"This camera can monitor even in the dark. You can put it on the opposite side of your door." Li Jia pointed to a small hole in the opposite wall.

It's probably because the residents have entered the house through wires and so on that they have left the wire hole. The position is on the high side, but it's a good place for monitoring.

Li Jia looked around and found that the sight here was barely enough. She opened a window at the corner of the corridor on each floor.

Because these windows are public places, there are no residents to install any protective measures, or do not know how many years ago when the building left blank.

Li Jia's eyes flashed. When Xia Yuchen stood on tiptoe with the camera, she quickly pressed a pinhole camera in another direction.

Sometimes, angle is very important.

It's the same as misplaced kissing. Sometimes when you look from one direction, two people are kissing, but in another direction, you will find that in fact, nothing happened to two people.

Just in case, Li Jia kept an extra eye.

After Xia Yuchen placed the monitor, when she turned around, Li Jiazheng looked down at the low window of the blank. Most of her body looked out.

"The windows here are very low. Originally, they were for ventilation, but now nobody cares. Be careful not to fall down." Xia Yuchen warned.

Li Jia takes her eyes back, and the strange light in her eyes flashes away. She looks back at Xia Yuchen standing on the third floor. Looking up from the bottom, Li Jia seems to have a flash in her mind.

"I saw some old people playing chess downstairs," she said with a quick smile

"The communities here have been for some years. Many old people live here. They have no recreation, so they will play chess together." Xia Yuchen said with a smile.

"The stairs of this building are narrow and steep. Be careful when you come down. If you roll down, a gravitational acceleration will fall from the open window." When Li Jia spoke, her tone was flat.

Xia Yuchen didn't know why, but his back was cold, and his movements to go downstairs were stagnant.

Li Jia didn't seem to see it. She pointed to the stairs. "I don't know if half of the building is left unattended. How come there isn't even a handrail on the stairs? I only dare to walk up and down the stairs against the wall."

"Is it?" Xia Yuchen's smile is a little reluctant, but also a little disappointed. "The people who live here are not very well-off. They don't have the money to manage these things. I'm used to it when I come here so many times."

Li Jia nodded and didn't stay much.

"The monitoring system has been set up. I'll go downstairs and find a place to eat. I'll come back to collect things in half an hour. You can call me if you have anything. Don't worry. The eldest lady of Wu family and your sister are girls. Nothing should happen. Don't worry." Li Jia laughed, pressed her backpack and quickly went downstairs.

As she said, people who go upstairs and downstairs all lean against the wall. Maybe the old residents are used to it, but for those who first see this kind of stairs, they are subconsciously cautious.

This place is in danger.

Li Jia went downstairs. After saying goodbye to Xia Yuchen who sent her down, she didn't go out to eat. She thought of the scenery she had just seen from the window and walked along the old path of the community.

It's true that there are too many old people and children in this community. When Li Jia is walking here, she often meets children who are fighting. Occasionally, an old woman carrying a plastic bag full of vegetables passes by her.

Li Jia walked along the path and quickly found the opposite building she had just seen from the window. She calculated the distance and height, and went out from the community, separated by a section of concrete road.

Opposite the cement road is a simple five story office building.

When Li Jia slipped into the office building, the security uncle on the first floor was still playing with his mobile phone and didn't even lift his head. Li Jia went upstairs easily.

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