The love of functions and derivatives

Since the probability put forward the unreasonable request in advance, a week passed without looking for the function, and the function is rare.

One night a week later, in order to finish today's work, Function went home after working overtime for a while.

Seven o'clock is an embarrassing time, because arriving home at seven means leaving the work unit at six o'clock, which means that the time to leave the office is around 06:30.

At 06:30, Function was still in the office. Seeing this time, he immediately gave up his urge to order takeaway and decided to go home and order some noodles.

Saving money is also because the red envelopes without threshold of one of my groups have been used up.

But after returning home, Function sadly discovered that the vegetables and noodles in the refrigerator had been used up.He originally wanted to go to the convenience store downstairs to buy a box of instant noodles to soak in, and then he changed into his sneakers, when he suddenly remembered the well-wrapped cashier boy in the convenience store downstairs.

A gust of wind blows and rolls the curtains. The slight sound of the embroidered fabric rubbing against each other is infinitely amplified by the quiet living room. The cool wind penetrates into the heart along the sleeves and trousers of Function. A feeling of uneasiness.

Forget it.

Function gave up on going downstairs and, by the way, carried out the principle of lazy people to the end, he ordered a takeaway on the mobile app.

So, why should I naively decide what to cook when I come back?Obviously, food delivery is the ultimate destination for our migrant workers.

The chandelier on the top of the head is always flickering today, I don’t know if it’s a bad connection of the plug, and the function is dizzy, so the function simply gave up his surfing time.It's hot in summer, but I'm not afraid of catching cold, so I grab a thin blanket and take a nap on the sofa.

The function is woken up by the phone ringing.

"Hi, hello, your takeaway has arrived."

The function was woken up, and he was still a little out of shape. He opened the door with sleepy eyes, and the takeaway boy was carrying the beef noodles that he had ordered. The beef exuded the aroma of blowing.

The takeaway boy raised his left hand holding the beef noodles.

Due to sleepiness, Function half-opened his eyes to pick it up. When his eyes touched the delivery boy's hand, he was suddenly awakened by the scene in front of him. He opened his eyelids with difficulty——

Because of being too thin, the takeaway boy has a raised blue vein on his left hand.

Why is this hand so familiar?

There were several sharp and long cat meows from outside the community, and the derivative instantly broke out in a cold sweat.

It looks like the cashier's hand? !

Function suspiciously took the beef noodles with his right hand. The moment the beef noodles left the delivery boy's hand, a silver light flashed in the darkness.The takeaway boy's left hand holding the fruit knife sliced ​​through the air, brought out a sharp cold wind, and stabbed forward fiercely——

Function's drowsiness was instantly dispelled, and he instinctively moved to the right to hide.

The function was not caught successfully.

The takeaway guy is shorter than Function. He can only stab Function's heart with the blade facing outwards and sent up from below. But the takeaway boy behaves like he is plotting to kill someone for the first time. He chooses the blade facing inwards. If If you want to stab the opponent, you must face the big fist inward and the small fist outward, and bend the elbow inward to an angle to succeed.Obviously, the former option had a higher success rate, but the other party chose the latter option.

In addition, Function dodged intentionally, and the knife that was supposed to be pierced into the heart of the left chest ended up piercing into Function's left waist.

Black blood immediately dripped down and hit the ground heavily.