Qin Gang called the property management and opened the door of the rooftop of the building.

"There are usually no people on the rooftop, and there were residents who used to build flower shelves on the roof and build pavilions privately, but later the city issued a policy that did not allow any private construction on the top floor of the building, and all of them were renovated once."

Li Yi looked around, and there were still bedding such as quilts, sheets, towel blankets, etc., which residents were drying on the roof of the building, "You can come up and dry things." ”

"The flower shelves and gazebos have been demolished, but the residents want to dry something on the roof, this doesn't seem to be illegal, and we won't care."

The property manager smiled awkwardly and pointed with his finger, "There is still half of the pillar left over from the pavilion built before." ”

Li Yi also smiled, "I'm not a chengguan, just come up and take a look, didn't the residents of 3001 enter the thieves a few nights ago, I care about this, then now the door of the rooftop, in addition to your property has a key, who else will have a key to come up." ”

"In the past, the door was locked with an iron general, only the residents on the top floor and we had the key, and then it was not renovated, the roof of the building belongs to the public area, so the door was replaced, and the IC card was installed that kind of induction lock, as long as it was the residents of this building, it could be brushed open."

Li Yi pulled the door open, then let go gently, the door slowly popped back, and finally locked it with a magnetic click.

"Normal entry and exit, the door will be automatically locked, which means that this door will always be locked, right?"

"Usually it is locked, but it is not excluded that some residents come up to dry things, for convenience, when going out, the door will be stuck, and the magnetic attraction can not be locked.

"Unrelated people? It doesn't matter what kind of personnel counts, how to define this. Li Yi asked.

"Well, this is actually not written in black and white what is called irrelevant personnel, generally in the concept of our community management, residents who are not residents of the community are considered irrelevant personnel, such a large community, there are always friends and relatives of residents who come to visit, or deliver takeaways and water, they are considered irrelevant personnel." The property management carefully explained.

"We're not involved." Li Yi laughed.

"Yes, yes, conceptually, but you should have something special. Besides, if the door is properly locked, you will also need us to be present to enter the rooftop, and if the residents can have this awareness on weekdays, check that the door lock is not locked when they leave, where will happen that night. ”

Li Yi knew that the door of the rooftop must have been unlocked that night, so that the thieves had the opportunity to enter the rooftop and wait for the opportunity to commit the crime.

"When I came up the day before yesterday, the door was locked, and no one would think that there would be a safety hazard if the door was not locked." The property management added.

"Is there a security guard on the rooftop?"

"Yes, the security guards are divided into shifts, one shift during the day, one shift at night, one patrol at two o'clock in the afternoon during the day, and one patrol at eight o'clock at night, all take the elevator to the 30th floor, go around the rooftop first, and then patrol floor by floor, normally speaking, it is a routine, nothing is wrong, this community has been ten years, there has never been a problem with public security, this time it is really an accident."

"In addition to going up the 30th floor of the elevator and going up, you can also go up the stairs from the fire escape." Qin Gang added.

"Yes, yes, the fire escape can be from the parking lot of the basement, take the stairs all the way up," the property management added, and then Qin Gang's words.

The thief had not taken the elevator, and the way up must have been a fire escape.

"There's a camera in the basement." Li Yi asked.

"There must be, which basement doesn't have a camera."

While speaking, Qin Gang and Li Yi had already walked to the edge of the eaves of the balcony facing 3001.

"But the light in that basement is like the scene in a ghost movie, it's good to be able to take a shadow, people must not be able to see clearly, but it is still meaningful, at least after watching the video, we still know that near the time of the crime, there was a guy running out of the basement, about 2:34 in the morning." Qin Gang said.

"Yes, if you count the time, it's almost certain that guy."

Li Yi squatted down cautiously, holding the eaves with both hands, poked his head out hard, and looked down, this height really made people feel a little palpitating.

About 2 meters away from his squatting position, there was half a pillar, Qin Gang pointed with his hand, "The rope is set on that pillar at one end, I calculated it, if you just want to droop to the balcony of 3001, there are about 5 meters enough." ”

On the eaves, there are obvious traces of trampling footprints, and on the pillars, there are also obvious traces of rope binding and rubbing.

"What kind of rope is that?" Li Yi asked Qin Gang.

"It's hard to describe, it's a bit like a kind of hemp rope I've seen in the construction site, thicker than the climbing rope in the outdoor goods store, the technical team has inspected, the rope does have cement and lime ingredients, I thought about whether that guy would work on a construction site, the day before yesterday I stepped on three construction sites, there was no gain, the construction site, that kind of rope is everywhere, there are long and short, I asked if it is used to tie some building materials, and throw it away on the spot when it is used up, it is not a matter of fact."

"It is estimated that that guy has worked on a construction site, of course, it may not be a construction site in our city, he knows that as long as it is a construction site, he can get a rope casually, no need to buy zero cost, throw it away when it is used, and pick one up in the construction site if he wants to use it, which is in line with his brain circuit."

Li Yi carefully hugged the eaves and stretched out a leg, hung it in the air, paused for two seconds and then retracted it.

"You haven't thought about it, it is said that Team Liu is thinking about his chair but wants to sit on it for you, a bright future, be cautious in your words and deeds."

Qin Gang was not surprised by Li Yi's behavior, he was just joking.

"Do you know how I just felt?"

Li Yi stood up, and Qin Gang clearly saw sweat on his forehead.

"Scared to pee?"

"I feel like I'm one foot in the ghost gate, I'm still trembling now, convinced, everyone has survival skills, it depends on whether they are in the right place."

The property management also breathed a sigh of relief, Li Yi's actions just now, he was stunned on the spot, he had forgotten to open his mouth, and now he finally got angry, "Comrade police officer, you also squeak, I don't dare to come out, if there is an accident, this is ...... accident"

"If there is an accident, you are an eyewitness to the scene of the crime." Li Yi also settled down.

Qin Gang told Li Yi, "When the security guard arrived at 3001, the door of Ms. Lin's house was open, and when she entered the door and turned on the light, she saw Ms. Lin leaning on the edge of the sofa close to collapse, her body and face were full of blood, she covered her face with a towel, and the towel was also stained red with blood, so she hurriedly stopped the bleeding and did a simple bandaging for her, until the support colleagues arrived, and everyone woke up the neighbor at the opposite door in the chaos." ”

How long does it take to run down the basement from the 30th floor, Li Yi has been thinking about this question in his mind.

"In this way, let's make an example to verify, running from the door of Ms. Lin's house to the location where the suspect climbed the wall." Li Yi signaled to Qin Gang, he has always been a leader in middle-distance running at the police academy.

"Me?"

"Yes, full of skills, how can I not let you play."