"Sister Zhu, you are joking again. Are you still thinking about the water heater?" Xiao Li thought about her insistence that someone had been here.

"I didn't think about it, maybe I was just blinded, haha!" Zhu Yan said haha.

"Sister Zhu, don't think so much. Just stay in the house and write a novel at night. Don't go anywhere. Lock the door and don't open it casually. If something goes wrong, call right away..." Xiao Li took the trouble.

"Don't worry! Brother, I have free bodyguards tonight." Zhu Yan said proudly.

Xiao Li sent Zhu Yan upstairs and watched her enter the door before leaving.

"Sister Zhu, don't be careless." Because he was not sure whether someone had actually sneaked into the villa, Xiao Li had to be careful.

"Don't worry! I know it well." She was still confident about her own safety. She had never felt that she was in danger.

Anyway, the little policeman is coming tonight, so you can mention it to him then.

When Zhu Yan entered the bedroom, the first thing she did was to use a telescope to observe the convenience store. Haha! She was almost voyeuristic. Zhu Yan laughed at herself.

The doors and windows of the convenience store upstairs and downstairs were closed. I remember that when I went out in the morning, Zhu Yan took a casual look and it looked like this. It seemed that the proprietress had not opened the door all day! It was so cold that it was still comfortable to curl up in bed!

Thinking of this, Zhu Yan really wrapped herself in the quilt and prepared to code. It was still early before dark, and earlier than 12 o'clock at midnight, so she had better seize the time to code!

The coding time really flies by! By the time one chapter is finished, it’s already dark and the room is dark.

Zhu Yan rubbed her eyes, turned on the light, and got used to it. Then she lay on the window sill, quietly lifted a corner of the curtain, and pointed the telescope at the convenience store.

The lights were on in the landlady's room, but the curtains were closed so nothing could be seen.

It's not yet 8 o'clock, and I don't know when the little policeman will come. Let's get something to eat first. Zhu Yan found a pack of biscuits and prepared to boil water to make coffee. I won't eat instant noodles tonight.

In the kitchen, Zhu Yan waited for the water to boil and subconsciously looked at the water heater outside the window.

Suddenly, there was another bang and the water heater started again.

What? Here we go again?

Although the technique is old, it is very effective.

Zhu Yan was still shocked.

There is really someone next door!

I stood in the kitchen with bated breath, thinking: Should I pretend I didn’t see it? Or pretend I didn’t see it?

Zhu Yan ran back to her room, took her mobile phone, and took pictures of the water heater outside the window. There are pictures and the truth. Now Xiao Li and the others won't say that my eyes are blurred, right?

Just as I was about to call Xiao Li, the water heater stopped again. Do you want to leave?

Zhu Yan walked quietly to the door and looked out through the peephole.

The three doors on the ninth floor are side by side, and the door next door cannot be seen at all. Zhu Yan can only see the elevator door opposite and the stairs next to it.

I quietly opened the door and went out, putting my ear against the door next door to hear if there was any movement inside.

Nothing was heard.

Wait...there seems to be footsteps?

What should I do? Zhu Yan's mind was racing, she ran upstairs quickly and hid at the corner of the stairs on the ninth and tenth floors.

The footsteps came to the door, and Zhu Yanxin said: Come on, come on.

The door to the next door opened, and a figure flashed out, wearing a hat and mask. He looked around and quickly went down the stairs.

Zhu Yan quietly came down, pressed the elevator button, and hurriedly

Called Xiao Li, "Xiao Li, there is really someone next door. I saw him going downstairs just now. I followed him. You guys come over here quickly. Let's attack from both sides."

"Don't be impulsive, Sister Zhu. You just stay in the room. You can't go anywhere. I'll be right over." Xiao Li over there was more nervous than she was.

"No, we have to catch him today,"

Zhu Yan made up her mind and entered the elevator. She went down to the first floor and chased out of the unit door. Not to mention anyone, not even a ghost outside.

Hey! Let him run away.

Zhu Yan was regretting that she came down late when she heard footsteps behind her, coming down from upstairs.

It turned out that I took the elevator and came down first, while the other person took the stairs a step slower.

