187 Lushan alley.

Lu San lane is more quiet at night.

At more than 11 p.m., every family is closed, and even those with old people at home have gone to bed.

Cheng Yi parked her car in the parking lot of the mall opposite.

She stood alone across the street, looking at the small shop at 187.

A police seal was pasted on the rolling shutter door of the store, surrounded by a yellow cordon.

Cheng Yi silently analyzes the road conditions. Last night, if she came to kill, where would she cut in and retreat

She just stood there quietly.

The brain has constructed a 3D picture of all the streets around her. She has walked roughly once just now.

How can we go up to the second floor without breaking the lock and being caught by the monitor?

Did the victim open the door for the murderer?

If someone knocks at the door in the middle of the night and wants to buy something, will it open the door?

Scene simulation has appeared in Cheng Yi's mind.

She saw herself standing outside the rolling shutter door and patting it loudly.

incorrect!

This aluminum rolling shutter door, as long as it rings, makes a lot of noise. There is no reason why people around can't hear it.

Cheng Yi silently comes to the back of the house. She deliberately bypasses several monitors.

In the process of walking, she found that only three of the monitoring along the way could be used.

You can easily get in through the back door.

The window on the second floor is not high.

The neighbor's backyard is full of soy sauce jars and sundries. Go up from here

Cheng Yi wants to try it himself.

So he turned into the backyard of the house.

She stepped on the sauce jar and flipped into the house from the place where the sundries were piled.

At night, she looked like a ghost and disappeared in a flash.

Cheng Yi thought: this place is not high. Anyone with a little strength can turn in.

In order not to damage the scene, she was very careful when she went in, and behind the window was the sofa. When she came down from the sofa, she saw the moonlight and found that there were other footprints besides herself.

Very new footprints.

Someone?!

Cheng Yi's face became serious.

At this time, someone came in, either to inquire about the situation, or the murderer returned to the scene again.

She took out the steel knife from the scabbard at her waist, held it in her backhand and tiptoed to the bedroom step by step.

Stop by the bedroom door and hear the sound of searching inside.

The killer came back to destroy the evidence?

Cheng Yi calmed down a little, turned around suddenly and flashed into the room.

Sure enough, there was a tall man with a mask and gloves. He was bending over and looking for something on the bedside table.

Cheng Yi arrived behind him accurately, and the knife hit the main artery of his neck.

She took a deep breath.

She rolled her eyes at once. Without asking more, she punched the man angrily.

"Mu sifan, are you bored? Why are you always doing so many things?"

Cheng Yixin decides, but his anger rises.

Wearing a mask, a cap, sportswear and gloves, mu sifan felt perfect.

How did you recognize it?

He ate Cheng Yi's stuffy fist, bent down in pain and cried twice.

Suddenly turned around, the moonlight fell on Cheng Yi's cold face, and the steel knife in her hand was cold.

I wanted to pretend to scold her, opened my mouth and sneezed.

Fortunately, I was wearing a mask, otherwise I would be embarrassed to death.

"Are you sick?" Cheng Yi pointed the knife in his hand and said coldly, "you'd better explain, otherwise I'll call Gu Xifeng immediately and catch you as a suspect."

She raised her cell phone.

Mu sifan is strange. Does she have the special function of a police dog?

How do you recognize people from behind in a dark place.

"When you do bad things in the future, don't use so many fragrance products, kill people, go back and take a bath, OK? Don't come out to do things just after taking a bath!" Cheng Yi took off his mask.

Mu sifan said, "don't..."

"No face?" Cheng Yi raised her chin and stared at him. "What are you doing here?"

"You have no face to see people. I have a cold. Take it!" Mu sifan ignored the knife in her hand and grabbed the mask.

He put on his mask and sat by the bed.

"This morning, I found the address here in secretary Yang's relics. I guess he must know my personality and can't let him go easily, so he didn't hand over the real USB flash disk. He probably stayed here in exchange for my last respect and let me take good care of his grandfather and other family." he said slowly.

