The other party was very frightened, which made Cao Ziyan a little suspicious of Ren Xia's judgment, and felt that it might really be the property staff, so she cast an inquiring glance at Ren Xia.

That is, when Cao Ziyan looked at Ren Xia, her vigilance couldn't help but relax, and Ren Xia immediately shouted: "Be careful!"

As soon as Ren Xia's words fell, the other party suddenly struggled the ground, and then turned around suddenly.

Cao Ziyan's gun was originally against the back of the opponent's head, but when the other party suddenly turned around like this, Cao Ziyan had no defense at all, and naturally the muzzle of the gun deflected away and pointed at the ground.

At the same time, the other party reached out and took out a pistol from his arms, and he was about to shoot back at Cao Ziyan.

Ren Xia has been watching the other party's movements, that is, at the same time as the other party suddenly turned around, Ren Xia got up and rushed over, flying up and kicking the opponent's wrist with a gun.

Cao Ziyan did not guard against the other party's movements, and the other party did not guard against Ren Xia's movements, so the pistol flew out of his hand.

Immediately afterwards, Ren Xia punched the opponent's temple, and the opponent rolled his eyes and passed out.

All this happened too fast, Cao Ziyan was still stunned, and the battle was already over.

Ren Xia snapped his fingers at Cao Ziyan: "Handcuffs!"

Cao Ziyan really had a handcuff on her body, so she immediately took it out, cut the other party's hands back, and put it on the handcuff.

"Originally, I thought that you could do it alone, but I didn't expect to have my help. Ren Xia shrugged: "I'm a little disappointed in you!"

Cao Ziyan gasped: "How do you know that there are people outside?"

"It's very simple...... Ren Xia smiled: "This is a top-level mansion, all kinds of security equipment, and it is still very in place." ”

There is a camera outside Ren Xia's house to monitor the movement in the corridor, which has been mentioned earlier.

At present, the development of camera technology is not only the retention of shooting images, but also has more powerful functions, such as dynamic monitoring.

After Ren Xia returned home, he turned on dynamic monitoring, as long as there was a slight movement in the corridor, the camera was silent on the surface, but it would send a warning to Ren Xia's mobile phone and transmit images at the same time.

This function is so useful, because no one can stare at the camera 24 hours a day, and the terminal APP on the phone cannot always be turned on to see if there is anyone outside.

In other words, the killer just appeared in the corridor, although he didn't make a little movement, but Ren Xia already knew about it.

And the camera position is very hidden, there are voice-activated lights in the corridor, and no one will notice the camera if the lights are not turned on, even if the lights are turned on, it is not easy to find.

When Ren Xia was talking to Cao Ziyan, the mobile phone was always placed next to him, and as soon as there was a prompt, Ren Xia noticed that a stranger appeared outside the door.

So the question is, Ren Xia knows that there are people outside, how can he conclude that it must be a killer?

This requires logical reasoning, first of all, Ren Xia's family usually does not come to the guests, and the only people who can go upstairs are express delivery or property staff, and Ren Xia does not have any express delivery and no ordering, if it is a property staff, it must be two at the same time. In these years, there are often various disputes between the property owner and the owner, and if there is only one person, some things are difficult to deal with. Ren Xia has long observed that if the property of Guanlan Mansion is looking for the owner, it must be more than two people, in case there is a dispute, it is not clear.

Neither fast delivery nor property staff, then it must be a bad person.

"I presume it's a killer ......" Ren Xia smiled and told Cao Ziyan: "Actually, it may not be, but no matter who it is, it is definitely not a good person!"

"Understood. Cao Ziyan also smiled: "To put it simply, no one usually comes to your house, as long as someone comes, you are not a good person!"

"Let's just say that. Ren Xia bowed down and carefully searched the killer, but found nothing: "There is no identity document, and there is no item that can identify him, except for weapons, a little pocket money and clothes on his body, there is nothing else...... Sure enough, it's professional. ”

Cao Ziyan made a phone call and called for reinforcements, but she had to wait for a while for the reinforcements to arrive. So, Cao Ziyan wanted to interrogate first, and raised her hand to pat the killer's face: "Wake up!"

The killer snorted, opened his eyes leisurely, and looked at Cao Ziyan with a sneer, his eyes gradually began to focus.

It was at this time that Ren Xia suddenly thought of something, stood up and kicked the killer's temple, and the killer rolled his eyes and passed out again.

"What are you doing here?" Cao Ziyan was taken aback by Ren Xia's movements: "He has no ability to resist now!"

Ren Xia smiled and asked, "What do you want to do, conduct an interrogation?"

"Wouldn't it be better if we asked for some clues before I arrived. ”

"You're thinking too simply. Ren Xia turned around and went to the kitchen, and when he came back from the kitchen, he had an extra fruit knife in his hand: "Although he has no ability to resist now, he has the ability to commit suicide." ”

"How do you kill yourself? bite your tongue and kill yourself?"

"You're thinking too simply. Ren Xia smiled and shook his head: "Biting his tongue and committing suicide is actually just a plot made up in third-rate novels, if a person really bites off his tongue, he will only feel severe pain, but this act itself will not endanger life." If someone really bit off their tongue and died, it was only because there was too much bleeding in the mouth, which poured into the lungs and caused suffocation and then died of lack of oxygen, in other words, they were actually drowned by their own blood. ”

Ren Xia was talking At the same time, he poked the fruit knife into the killer's mouth, Cao Ziyan didn't understand: "What are you doing here?"

"You just have to watch. Ren Xia slowly moved the fruit knife to explore the killer's teeth, and suddenly found that there was a tooth that was particularly large, so he used the fruit knife to pry this tooth off. In fact, there is no problem with this tooth itself, but there is a braces on the outside, Ren Xia pried off the braces and threw them to Cao Ziyan: "It must be good, don't break it." ”

The appearance of this braces looks no different from ordinary teeth, Cao Ziyan doesn't understand: "What is this for?"

"It's filled with *, it's highly poisonous, as long as it is bitten, it can kill ......people in more than ten seconds," Ren Xia said while checking the killer's other teeth, and finally found no other problems: "Professional killers often wear such braces, and if they miss and are caught, they will bite the braces and commit suicide." That's why I said he had the ability to commit suicide, and he hadn't come to his senses just now, otherwise you'd just be dealing with a corpse. ”

Cao Ziyan's hand holding the braces trembled a little: "This ...... Poisonous?"

Ren Xia smiled and asked, "Are you scared?"

"Of course I'm not afraid!" Cao Ziyan shook her head vigorously: "I'm ...... Well, I'm actually a little nervous, and although I've solved quite a few cases, this is the first time I've encountered something like this!"