"What?" Zheng Gangtie questioned again in that tone full of question marks: "The sound of knocking on the head? You don't mean that you can tell from the sound what force, speed, and even the material of the knocking,

Please, you are not a computer, are you having sonar in your ears?"

"Of course not." Zhou Yan said: "It's just that, I feel that there are some contradictions in the gaps between various sounds."

"Ah?" Xiaogang obviously didn't understand.

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"For example, when a person is knocked out, there are usually two situations.

The first type: After the brain is hit violently, it quickly faints without any reaction time. This situation requires a huge force and is very rare.

The second type: After the head is hit hard, it takes about half a second to one second to make the brain protective mechanism work before the person faints.

To be clearer is...

The first one is to faint on the spot.

The second type is to faint in one second.”

"Stop and stop!" Zhou Zhenggangtie really didn't want to interrupt Zhou Yan, but he couldn't hold it in: "Are you really mentally ill? There is only one second between these two situations.

Do you still want to use this as an argument for the gap?”

"Yes!" Zhou Yan said with certainty: "Because at that time... I didn't hear the sound of the electric drill when this person was 'smashed'."

"Ah?" Zheng Gangtie frowned. He did not follow Zhou Yan's idea.

Zhou Yan continued: "Imagine that at that time, the criminal was holding an electric drill and threatening me in front of me. At this time... a wrench hit him directly from the back of his head. What would happen to him?

”

"He will..." Liu Zhiyuan stretched out his hand and made a move with the electric drill, then suddenly realized: "He will subconsciously pull the switch!"

"Yes!" Zhou Yan added, then pointed to the electric drill on the ground: "The model of this electric drill is the most common type on the market. Except for the front end, it is a spiral iron pillar, which is very similar to a pistol, and the switch is

Designed to be similar to the [trigger] style.

For safety reasons, there is a small guardrail outside the trigger, which leads to the fact that if you want to pull the trigger, you must put your finger into the guardrail.

At that time, the criminal threatened to drill my tongue, and his fingers were pulling the trigger from time to time to make me nervous. So, his fingers were always stuck in the guardrail.

When a person is severely injured in his head, he will definitely feel pain, and his muscles will definitely be tense. His fingers are so close to the switch of the electric drill, and he will definitely touch the switch uncontrollably.

But...I didn't hear any sound from the electric drill!"

"This..." Zheng Gangtie was stunned for a moment, but he still wondered again: "Okay, although something is wrong, but so what? You didn't say that when a person is hit by a head, there is also a

I didn't react in an instant, and I fainted directly?! So, this cannot be considered a suspicious point!"

"Okay~" Zhou Yan smiled: "Of course this is not the only suspicion that I suspect that Li Lei is the real murderer, but let's finish this suspicion first.

I think the reason why the electric drill didn't sound at that time was because Li Lei's fingers were really broken.

In order to pursue the authenticity of the entire scene, he tried his best to break his knuckles. This also caused him to make a "wrench hit the head" while holding the electric drill.

And when it comes to head-smashing...

This is another doubt.

At that time, the 'criminal' was standing in front of me, judging from the voice, his head was probably in this position."

Zhou Yan stretched out his hand and measured the shape of a head in front of him.

"Li Lei's left hand was broken, so he definitely couldn't hold the wrench with his left hand, so at that time he held the wrench with his right hand. The biggest force point should be on the right side of the 'murderer's head, and he used all his strength to do it

, In this way... how can I pass the wrench."

Zhou Yan held a wrench in his hand and learned it very well.

"But... the murderer's big bag is at the back of his head... This is very strange."

"Why are you always trying to get these details?" Zheng Gangtie shouted dissatisfiedly: "Even if you swing the wrench from the side is very hard, but how could Li Lei care so much about the situation at that time? Maybe he just thinks,

The back of the head is relatively crisp, so I hit the back of the head. Isn’t this an easy thing to explain... Brother Li Lei, don’t give this guy face, you can say a few words yourself!"

When Li Lei heard this, he seemed to have recovered and looked at Zhou Yan anxiously and said, "Yes, I was very scared at that time, so I just smashed the back of my head. At that time, the murderer was approaching you with an electric drill, and I was also very

I'm in a hurry!"

But before he finished speaking, Zhou Yan waved his hand immediately: "No, no, no, you misunderstood. I am not saying that it is wrong to smash the back of my head, but... the direction of the corpse is wrong."

"What...what..." Zheng Gangtie said disdainfully: "Direction?"

"Yes, isn't this obvious?" Zhou Yan said, pointing to the so-called murderer lying on the ground: "Think about it, this man was holding an electric drill and slamming me at the mouth, and that electric drill was

It's near my face!

If you stand behind the criminal, do you dare to pat the back of his head?

You're crazy!

The strength of your surrogate patrol must have been so hard that the bag behind the criminal's head also confirmed this, but if that were the case, the criminal's body would directly pounce forward due to the force!

What about me?

Think about that position... Ninety percent of my head will be directly penetrated by an electric drill!

If it were you, in that case, would you dare to take pictures?"

"This..." Zheng Gangtie questioned Zhou Yan from beginning to end, but this time, he did not refute because he put himself in his shoes and thought about it. If he was Li Lei, that situation would be true.

I dare not take action.

Zhou Yan's words continued: "And, look at the position of his head being smashed, it is obvious that Li Lei raised the wrench high above his head and then smashed it violently... This way of exerting force

The criminal's body actually fell to the side, which was simply impossible."

"But...but I don't know why this is happening. I'm really just a victim!" Li Lei's expression became more and more nervous.

"Yes, Brother Zhou Yan, Li Lei is also a victim." Liu Zhiyuan seemed to want to argue with Li Lei: "And if he is really the mastermind behind the scenes like you said, then he must be very smart

Ah, I can definitely think of the direction of hitting my head!"
Chapter completed!