Li Jin looked around and saw that no one was looking at them, so she lowered her voice, "So you can obviously let us ...... away."

Gu Qingyu quickly reached out and grabbed her arm to stop her from continuing, did she think that no one was really listening?

Not necessarily.

Li Jin was very smart, she didn't say anything more, just looked at him, and said what she thought in her heart, just when she found out what she had been thinking about, "Can I trust you?" ”

He was stunned for half a second and replied, "Yes." ”

His confident appearance finally gave her a little comfort.

"Don't look for it, I don't think I can find any clues about explosives." Li Jin specially raised his voice so that everyone could hear it.

Everyone stopped what they were doing and looked at her.

Li Jin explained, "The configuration of black powder needs to be accurately measured, and the slightest carelessness will have an impact, and the murderer must have been configured in advance, and he will shoot if he is sure, and these chemical components are impossible for us to find." ”

Hearing this, everyone felt that it made sense, Wang Er and Chen Rufan didn't want to do it for a long time, so they dumped the stall on the spot and quit.

Even Li Jin, who had been facing Gu Qingyu, spoke out against it, and everyone's eyes looked at Gu Qingyu, surprised and ridiculed.

They all thought that this policeman was just an ornament, maybe just a little white-faced hanger.

Gu Qingyu didn't have any expression on his face, he still looked light.

Li Jin continued, "If you really want to find it, it's better to find an introduction that can ignite black powder,"

"Introduction?" Everyone looked at each other in bewilderment.

"Yes, explosives don't leave traces, but primers do, because not every primer can be used." Li Jin nodded.

Gu Qingyu suddenly opened his mouth and asked, "So what do you usually use as an introduction?" ”

Li Jin pondered for a moment and replied, "Flammable." Liquids such as alcohol, gasoline, solids are things rich in fiber, such as cotton. ”

Wang Er finally couldn't help it, he was fed up with the reality of being commanded and directed, and in the end he didn't get anything, he said.

"Do you think murderers are that stupid? Do you have to leave the evidence on the spot? It's just a waste of time for us to look around. ”

Then, Wang Er looked down at the time again, "It's four o'clock now, and it's dark at seven o'clock, you still have three hours, do you want to continue to waste time here?" ”

In fact, not only Wang Er, but even the good-tempered Lin Qian also felt that after looking for so long and finding nothing, perhaps the murderer did not leave a trace at all.

Only Chen Rufan was okay, his expression was faint and he didn't resist so much.

The two girls were silent.