The love of functions and derivatives

"Ah——" One night, Function slurped down some red dates and white fungus porridge on the takeaway and lay on the hospital bed and sighed, "This life like a pig being fed and drank is exactly what makes people feel like this." So satisfying, so addicting. I just want to let myself sink into it."

The derivative continued to feed the function without shaking his hands.

"Ah——" Function recalled the sweetness of the red dates in his mouth, and sighed again, "I am just an ordinary and ordinary function, who suddenly possessed the ability of immortality overnight, life is always full of Adventure!"

"You've always had it." Derivatives mercilessly point out where the function statement doesn't match the truth.

"Oh, please don't hold back the words. You come to see me every night, and you pay for me to deliver meals—" Function turned a deaf ear, blinking at the derivative, dragging his chin with his right hand, with an obvious smile in his eyes, " How do you want me to thank you?"

Derivative paused his hand holding the spoon, raised his eyes to look at Function, then lowered his head, deliberately scooped up a spoonful of porridge with red dates, and sent it to the corner of Function's mouth: "Eat quickly, the porridge is getting cold."

Function obediently did not say a word, and obediently finished the porridge.

The night in the hospital is so quiet that you can hear the dripping drip and the sound of the wind squeezed in through the gap in the window. Looking at the side face of the derivative who is serious about packing up, the function still has the sweetness of red dates and white fungus in his mouth, he suddenly wants to say something.

Of course he did just that—

"Then, have you ever heard a saying called——You can't repay a life-saving grace, it's better——" Function looked up at the guide, revealing a delicate jaw line, and the rising tone was a little itchy, "It's better to use I promise."

Derivative had just packed the tissue lunch box and so on, when he heard the words of the function from behind, he stopped his busy movements and turned around slowly.

The ambiguous breath wandered around, and the gentleness in the air almost drowned him, his lips moved slightly, and then something flashed back in his mind, his eyes dimmed as if awakened from a dream, he turned Overhead avoiding the sight of the function, as if running away, "I have something to do, I have to leave first, I will be back soon."

Derivative strode out of the corridor of the hospital, leaned on the railing and opened the window. He had quit smoking for several years and suddenly committed a crime. Derivative faced the window and took a few breaths of cold wind to calm himself down.

No, now is not the time.

I can't drag the function down the pit too.

Function was the only person left in the ward, and the smile on Function’s face couldn’t hold back. The medicine in the infusion tube fell drop by drop, probably because the infusion was too fast. The medicine is poured into the veins, the blood circulates, and the chest is also cool.

what is this?

Am I rejected?