Du Yiyi's words were really too realistic, and Cheng Jiayi didn't even want to find an excuse to refute it.

If it is said that the killing that started in chaos was for survival, it was helpless. Liu Heizi did have the intention of killing for the sake of killing. She knew clearly in her heart that she could not just leave the institute for the sake of exchanging her father.

The same was true for the subsequent slaughter of birds.

In order to satisfy her desire to kill, she really wants to find someone suitable to kill or something.

Without Du Yiyi, Cheng Jiayi was unwilling to think about that aspect, and even deliberately avoided it in his heart. But now Du Yiyi has made the facts clear, and Cheng Jiayi has no choice but to face the facts.

Just as Du Yiyi said, Cheng Jiayi knew that she would not be unable to bear the blow of knowing the facts, she just subconsciously escaped.

She really fell in love with killing and the pleasure brought by killing.

Professor Yi Ran looked at her son in surprise. Even though she knew that Yi Yi had her own opinions, the observation was so meticulous that the nearly research conclusions she came to still complicated her feelings.

This requires how careful Cheng Jiayi is to discover these things that Cheng Jiayi himself has not noticed. When he thinks that Yiyi and Cheng Jiayi may really be in love, Professor Ran's heart is still sour.

But immediately, the identity of a medical worker replaced the mother's mind, and Professor Still whispered: "Maybe, this is not the case."

Du Yiyi and Cheng Jiayi both looked up at Sun.

Professor Yiran looked at Du Yiyi and said: "The environment can change people's thinking, the dependence of the people around them, the sense of responsibility, the atmosphere at that time, and the few words of the bystanders can all inspire some kind of impulse.

From the environment you are in, Jiayi's killing actions can also be attributed to the influence of the environment and the admiration of the people around you. From a psychological perspective, this age is the most susceptible to external influences and interventions."

Professor Yiran paused for a while, waiting for Du Yiyi and Cheng Jiayi to digest and understand.

Du Yiyi asked: "Mom, do you think that these things Jiayi did are not because of the influence of crystals?"

Professor Yiran said carefully: "There is no specific comparative experiment, and I can only tell you what I see, what you said."

Du Yiyi said laughing and crying: "Mom, don't be so cautious with us, Jiayi won't mind what you said."

Cheng Jiayi also showed a light smile: "Auntie, your opinions should be extremely useful to us, and we are willing to listen to your views."

Professor Yiran nodded: "Since that's the case, I'll talk about my thoughts, and start with the first time I saw you in the hospital."

Professor Yiran recalled: "When we met that day, everything was normal. I didn't know that you had already killed someone during the day. That day, Jiayi, have you hesitated when you killed someone?"

Cheng Jiayi narrowed her eyes and recalled: "At that time, when I was dragged into the room, I smelled bloody smell, and then... I probably didn't hesitate at that time."

Du Yiyi interrupted and explained to Cheng Jiayi: "Mom, Jiayi and I have read a lot of doomsday novels before, and we have also discussed them together. Mom, you don't know how dirty some men are written in those doomsday novels. In that situation at that time, if I had the intention to kill people."

Professor Yi nodded, but looked at Cheng Jiayi and said, "At that time, just because the man had a bloody smell at home, you first judged that there was a murder in his home.

Then the man's actions also showed bad intentions towards you, so, in fact, you had already made such a worst plan when you were pulled into the room by the man."

Cheng Jiayi thought about it and nodded.

"Facts have proved that your judgment is not wrong. The man killed his wife first, and he is the one who should be killed." Professor Yiran was worried that Cheng Jiayi would misunderstand his statement, so he affirmed it first and then continued:

"But it also shows that the time you killed someone was not affected by the crystal, it was the environment, the danger, and it prompted you to do what is most beneficial to you."

Cheng Jiayi and Du Yiyi both nodded slightly.

Professor Yiran continued: "You arrived at the hospital that night and then encountered a sudden change. I twisted my feet and carried me one by one."

Professor Yiran said, turning his head to look at Du Yiyi: "Yiyi, if I hadn't twisted my feet at that time, would you kill someone?"

Du Yiyi was stunned and said, "Yes, absolutely."

Professor Yi Ran nodded again: "Yes, in critical moments, people are often forced to stimulate potential. Especially if you have discussed what will happen after the end of the world, the content discussed in your subconscious will be confirmed to reality.

To be honest, I was really shocked when I saw Jiayi taking action, but I was also infected at that time... If it weren't for what Yiyi said just now, I wouldn't have thought of many things."

Du Yiyi pondered and said, "Mom, those two times were forced. If Jiayi didn't kill anyone, he would be killed."

Professor Yiran said: "Yes, it was indeed the case in those two times. Jiayi should break it and it would not only protect himself, but also protect you and me. Jiayi, after those two times, have you gained more confidence in yourself?"

Cheng Jiayi nodded.

"You and Yiyi have read similar novels before, and even if you don't believe in the content in the novel, you will still be affected in your subconscious mind, right?"

Cheng Jiayi nodded again.

"Then, you and Yiyi faced a house robbery together. Jiayi, there is a question I have always wanted to ask you, if my question offends you, would you just treat this as a medical worker's job?"

Cheng Jiayi looked at Professor Yiran in surprise and said, "Auntie, what do you want to ask me? Even if you ask, I have always admired you."

Professor Yiran shook his head and said, "You said that, I feel more and more that I shouldn't ask."

Cheng Jiayi didn't know how to answer, so she had to look at Du Yiyi as if she wanted help.

Du Yiyi said: "Mom, Jiayi won't care. Even if you are so polite, I feel awkward."

Professor Yiran smiled and said, "Okay, I'm not polite. Jiayi, can you tell me what kind of thought you were at that time and smashed those two people's heads by one to see if there are any crystals?"

After pausing, Professor Yiran continued: "Yiyi was still by your side at that time, and you were still a girl. Logically, you should either do it with Yiyi or let Yiyi do it by yourself."

Cheng Jiayi was stunned for a while. It was too long. She forgot what she thought about that day. Looking back now, she only had a vague feeling.

Yes, why did she do it herself? Isn’t she afraid?

"I, maybe I think I have killed someone." Cheng Jiayi murmured for a while.

"Yiyi also took action." Professor Yiran pressed.
Chapter completed!