Wang Zhao was also confused.

After many years of police work and countless cases, it was the first time he had encountered such a strange situation......

The rampant murderer is also quite rare, even more than ten or twenty years ago, when criminal gangs were far more rampant than today.

After a few seconds, Wang Zhaocai swallowed his saliva and asked, "Team Su, what should I do now?" We ......"

"Exit first, the first priority is to ensure your own safety." Su Ping shook his head lightly, and motioned for Wang Zhao to go out with him.

Of course, saving people is also important, but you must talk about methods, if you put yourself in, then everyone will be in trouble. Only by ensuring one's own safety can one have the ability to help others.

Wang Zhao also knew this reason, so he slowly retreated with Su Ping and joined Qi Yuan at the door.

Qi Yuan breathed a sigh of relief at this time, and then asked, "Team Su, Brother Wang, what is the situation here?" ”

Su Ping glanced at Wang Zhao, and Wang Zhao roughly told him what he had seen.

Then Su Ping glanced at him secretly, with a little expectation in his eyes, as if he was expecting his peculiar brain circuit to give some new insights.

It's a pity that Qi Yuan also looked confused this time.

Seeing this, Su Ping was not disappointed, after all, he didn't have much to look forward to.

……

The advantage of a small county town is reflected in the fact that it is very fast to call people. In about five minutes, the ambulance arrived downstairs, and at about the same time, colleagues from the special police team and the criminal investigation team also came.

They also brought many gas masks, as well as stab-proof suits. There are also several sets of spare ones in the bulletproof vest car.

Two special police officers carefully escorted the medical staff into the room, and carried Captain Chao and the other three out to the hospital for treatment.

Fortunately, the vital signs of the three are relatively stable, and there should be no danger.

After sending them away, Su Ping breathed a sigh of relief.

Then the criminal police carefully inspected the entire room.

"Obviously, this is a case of murder." Wang Zhao pursed his lips and said, "This family of five, four people were killed. Except for Tong Haojie, the captain of the third squadron, the rest of the family members died......

Judging roughly from the corpse, the deceased ...... Alas, I don't know much about forensics, I can only look at some superficial things, knowing that they all died of sharp weapon injuries, it should be daggers or something, there are more obvious traces of struggle at the scene, but I can't see more specific. ”

Qi Yuan then answered: "Team Su, this is revenge, right?" Revenge killing, the object of revenge should be this Tong team......

It's just that why is he being targeted by the murderer? Was it the criminal gang that committed the crime? Or is it someone else? This case also includes the gas leakage, ignition and explosion of the conference room, as well as Xintian...... and the murder of An Zhihe, do these cases meet the conditions for joint investigation? ”

"It's not clear yet." Su Ping shook his head slowly and said softly: "This case is ...... This case can be said to be the biggest challenge we have encountered in recent years, and the safety of life cannot be guaranteed at all, and the danger is real.

Xiao Qi, one last reminder to you, it's ...... for you to quit now."

"I'm not going back." Qi Yuan smiled and shook his head: "I know, human beings are animals who like to find a plausible reason or excuse for their behavior.

If I quit this time because of inexperience or something like that, I'll face that next time...... I think I'm sure I'll find some other reason to back off. To be honest, I'm scared, but I don't want to be a coward. ”

Su Ping snorted: "That...... Protect yourself and don't hold back. ”

"Understood." Qi Yuan replied immediately.

Su Ping's eyes fell on Wang Zhao again, and asked, "What about other aspects?" Did you find anything? Like what...... How did those two colleagues pass out? Did the suspect return to the scene? ”

"These are still being investigated, and there may not be results for a while." Wang Zhao shook his head and said, "But the reason why Team Chao fell into a coma is basically clear.

The equipment in that room is very simple, it is a converter.

Relatively speaking, the home circuit can be regarded as "high voltage and low current", of course, this is only relative, and the function of this converter is to change the voltage and current, and change the form of electricity to low voltage and high current under the premise that the maximum power is still maintained within 3,500 watts......"

"That's not right." Su Ping frowned slightly, shook his head and said, "Unreasonable." After studying junior high school physics, I know that in most cases, the electric shock that occurs is connected in series with the circuit......

In the case of Lao Chao, only the back of the neck touched the line, which was actually equivalent to connecting himself to the line.

We might as well simply think of the human body as a pure resistive circuit. A purely resistive circuit is connected in series on a single wire...... Junior high school physics taught us that there will be no electric current passing through the human body, and naturally there will be no electric shock.

To go a little deeper, one of the important reasons for the generation of electric current can be understood as the voltage difference between the two ends of the object involved in the circuit.

This kind of low-voltage high-current circuit, the wire resistance is very small, not to mention the width of the neck, even if it is one or two meters apart, it will not produce an obvious voltage difference, far from enough to damage the human body.

Unless...... What kind of high-voltage and high-resistance line is it, then the human body is connected in parallel, and it may also cause the current to pass through the human body and cause electric shock. ”

After a pause, Su Ping shook his head and said, "So...... I don't think Lao Chao should have been in a coma caused by an electric shock, there should be another ......."

"Well, that may be my misjudgment," Wang Zhao scratched his head: "That device may not be a converter but a transformer......"

"Huh?" Su Ping frowned: "You mean...... Hell, you're not sure if that device is a transformer or a converter? ”

Wang Zhao smiled wryly, a little embarrassed: "The professional colleagues in this area haven't dismantled it yet, I just looked at the structure and the instruction manual, plus I remember seeing this knowledge before, saying that low pressure and high flow within a certain range are more damaging to the human body than high pressure and low flow......

I thought again, although household electricity is actually enough to kill, but it is still impossible to make people pass out instantly without saying a word, so I thought that this thing should be an inverter...... But when I heard what you said, I found that I thought something was wrong, and this thing could be a transformer. ”

Su Ping glanced at him: "When did you learn to take it for granted and draw conclusions?" Take a guess to 'define' the role of the item suspected to be the murder weapon at the scene, yes. ”

Wang Zhao scratched his head.

After saying a few words to him, Su Ping sighed lightly again, and then shook his head: "Okay, I know you are also under a lot of pressure...... But remember, no matter what, don't rush and don't mess around, lest you derail the whole direction of the survey. ”

"Got it!"