Chapter 1113 Sister

Gu Yang secretly made up his mind to let the children in the orphanage have books to read and prevent such geniuses from being buried!

After Gu Jin finished solving her problem, he also wrote an equation on the blackboard. It was just a quadratic equation.

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

Gu Yang blinked, "Have you not seen the quadratic equation yet?"

Gu Jin raised his chin slightly, proud and arrogant: "Exerting one example to another. Do you know? Do you want me to teach you?"

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

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

Gu Yang was confused.

Gu Jin: "No?"

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

It's time to show off your real skills!

Sure enough, after she finished writing, Gu Jin was at a loss for words, her brows knitted together, and she stared at the question intently.

Gu Yang put his hands on his hips and asked, "How is it? You don't know how to do it anymore? Do you want me to teach you?"

Gu Jin stared at that question for a long time, not even understanding what some of the 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 explain it."

Gu Yang twirled the chalk with her little finger and said with a proud face, "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 sister from now on."

Gu Yang: "..."

Gu Yang's smile disappeared.

This little kid is only a few years old, how can he trick others?

Gu Jin reached out and poked Gu Yang's forehead again, "Not happy? I don't go around pretending to be someone else's sister. If you call me sister, you will be your sister from now on."

Gu Yang, who always acts as someone else's sister: "..." was taken into consideration.

Forget it, she is essentially an adult and cannot argue with this little kid.

It was childish for her to embarrass a primary school student with a college question.

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

Gu Jin listened carefully and did not interrupt Gu Yang in the middle.

Gu Yang was a little surprised. Could it be that Cheng Quan understood?

Then I heard Gu Jin ask a series of questions: "What do these symbols mean?"

Seeing her eagerness for knowledge, Gu Yang explained everything one by one.

Gu Jin also drew an ∞ symbol on the blackboard: "Infinity? Why 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 pinched the two ends together to make a simple Möbius strip, "This is called a Möbius strip. If someone walks on it, it will go on forever along the road it sees. This 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 and ran his fingers along the strip. He found that it was indeed back to the starting point, and his eyes became even more interested.

"There is only one side! There is really no end. What if someone really falls into the Möbius belt?" Gu Jinxiao frowned, looking serious, thinking about this problem seriously.

Gu Yang was slightly stunned.

If someone really fell onto the Möbius strip...

Then he strives to move forward and eventually returns to the starting point. He will never stop dying and will never reach the end.

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