Chen Shifu explained: "Lao Ding is our driver, usually live in our house, in addition to the driver's work, he is also responsible for the maintenance of our family's monitoring room, and he has to be on duty in the monitoring room every night." ”

Soon, someone immediately went out to find Lao Ding back, and at this moment, Lao Ding's hands were full of oil and he was still holding a wrench in his hand.

After coming over, Lao Ding couldn't help but be stunned when he saw so many people at the scene, and asked, "Mr. Chen, is there anything wrong with me?"

Chen Shifu asked, "Lao Ding, what are you doing? Why didn't you see you on duty here tonight?"

Lao Ding said: "Mr. Chen, I was originally on duty here tonight, but an hour ago, I suddenly remembered that there was a Japanese car at home with an abnormal engine noise, so I left the duty room and went to the underground garage to repair the Japanese car. ”

Li Tianyi suddenly asked: "Not long ago, there was a power outage for about five minutes, don't you know?

Lao Ding said with a smile: "This officer, you may not know very well that there is an emergency lighting power supply in the underground garage of our house. I knew about the power outage before, and I didn't think it would last long, because we had a two-wire power supply in this villa. If one of the lines goes out, the other line will also be powered. So I waited in the garage for a while, but I didn't expect it, and waited for a long time before the call came. After the call, I went back to repairing the car. ”

Li Tianyi found that when this old man spoke, his eyes flickered, and he looked around with his eyebrows, and suddenly asked, "How is your car repaired?"

Lao Ding hurriedly said: "I have found the fault with the engine, this Japanese car has a problem with the Touareg, the reason why there is an abnormal engine noise, is because of the design problem, although it is also a luxury car of more than one million, but the Japanese cars sold to us Chinese people are the worst quality cars." These little Japanese children are really hateful. ”

At this time, Chen Shifu looked at Lao Ding and asked: "Lao Ding, what is going on with this DVR, why can't I find the video recording during the power outage from the DVR?"

Lao Ding hurriedly said, "This is impossible." This DVR has been running normally. ”

Li Tianyi stared at Lao Ding for a few moments, did not say anything, but directly turned on the DVR in front of Lao Ding, and once again showed the monitoring content recorded on the DVR, from the above it can be clearly seen that the DVR has no recorded content in a few minutes between power outages.

Lao Ding stared at the DVR for a long time, and finally said with a wry smile: "I can't figure this out, I think it's better to find a professional monitoring engineer to come and see, they must know what's going on." ”

Li Tianyi stared at Lao Ding's eyes for a while, then walked around the monitoring room, slowly came to the place where the UPS power supply was located in the monitoring room, and checked it along the power supply line of the UPS power supply.

In the end, Li Tianyi found the problem, and pulled out a power cord connected to the UPS battery pack with a gentle pull.

Li Tianyi said coldly: "The problem has been found, the reason why there is no recording during the power outage, is because the UPS power supply system responsible for supplying power to the hard disk video recorder and all the cameras during the power outage has a problem, and the power cord connected to the UPS battery pack is in a virtual state, which is equivalent to the UPS power supply has no current and voltage output, after the power failure, it is naturally impossible to supply power to the hard disk video recorder and cameras, memory and other equipment." ”

Speaking of this, Li Tianyi's eyes looked at Lao Ding coldly and asked, "Lao Ding, has you always been in charge of this monitoring room?" ”

Lao Ding nodded and said, "Yes." I've always been in charge. ”

Li Tianyi asked: "In this case, why didn't you find such an important issue of UPS power supply?"

Lao Ding said with a wry smile: "This police officer, I'm just a driver. As for the monitoring room, I am just on duty to see if anyone sneaks into the house to steal things. As for the maintenance and repair of these monitoring equipment, I don't know anything about it. ”

To put it mildly, Lao Ding pushed all the responsibilities on his body.

Li Tianyi looked at Chen Shifu and asked, "Is what he said right?"

Chen Shifu nodded and said, "That's true, usually he is only responsible for guest security guards." Because we have security guards patrolling 24 hours a day, there is no problem with the security of the community, and we install monitoring just in case, so Lao Ding is usually only responsible for night duty. To put it bluntly, it's just a night's sleep in the duty room.

All surveillance cameras are equipped with motion detection, which will identify and alarm if someone sneaks into our villa. ”

Li Tianyi looked at Lao Ding and asked, "Lao Ding, when you usually sleep here, will there be an alarm?"

Lao Ding nodded and said: "Sometimes there will be, but there are very few, but every time the alarm sounds, I will get up and take a look, because at this time, the video playback and real-time recording when the alarm goes off will automatically pop up on the monitoring screen."

