Gu Qingyu just glanced at him lightly, and asked coldly, "You don't even know how the murderer committed the crime, and you still expect to catch him?" ”

"Is there too much time? Wouldn't it be dangerous if we didn't know who he was before dark? Chen Rufan said.

Gu Qingyu snorted from his nose, "If you continue to talk to me, it's even slower when it's dark, right?" ”

Crowd, "......"

Lin took advantage of it and said, "Isn't it faster to find them separately?" ”

Gu Qingyu nodded, "Can't wait to die before it gets dark?" ”

Lin Qian, "......"

"Everyone, no one is allowed to leave our line of sight, you have to make sure that no one is left behind, and we are safe." Gu Qingyu said with a solemn expression.

This is the most important point.

The first thing to look for is explosives that destroy the power brakes and signals.

In such a short period of time, it is impossible to leave nothing, not even a little scum left, there must be some clues left.

However, even if everyone turned this place upside down, they still did not find a trace of chemical composition.

Gu Qingyu just said, "Keep looking." After a pause, "Miss Li, come with me." ”

Wang Er saw that he was like an uncle, so he didn't get angry, and in order to cause unnecessary trouble, Lin Hao hurriedly dragged him away.

Li Jin walked next to Gu Qingyu, who was looking at the broken electric switch.

Seeing her coming, Gu Qingyu stared at the electric switch, "You say, how was it destroyed when no one was there?" ”

Li Jin just replied lightly, "I can be 100% sure that it is the ingredient of black powder in explosives, but I don't know how it can be used without people." ”

"How do you usually use it?" Gu Qingyu asked.

Li Jin quickly replied, "The oxygen released by saltpeter or potassium nitrate causes charcoal and sulfur to burn violently, instantly producing a large amount of heat and nitrogen, carbon dioxide and other gases. Due to the rapid expansion of the volume, the pressure increased violently, and an explosion occurred. ”

"How can you oxidize potassium nitrate?"

Li Jin frowned and looked at him, a little puzzled, isn't this common sense? "There's oxygen, ignite, won't it explode as long as it's oxidized?"

Gu Qingyu looked at this pile of rags and couldn't take his eyes off it, Wang Er looked at it and laughed mercilessly, "You can't see a flower anymore, no one ignites it, it can't explode on its own." ”

"Mr. Gu." Li Jin suddenly looked at him with a complicated expression. "Are you really sure?"

Gu Qingyu was silent for a long time.

Li Jin felt that she didn't know how to react, she had always been apprehensive, and she actually didn't trust him in her heart, but she couldn't help but follow his steps.

If.

It's really dark.

What should I do if I haven't found the killer yet?

She was confused.

Death, fear?

It's scary.

"Miss Lai." Gu Qingyu's voice was very calm, "Everything in the villa, the murderer knows everything well, he arranged everything perfectly, but the only variable that he didn't expect was me." ”

Gu Qingyu met her dark and bright eyes, he looked directly at her, "He didn't expect a policeman to appear in the villa, although I am nothing in his eyes now, but no one knows the murderer better than me." Do you know if he'll continue to run away like a rat crossing the street, or will he kill people desperately and continue to search for that perverted thrill? ”

Li Jin was shocked by this question and muttered a reply, "I ......"

"If it were you, what would you do?" Gu Qingyu asked.

"I'm not going to be like that." Li Jin didn't look at him.

Apparently she didn't want to answer that question.

Gu Qingyu was silent, and after a moment he said, "He will stay and continue to kill." It's like taking drugs, now he is just the first taste, he feels an unprecedented pleasure, and he won't stop. ”

Li Jin only felt a chill down her spine.

"So, knowing that he will continue to kill, do you think I will let him go?"

Gu Qingyu's demeanor when he said this seemed to freeze at this moment, he was so arrogant and arrogant. It never lingered in her mind again.