This is an advanced version of the evolution of the cardioid function, which diverges on the original basis, and the original one heart on the coordinate axis becomes many hearts, all gathered together, forming an axisymmetric figure with both the X and Y axes symmetrical.

It's good-looking, it's thoughtful, and it's tall.

It's just that......

Xia Qing thought for a long time, why had she never seen this function in a textbook, in any book or on the Internet?

Don't......

She looked at Si Muqing in astonishment? Could it be that he came up with it.

Because of surprise, Xia Qing's dexterous nose shrank slightly, looking particularly cute.

Si Muqing couldn't put it down, it felt very good, as delicate as jade, and he whispered close to her ear, "Let's call it Xia Qing." ”

“……”

The name...... It's too casual.

But Xia Qing's heart is sweet.

Su's father gave Su Qianli a lot of stars as gifts, named after Su Qianli, which was the father-daughter relationship of the local tyrant.

And Qing gave her a self-created function graph, which is the love of a scholar, which is unique, but because she is also a scholar, she feels much more romantic than any jewelry.

Because of the heart and wisdom, there is no way to measure it by value.

"That's moving? And there's more to come. Si Muqing bit her ear and wanted to kiss her, Xia Qing's heart was full of affection, but she was very uncomfortable, and pushed Si Muqing out slightly.

She was in the classroom, and she always felt that the back door or the window of the front door would suddenly pop out of the face of the head of the teaching office.

The teachers who patrol are all peeping in this way, to see if there are any classmates who play with their mobile phones during class time, eat, or fall in love after class.

Even if she graduates, Xia Qing is still a little shadowy, at least she can't kiss in the classroom.

Si Muqing didn't force her, the two held hands and walked together in the corridor of the third year of high school, heading towards the next destination.

Xia Qing shook the little hand that was closely connected to Si Muqing, swinging and swinging, as if she was swinging.

Today's moonlight is beautiful, with a crescent moon hanging high.

The sky was clear, and there was not a single cloud.

It's summer, but the cool wind blows across the cheeks and slowly drills into the neck, already with a hint of autumn coolness.

In the third year of high school, Xia Qing studied late at night, and if she stayed in school for a while, this corridor would become sparsely populated, and it would become gloomy.

But now, holding hands with my beloved, not only does not feel gloomy, but on the contrary, it has become warm, I really hope that this road can go all the way, keep walking, and never come to an end.

At the door of the chemistry laboratory, Si Muqing had already prepared the key and opened it.

Xia Qing looked at him with interest, every time she watched some TV series and watched what the actor was doing, she always liked to guess what the actor would do next, and guess one by one.

But Si Muqing's routines and surprises, she can't guess every time.

For example, last time, her shoelaces were loose, she thought he was gently tying her shoes, but she didn't expect him to tie the shoelaces of her two shoes together, so that she took the initiative to come to a "hug".

Therefore, now Xia Qing is still looking forward to what kind of surprise he can give her in the chemistry laboratory.

Si Muqing first helped Xia Qing put on a lab coat and gloves, and then put on himself.

Xia Qing looked at Si Muqing's incomparable side face, just now he had the feeling of being the most handsome people's teacher in the classroom, and now he seems to have become a handsome and knowledgeable doctoral supervisor, and it seems that every profession seems to be tailor-made for him.