However, it is usually triggered by stray cats in the community at this time. ”

Li Tianyi nodded slightly, Lao Ding didn't lie, just now he checked the alarm content displayed by the hard disk video recorder, it is true, some times it is caused by stray cats.

Li Tianyi looked at Chen Shifu and Zhang Yanru and said, "Trouble the two of you, call all the people in the villa." ”

Soon, all the personnel in the villa were called over. In addition to Chen Shifu and Zhang Yanru and Zhang Yanru's son, there are also lawyer Chen Keli, female nanny Jiao Meiling, and driver Ding Wuru.

After all these people arrived, Li Tianyi looked at everyone and said, "Everyone, I believe that by now you should already know that your boss Chen Tianguo is dead. Ostensibly, he was strangled with a rope.

Next, our Municipal Public Security Bureau will discuss the case on the spot, and you, no matter who has any clues, can interrupt our case discussion at any time, provide us with clues and express your own opinions on what we are discussing, we have only one goal, to find the suspect as soon as possible, so that everyone is in a safe state, so as not to become the target of the suspect's next hunt. Did you hear me?"

These people all nodded, and Li Tianyi's gaze swept over their faces one by one, noting the expressions of each of them at this moment.

Afterwards, Li Tianyi looked at Jin Defu and Xia Mingze and asked, "Two, what do you think of this murder case tonight?"

Jin Defu pondered for a moment and said, "Director Li, I think that the suspect is definitely not a migrant worker. Because for the migrant workers, their main purpose today is not to seek revenge, but to get their arrears of wages and construction money. Killing Chen Tianguo didn't do them any good.

And in previous investigations, I found no signs of someone jumping from the upper floor under the window. ”

As soon as Jin Defu finished speaking, Zhang Yanru stood up and said: "I don't agree with this point of view, because if the migrant worker who committed the crime can jump from the window after killing my husband, then only a few people under the window will work together to catch him." ”

Jin Defu said with a smile: "Catch him, how can you catch him? After all, it's a big man, and he has to weigh more than 120 pounds." Jumping directly from the third floor more than ten meters high, that kind of impact is not something that ordinary people can catch. ”

Zhang Yanru said: "They can't catch it with their hands, but they can use tools." ”

For example, bags, nets, etc. Migrant workers working on construction sites are the last thing they lack.

When Li Tianyi heard Zhang Yanru say this, he immediately beckoned a policeman and said: "You immediately take a few people out and search in a fan shape from the side where Chen Tianguo's study is located, about 300 meters deep." ”

The policeman quickly walked out, and after more than ten minutes, he returned with someone and said, "Director Li, we have all searched and found no suspicious items. ”

Li Tianyi nodded, looked at Zhang Yanru and said, "You heard it, this suspicion can be ruled out." ”

Zhang Yanru said: "So, how to explain the rubber shoe prints of migrant workers and the rope with mud spots found at the scene?"

Li Tianyi smiled slightly and said: "This is very simple, you only need to find a police dog to sniff the smell of this rope and squinted eyes, and then let the police dog follow the map." ”

When Li Tianyi spoke, his gaze kept sweeping over the faces of several people in the Chen family at the scene.

Li Tianyi noticed that when he mentioned the police dog, lawyer Chen Keli's face changed significantly.

Seeing this, Li Tianyi had the bottom in his heart.

After Li Tianyi's words fell, not long after, a policeman walked in with a police dog, saluted Li Tianyi, and said, "Director Li, Shi Yunxiao of the police dog team reports to you." ”

Li Tianyi nodded and said, "Comrade Shi Yunxiao, hello, please take your police dog to sniff the smell of this rope and rubber shoe prints, and let it search to see if there is anyone at the scene who matches this smell." ”

As soon as Li Tianyi's words fell, lawyer Chen Keli immediately stood up and said, "Director Li, I think you should let the police dog pass through those migrant workers first." After all, they are the most suspicious people. ”

Li Tianyi said lightly: "Thank you Mr. Chen Keli for your suggestion, but we can't adopt it, because our police have our own procedures and principles for handling cases." For us as the police, anyone can be a murderer without identifying the murderer. So for us, whether it's a migrant worker or any of you here, it's a potential candidate for criminal suspects. ”

After speaking, Li Tianyi waved his hand, and Shi Yunxiao immediately took the police dog to the rope and rubber shoe footprints and sniffed it, and then under Shi Yunxiao's traction, the police dog sniffed over the bodies of several people present one by one, and finally stopped at Chen Keli's side and lay down.

Seeing this, Chen Keli's face immediately turned pale. Li Tianyi and Jin Defu Xia Mingze immediately showed excited smiles on their faces.