Zhu Yan dodged and hid in the green belt nearby, quietly took out her mobile phone, pointed the camera at the exit and turned on the video recording function.

The man came out just after hiding. He was wearing black cold-proof clothing, a hat and a mask. His face could not be seen clearly, only his eyes were exposed. He looked left and right and headed in the direction of the fourth phase of the project.

Seeing him leave, Zhu Yan suppressed her heartbeat and wanted to follow him quietly, but she was scared to be alone. Why hasn't Xiao Li come yet?

When Xiao Li's sightseeing bus arrived, that person

It has gone out of sight.

"Quick, quick, he's going over there."

"Don't chase her at night, it's too dangerous."

Only then did Zhu Yan notice that there was another person on the sightseeing bus, Zeng Cheng.

"How did you get together?"

"Sister Zhu, when you called me, Police Zeng happened to be at the door and said he was looking for you, so he came with us."

Zeng Cheng: "What happened? I didn't hear anything from you this afternoon."

"It's nothing? It's just someone sneaking in next door to me."

"It's all our fault. Sister Zhu told us that we didn't pay attention to it. Fortunately, Sister Zhu is fine, otherwise...it's a pity that he escaped. There are no cameras at the stairwell and corridor, otherwise we can see clearly with the help of surveillance cameras."

"Is there surveillance over there?" Zeng Cheng pointed to the direction where the man disappeared.

"No. The fourth phase of the project over there has just started. There are only cameras at the gate and some main roads in the entire villa. Other places have not had time to install them. They will be added in the future."

Zhu Yan: "I did see him just now, but he was wearing a hat and a mask, so I couldn't see him clearly. But I have the video."

"Sister Zhu, you are so smart, he can't run away now." Xiao Li praised without hesitation.

"We'd better go upstairs and take a look first. Tell me what's going on in detail." Zeng Cheng suggested.

The three of them took the elevator and went upstairs. Zhu Yan told Zeng Cheng what he had discovered last night and what happened tonight. Hearing this, Zeng Cheng frowned.

After getting out of the elevator and looking at 903 next door, Zeng Cheng asked: "Did someone sneak into this room?"

"Yes." Zhu Yan nodded.

Zeng Cheng knocked on the door.

Zhu Yan and Xiao Li had the same idea: It would be great if someone could open the door.

After knocking for a long time, no one came to open the door.

"Do you have a key?"

"There is a spare key. Brother Wang gave it to me today. We have asked the owner for permission and are ready to come in and take a look tomorrow."

"Didn't I hear you talk about it?" Zhu Yan expressed dissatisfaction.

Zeng Cheng took the key and motioned for Xiao Li and Zhu Yan to step aside, and he opened the door.

"Wait a minute." Zhu Yan was startled.

The two looked at her and asked with their eyes why?

Zhu Yan quickly opened the door of her house, and when she came out, she had a kitchen knife in her hand.

No, Sister Zhu, took the kitchen knife again. Xiao Li was speechless.

Zhu Yan: "Be careful, in case there are accomplices inside!"

Xiao Li held the electric baton, and Zhu Yan held the kitchen knife tightly. With it in hand, she felt much safer.

The two of them stared at Zeng Cheng closely, one on the left and the other on the right.

Zeng Cheng showed off his police uncle's momentum, opened the door and rushed in. Zhu Yan and Xiao Li also rushed in.

The room was dark, but fortunately Xiao Li's baton was equipped with a flashlight, which could barely illuminate it.

"Turn on the lights".

Xiao Li found the switch and the room lit up.

The layout next door is the same as Zhu Yan's house, with kitchen, living room, balcony, two bedrooms and bathroom.

The three people looked around all the rooms. The furniture in the living room and the bed in the bedroom were all covered with dust cloths, giving the appearance of being uninhabited.

Zhu Yan focused on the kitchen and bathroom. Water heaters are needed in these two places.

There were no traces of tampering in the kitchen, there was a layer of dust on the stove and the chopping board, and the sink was dry.

Pushing open the bathroom door, Zhu Yan smelled a faint smell of smoke, "Do you smell it?"

Zeng Cheng: "Yeah! It smells like smoke."

Xiao Li sniffed hard and nodded, "It smells like smoke."

