sister."

Gu Jin's expression remained unchanged: "What's your name?"

Gu Yang: "Sister."

Gu Jin nodded seriously: "Yes. You will be my younger sister from now on."

Gu Yang: "..."

Gu Yang's smile disappeared.

How old is this little boy, how can he be a trickster?

Gu Jin reached out and poked Gu Yang on the forehead again, "Aren't you happy? I don't want to be someone else's sister everywhere. You call me sister, and I will only be your sister from now on."

Gu Yang who is always being someone else's sister: "..." has been connoted.

Forget it, she is an adult at heart, and she can't care about this little kid.

It is naive of her to embarrass a primary school student with a college topic.

She picked up the chalk and wrote the steps on the whiteboard while explaining: "This question..."

Gu Jin listened carefully without interrupting Gu Yang.

Gu Yang was a little surprised, did he understand everything?

Then Gu Jin asked a series of questions: "What do these symbols mean?"

Gu Yang saw that she was eager to learn, so he explained them one by one.

Gu Jin also drew a ∞ symbol on the blackboard: "Infinity? Why do you use this symbol to represent infinity?"

Gu Yang picked up the waste paper on the podium, folded it into a paper strip, rotated it half a circle, and then pinched the two ends to make a simple Mobius strip, "This is called a Mobius strip. If someone walks on it, it will go on forever along the road it sees, and the road is endless.

And you see, this Möbius strip looks very similar to this infinity symbol. "

Gu Jin took the Möbius strip from Gu Yang's hand, walked along the paper strip with her fingers, and found that she had indeed returned to the original point, her eyes became even more interesting.

"There is only one side! There is really no end. What if someone really falls onto the Mobius strip?" Gu Jin frowned, with a serious expression, thinking about this question seriously.

Gu Yang was slightly taken aback.

If someone actually falls on the Möbius strip...

Then he strives forward, and finally returns to the starting point, never dying, never reaching the end.

Gu Yang felt something flashed through his mind, but he couldn't catch it.

(end of this chapter)