With the moonlight on his back, his face was blocked and his eyes were completely invisible.

"Who knows if what you said is true or false." Cheng YILENG snorted.

"I'm here now just to take a chance if I can find the USB flash drive..." Mu sifan said only half of his words.

Cheng Yi filled up the next half for him: "if you find it, you can continue to threaten me."

"Can you stop thinking so badly of me?" said Mu sifan. "Can't you think I'm really helping you?"

Cheng Yi shook her head and didn't believe it.

People like you don't do meaningless things.

Secretary Yang has been with you for so long that you can throw him out to feed the dog.

Mu sifan's face also showed disdain: "forget it, you ruthless smelly woman, what I tell you is useless, hum."

He seems to have really caught a cold.

His nasal voice is very heavy, not like his usual voice.

Even if abused by him, it's not so harsh.

"That's it." Cheng Yi sinks his eyes.

"What are you doing here?" Mu sifan said, "destroy the scene? Guilty, come and help your accomplices remove the traces?"

Cheng Yi raised her eyebrows: "do you think my accomplice did it?"

This is not SR's technique.

None of their carefully planned actions has gone too far. They can be designed as an accident, so that the police can find a substitute every time.

And this time.

It looks too hasty, like a temporary intention.

"I can't get rid of you anyway," musfan said.

Cheng Yi picked her eyebrows, looked at mu sifan's feet and said, "if I were you, I wouldn't sit here."

She went to the window, drew the curtains and took out a special light source to detect blood from her backpack.

At mu sifan's feet, the shape of a large pool of blood was exposed there.

Mu sifan gets up quickly and walks to the door. Cheng Yi follows him, and so does the door frame.

That's evil.

Mu sifan scolded and went outside.

Cheng Yi also followed out. Along the blood, she went to the kitchen and found that the place where the kitchen knife was placed was a complete set of knives, except for a bone chopping knife.

"Nine times out of ten, the murder weapon is a bone chopping knife." Cheng Yi said, "the murderer's original intention is not to kill, but to kill should be temporary."

"How do you know?" Mu sifan said, "if you see the lack of a bone chopping knife, you say it's a murder weapon or a bone chopping knife. What if people didn't buy it?"

Against the background of the light source, Cheng Yi's smile is a little scary.

"Look at this chopping board yourself." Cheng Yi said, "there are old people and children of several years old at home. It's impossible not to cook without fire. Look at the range hood in the kitchen. Even the fruit knife is matched, but the most practical bone chopping knife is lost. Do you think it's possible?"

She looked at mu sifan with the eyes of caring fools.

Mu sifan still disdains it. Suddenly, Cheng Yi takes out the kitchen knife in the scabbard and throws it out with his backhand.

It happened to be mu sifan's position. He didn't see it clearly. He was so scared that he hid aside and almost didn't break his leg.

After he was embarrassed, Cheng Yi looked at him with a smile, still holding a knife in his hand.

"Cheng Yi, do you know that it's against the law to scare people to death?" he roared.

Cheng Yi wears rubber gloves and doesn't worry about leaving fingerprints. She easily puts the kitchen knife back.

When he came to Mu sifan, he didn't care about him. Instead, he touched the door frame next to him, where there was a knife mark.

Under the knife marks, there was a large pool of blood.

"I see," Cheng Yi said.

"What do you see?" musfan asked.

"The victim woke up in the middle of the night and went out of the room to go to the toilet. He just stood here and found the murderer. Before he could make a sound, the murderer turned around and a bone chopping knife spun rapidly, cutting his artery with unparalleled accuracy. Finally, it was nailed on the door frame, and the blood splashed everywhere... While the victim helplessly covered his throat and sat on the ground... He couldn't make a sound anymore Sound... "

"All right, stop talking." Mu sifan listened to the description as if he smelled the smell of blood and wanted to vomit.

Cheng Yi doesn't care about him. He feels the trace and is stunned.

This strength, this depth

Something seemed to flash through her mind. She seemed to have seen it somewhere, but she couldn't remember it.

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