He silently put a dust bag on the pink diary.

Ning Haoyu silently turned his head to look at him: "Gu Xin'an, what are you doing?" ”

Gu Xin'an didn't look up, carefully wiped the dust on the dust bag, and then naturally answered: "I remember that in your drawer, there is an unused high-end gift box, take it and use it." ”

Ning Haoyu: "What are you going to do?" ”

Gu Xin'an: "Ah, it's okay, I suddenly like it." ”

Ning Haoyu debunked and said: "You tell the truth, you shouldn't be using that box to hold this broken book." ”

Gu Xin'an raised his eyes and glanced at him coldly, his face expressionless: "No." ”

Ning Haoyu: "What's that going to do?" ”

Gu Xin'an: "Don't talk nonsense, you can bring it if you want it." Otherwise, believe it or not, I'll throw away all the wine you hid in my cupboard. ”

Ning Haoyu: "......"

Helpless, Ning Haoyu had no choice but to give the box to Gu Xin'an.

Then, Gu Xin'an, who got the box, so blatantly put the book with the dust bag in front of Ning Haoyu.

The corners of Ning Haoyu's mouth twitched slightly: "You didn't mean ......"

Put the notebook back in the drawer and close the drawer. Gu Xin'an frowned at him with cold eyes, and said expressionlessly: "You didn't see any fighting." ”

Ning Haoyu: "? ”

Gu Xin'an: "Stay at night and add ......"

Ning Haoyu: "I didn't see anything. ”

Gu Xin'an: "Good." ”

Ning Haoyu's voice was a little quieter: "Let's talk about business, what about Yueyue and Kaka's knowledge competition, anyway, you are the referee, it is better for you to directly judge one of them as the champion and the other as the runner-up." ”

Gu Xin'an frowned at him coldly, as if to say: You are teasing me.

Ning Haoyu: "Okay, I'll just make a joke." ”

At that time, Gu Xin'an took out two black notebooks, one of which was thrown to Ning Haoyu and the other was kept for himself.

Ning Haoyu: "What is this for?" ”

Gu Xin'an: "It's time to witness the miracle, go and help Kaka make a quick note for Xueba." ”

Ning Haoyu looked stunned and looked at Gu Xin'an: "Are you serious, do you really think that the mathematics level of the two of them can win the award?" ”

Of course, Gu Xin'an felt that he couldn't.

But his little ancestor is lying next to him, so he can't do it.

Gu Xin'an: "Yueyue is okay, is it possible that you think Kaka is not good." ”

Ning Haoyu: "......"

Before Ning Haoyu could react and how to answer his words, Gu Xin'an had already opened the notebook and opened it

I started writing the formula for Yueyue.

A black pen, flying on pure white paper.

What a beautiful word.

It's been a long time since I've seen the boss write, so Ning Haoyu couldn't help but take a few more looks.

Gu Xin'an: "Plagiarism is prohibited. ”

Ning Haoyu: "Oh, you also forbade club romance at the beginning. ”

Gu Xin'an: "......"

That's it, this will not be the same as him, and it is the right thing to hurry up and write a quick note for the little ancestor to learn from him.

After all, there are only ten days.

Thinking of this, the signature pen in Gu Xin'an's hand wrote faster.

Those formulas that have long been memorized in their hearts, like tourists in major scenic spots during holidays, line up to put paper on paper and become part of the notebook.

First the formula, then the definition interpretation, then the analysis of the classic example questions, etc.~

In order to be able to make his little ancestor's math scores, he can grow by leaps and bounds in a short period of time.

Gu Xin'an, a programmer in the computer department, is about to develop himself into a mathematician in the field of mathematics.