In a laboratory that doesn't even have a name, it's just a number.

A middle-aged woman wearing glasses and a white coat tightened the rubber gloves on her hands and raised the toad she was pinching.

"Today's experiment is pre-contraction and compensatory interval. The purpose of this experiment was to learn how to record the heartbeat curve of the frog in vivo, to understand the characteristics of myocardial excitability by giving stimulation at different periods of cardiac activity, to observe the pre-period contraction and compensatory pause, and to verify the characteristics of the myocardial effective refractory period with a particularly long period.

The experimental principles, required equipment, and experimental procedures are all in the textbook, and the students who have previewed them according to my requirements should be clear. Next, I'm going to do it on the ground, and let's get together and take a look. ”

At the sound of her call, the young men and women sitting on their respective test tables swarmed and surrounded her in an instant.

At this time, in the corner of the laboratory by the window, the big boy who was holding his chin and looking out of the window finally reluctantly moved his gaze, and slowly got up and walked towards the surrounded experimental table.

The big boy's black hair and black eyes, and the standard Asian face are Zheng Ming before his death in his previous life. It's inconspicuous in this all-Asian laboratory. The only thing that stands out is the longer broken hair that covers the eyebrows.

After trying to pat on his feet many times to no avail, Zheng Ming sighed helplessly. The human wall in front of him is like an iron wall, which makes him helpless and daunting at the same time.

Glancing at the classmates next to him who were standing on the round bench and stretching their necks to look because they couldn't squeeze in, Zheng Ming smiled bitterly and turned to look out the window.

"Alright. That's pretty much it. If you have any questions during the experiment, you can ask me. Now each group goes to the pool and gets two toads. The number of toads is limited, and I hope you don't waste it senselessly. ”

Just when Zheng Ming was wandering outside the world, the explanation and demonstration had been completed. As the middle-aged women in white coats clapped their hands, the young men and women in a group scattered and walked to the pool.

In the porcelain pool, lifeless toads lay lazily at the bottom, and occasionally one or two toads with a little vitality stepped on the rest of the toads and tried to jump. But they could not escape from the pool that surrounded them.

Zheng Ming's group had five people, and because of the incomplete number of people in the class, there was one more person than the other four-person groups. Unfortunately, however, they did not outperform the other groups in equal proportions.

I saw that other groups had already started experiments. And their own group was still standing by the pool, looking at the stacked toads and hesitating. The boys in the group, who are usually quite active, gritted their teeth, pushed their thick-rimmed glasses, picked up the toad, and took over the task of killing the toad in disguise.

It was clear that he had been lucky enough to squeeze into the crowd and listened attentively. This can be seen from the movement of his left hand to pinch the toad's back upwards, and at the same time fix the toad's limbs with his fingers, and press his index finger against its head.

Then he took a deep breath and sliced the slender needle-like marrow destroyer in his right hand across the top of the toad's head.

At some point, the members of the group had gathered around him, looked at the long needle slowly drawn from the toad's back, and swallowed nervously.

When the long needle slid to the bottom of the toad's triangular head, slightly upwards where the two forearms were extended, his right hand slammed into it with a slam of force.

Suddenly pierced into his body by a long needle, the toad fixed on his left hand, the originally slight body movements, suddenly became violent.

With a panicked expression, he deflected the long needle on his right hand and pressed it towards the toad's brain.

"What's going on? The resistance is so big. There is no feeling of being relaxed after breaking through the barrier as the teacher said. ”

"Did you plug it incorrectly? It was still moving on all fours. ”

At this time, he didn't care about the delicate reminder sound in his ears, the sound that made him itch on weekdays, but at this time, it was like the ringing of an alarm clock in the early morning.

He hastily pulled out the long needle a little, deflected it again, plunged it downward, and stirred it again.

The resistance on the long needle and the toad's struggling limbs were a sign of his mistake. But there was a voice in his heart that kept comforting him.

"What if I think too much? What if I do it right? ”

Eventually, the toad's limbs stopped swinging, and he was able to breathe a sigh of relief. However, when he let go of his left hand, he found that the toad's body had been twisted by him.

"Let me do it."

Just when the other four people looked at the tragic situation of the toad in front of them and were at a loss, Zheng Ming, who had been wandering outside, approached. After speaking in his usual slow voice, he picked up the long needle on the bench.

Before the rest of the people could stop it, Zheng Ming fixed the toad in the same posture.

As the long needle roamed over the toad's skin, Zheng Ming was keenly aware of a slight pause. The right hand pressed down vertically with a slight force. The long needle paused for a moment and then was easily inserted, followed by a slight agitation of the cerebral cord and spine, destroying the nerves in it.

With Zheng Ming's movements, the toad struggled for a short time before stopping his movements. Everything seems easy and uneventful.