"Either this person is a heavy smoker and couldn't help but smoke after a while. Or he stayed here for too long. He sneaked in early and waited until Zhu Yan came back before he could take action.

Originally, he could have left no trace. He came quietly and left quietly, making Zhu Yan think that he could just be a dazzler. It was the smoke that exposed the presence of someone.

Zeng Cheng pointed to the sink, "Look, it's wet and has water stains. The nozzle is also wet."

There was the smell of smoke and traces of running water. Not to mention yesterday, at least it proved that someone was indeed here tonight.

"Could it be a thief? He came in from outside and prepared to steal something."

"If you were a thief, in such a big villa with so many uninhabited rooms, would you choose an occupied one next door to steal? Why don't you say he just came in to take a shower?"

"That's right. How can there be such a stupid thief?" Xiao Li scratched his head in embarrassment.

Zeng Cheng: "This man sat on the toilet seat and smoked while placing the nozzle in the sink, then turned on the switch, the water heater ignited the fire, and the water flowed away from the sink."

"No wonder, the floor in the bathroom is relatively dry. There are only a few water stains near the sink. How did you see that he was sitting on the toilet seat?"

"You see there is some dust in other places, but the toilet seat is clean."

"Well, that makes sense." Xiao Li also took the lead in agreeing.

"You go to my kitchen and let me turn on the water heater."

Zeng Cheng and Xiao Li ran to the kitchen of Zhu Yan's house next door. After waiting for a while, they heard a bang and the water heater was ignited and working whirringly.

The two turned back to the next door.

"Now you believe that what I saw last night is true!"

The two nodded, already believing it.

"If he wants to go upstairs, he must take the stairs instead of taking the elevator. Because there are no cameras at the stairs. If my guess is correct, there should be his footprints on the stairs."

The three of them came out and walked to the stairs. Sure enough, there were footprints on the stairs, some coming from below and some going down. They should have walked up and then down.

No one has lived in this building for several months, and the stairs have not been cleaned and have accumulated dust. In addition, it rained yesterday afternoon, leaving wet footprints on the stairs. Even after spending the night, the footprints are still very

obvious.

"Don't touch these footprints and rooms. I will report to the institute tomorrow and send someone to deal with it."

The three of them locked the door next door and returned to Zhu Yan's house.

Zhu Yan made coffee for them to drink.

Xiao Li said to himself while drinking coffee: "Why would he do this? He's not a thief, and there's nothing to steal in this house? He doesn't take a shower, and turns on the hot water for fun? Could it be that he sneaked in just to sit there?

Smoking a cigarette on the toilet seat? And he came in secretly, and others couldn't hide it. Instead, he lit the fire in a big way. Didn't this tell others that he was here? What on earth was he going to do? "

As Zhu Yan listened to Xiao Li's words, an idea flashed through her mind, but she couldn't capture what it was exactly.

"Zeng Cheng, you are worthy of being a police officer. Your analysis is clear and logical. It's easy to explain that the elevator is running without people. I will also learn to analyze it. Do you think this is the case?"

"We have now determined that someone has sneaked in. As for how he entered the villa, it can be ruled out that he walked through the gate. There is surveillance to prove it. The villa is so big, and there are some hidden routes to enter. This needs further investigation. This infiltrator

Shortly after I returned home last night, I entered Building 11 and pressed the elevator but did not go in. First, I might have thought that there was a camera in the elevator and he would be exposed, so I gave up decisively. Second, I did it on purpose.

It is to create a terrifying atmosphere of unmanned elevator operation to achieve the purpose of scaring people. I guess it is the latter. Does this make sense?"

"That makes sense."

Zhu Yan continued: "Tonight this person sneaked into 903 next door again and hid in the dark to observe. When the lights came on in my kitchen, he started to light the water heater. The purpose was to attract my attention and know that there was someone next door. Once I asked the security guard for confirmation, the answer

It’s obvious. If there is no one living next door but the water heater is on, and the elevator is running when no one is there, then the timid girl will think it is being haunted. What will happen? Of course she will run as far as she can in fear.

!”

Xiao Li laughed and said, "But Sister Zhu, you are quite courageous!"
Chapter completed!