This is the first time that Zheng Ming has taken the initiative to kill, and the first time that he has taken the initiative to deprive the rest of the creatures of their lives. However, unexpectedly, his heart was calm, without the slightest wave. There is still a residual touch on his left hand when the toad hammer struggles, but it can't shake Zheng Ming's heartstrings.

Even though he knew that he had never had any idea of respecting the lives of other species, he was still startled by his bland reaction.

"That's it?"

"Hmm."

If you don't do it sooner and don't kill so well, you're looking at my jokes.

Of course, Zheng Ming couldn't hear the voice of the glasses classmate, but he could guess a thing or two from the other party's Tie Qing's face. It's all about a strong age, and it's inevitable to be a little emotional. Zheng Ming didn't care about handing over the toad in his hand and looked around.

Most of the people around him took the initiative to kill for the first time in their lives, and tension was inevitable. Therefore, there are frequent cases of mispositioning and forcibly agitating with brute force. Of course, there are those who play after knowing that they have failed.

"Since death is inevitable. Why let them die so painfully? ”

Looking at the tragic situation in front of him, Zheng Ming sighed lightly. After hesitating for a while, he finally walked up. After a brief conversation, Zheng Ming turned out the failed toads and ended their lives cleanly. Of course, it is inevitable that it will take a little more effort to help kill other toads.

"Look at him, killing the toad with a blank face. It's cruel. ”

"Looks like he's very skilled."

"Who knows? Maybe you took a functional lab class before repeating a grade, right? ”

The whispering of discussion behind him did not escape Zheng Ming's sensitive ears, but he only did not react in the slightest after a beating.

After the initial help provided by Zheng Ming, the group successfully completed the experiment. And the data was obtained for writing the report.

And Zheng Ming, who had nothing to do on the side, was in a daze as always.

"Ha, look."

The frolicking and ostentatious tone managed to disturb Zheng Ming and attract his attention.

I saw several male classmates at the next table who were also doing nothing and were giggling and playing.

On the wooden plank they held aloft, a toad stripped of its skin and eviscerated, nailed to it in a large font.

Looking at their stupid looks showing off excitedly, Zheng Ming frowned and looked away.

What are they doing? What is there to be proud of? What's the point of that? Is it cruel or powerful to use this boring trick?

Zheng Ming thought so in his heart, and his disdain was even greater.

……

"Hey, Moe Boy."

The experiment ended quickly, and Zheng Ming, who was walking alone on the campus street, was stopped by shouts behind him. It didn't take him to look back to know that it was his roommate who called him by that title.

Looking back, sure enough, a young man with a high nose and a sunny smile was trotting towards him. At the same time, a figure with a well-defined face and a burly bear-like figure followed.

"Hey, Ah Meng, how does it feel to go to class with your junior? Are there any good-looking school girls? ”

For this roommate who is too stable and has an unusual coquettish personality, Zheng Ming has long been accustomed to his open-mouthed personality. After hearing this, he slapped him and then mocked: "It's convenient to cultivate into a human being." It can spring all the time. What do you have in your head besides a woman, you blind bear elf? Senior sister is not enough, you are a scourge, are you? ”

"Cut, what do you know? I call it charm. Hey, I'm going to the club at night, will we go together? ”

"Do you put two index fingers on your chest and do the bear blind dance? Exempt. ”

"Huh? More than a year ago, how long are you going to talk about it? ”

"Until I can't sting you anymore."

"You...... Never mind. Dad doesn't know as much as you do. Speaking of which, I remember you said in the morning that you were going to take a class on functional experiments, how about it? ”

"I don't understand the experiment, but I am very familiar with the technique of killing toads."

"Haha, I also made a bet with the old demon that you would sleep or be in a daze for the whole class."

"Huh? It's better than a blind bear taking a selfie with his phone all morning, right? ”

"Alright. You two stop arguing, your head hurts. What are you going to do after that? Are there classes in the afternoon? ”

"Nope."

"Yes, no."

Seeing that the two of them looked at themselves with squinting eyes after hearing the answer, Zheng Ming replied to them with the same expression.

"What's wrong? Is there a problem? ”

"It's okay...

"No problem...

"I'm going to the library in the afternoon after dinner, can you come too?"

"Huh? Old demon, are you showing off? He doesn't even want to go to class, so you take him to the library to study? ”

……

In the midst of the noise, the three of them walked in the direction of the cafeteria. If Zheng Ming's classmates passed by at this time, they would definitely be surprised by the scene in front of them.

The Zheng Ming, who is quiet and soft-spoken at all times, is a somewhat gloomy guy who maintains a sense of distance at that moment. has such a bright smile, and even has a noisy side on the side of the street.