Chapter 316 Data Analysis
Found it?
"Let's go!"
In the conference room, Ren Hongfeng's men brought back two videos.
"Captain Chen," Ren Hongfeng turned on the computer and asked his detectives to project the found videos onto the screen.
"This is the video provided by the residents of Unit 101, Building 1, Wanbao Community when we were visiting and investigating the residents of the community."
"Because there is no surveillance in the community and their house is on the first floor, a micro camera was specially installed for the purpose of theft prevention, and the lens is facing the door of Unit 1... Look, this is the video taken on April 3."
The video plays.
The time is 12:28 p.m.
It was dark, but with the weak light at the door of the unit, the figure can still be seen clearly in the surveillance.
A tall white man with blond hair crossed the camera.
The video is very short, and the man appears in the camera for only two seconds.
Moreover, the man in the surveillance only has half of his face, and he is wearing a mask.
"This is the only foreigner who appeared at the crime scene within five days after the incident."
Ren Hongfeng opened another folder: "This is a picture taken by a speed camera on the road in front of the Wanbao Family Courtyard community."
12:23 p.m. on April 3.
A photo was projected.
A speed photo of a taxi.
"Team leader Chen, look at the passenger seat."
The picture taken by the speed camera is very clear.
The yellow-haired man, wearing a mask, and the white man captured by the camera installed in Room 101, Unit 1, Building 1 of the Wanbao Family Courtyard are the same person.
There are not many foreigners in Panshi, especially white people.
Although there is no evidence to directly prove that this yellow-haired white man wearing a mask is the foreigner who entered the rental house where Qin Liansheng died, but this video and photo are enough.
"The appearance of the white man in the video is very obvious. We have to find this person in the shortest possible time."
Chen Yan knew that this person must be the key to solving the mystery of the case: "Check this taxi. It has not been three days since the 3rd. The driver must have an impression of the foreign passenger."
"If the other party paid the taxi fare through WeChat, contact the technical department to find this person's information."
"Captain Qingshan, you are responsible for this matter."
"Also, the background investigation of Cui Xiaobing and Qin Liansheng needs to be sorted out again."
"I want all the information of these two people, family members, bank accounts, relatives and friends, etc."
"Lan Feng, you are responsible for this matter."
Turning his head, Chen Yan looked at Ren Hongfeng: "Captain Ren, how is the investigation of the trajectory of Qin Liansheng and Cui Xiaobing delivering food?"
"It's still under investigation, and the results should be available tonight."
"Good!"
Chen Yan now has two clues.
First, the yellow-haired white man wearing a mask
Why did this person go to Qin Liansheng's rental house and look through the bedrooms of Qin Liansheng and Cui Xiaobing.
How could two ordinary people who work as takeout deliverymen be related to him, a foreigner?
The most important thing is that the other party showed that they knew about Qin Liansheng's death.
However, this case was not reported publicly. Even if the neighbors knew that someone had died, it was only circulated in a few nearby communities.
How did the yellow-haired foreigner know?
The second is Cui Xiaobing, who has been detained.
However, now is obviously not the time to interrogate Cui Xiaobing again, because Chen Yan has too little information.
When facing Cui Xiaobing, this information gap will make the interrogation meaningless.
Because you don't even know what the other party is going to do.
The work was arranged, and each group began to investigate overnight.
In the early morning of the next day, the detective arranged by Ren Hongfeng brought back good news.
"Team leader Chen, all the takeaway orders that Qin Liansheng and Cui Xiaobing have run in the past few years have been checked."
"We have also found all their work tracks."
Chen Yan, who had not slept all night, was shocked.
Why check the work tracks of two people?
Because Chen Yan didn't believe that Qin Liansheng and Cui Xiaobing were really just ordinary takeaways.
What takeaway home would be clean and spotless?
Don't talk about others, Chen Yan himself can't do it.
So, with such good self-discipline, can he just be a deliveryman?
Turn on the computer, connect to the projector, and two tables appear.
"This is all the delivery orders they have received in the past five years."
Five years, such a long time span, the data in the two tables has more than ten thousand items.
Open another folder, it is the movement trajectory of the two people.
This is the movement trajectory of the two people when they received and delivered orders obtained by the technical department of the Panshi Detective Team in contact with the delivery platform.
"This trajectory data is not complete. The data from three years ago is not archived, and only part of the trajectory data for the past two years is available."
On the screen, there are dense screenshots, which dazzle everyone.
Everyone, looking at the mess on the projection screen, is a little puzzled.
"Team leader Chen, these data... are the work of ordinary deliverymen."
"Everyone is about the same, right?"
Chen Yan nodded, these data are indeed ordinary flow data.
However, if there is an unknown story behind the two people, then they can't really deliver food.
Of course, it is impossible to analyze it from the current data.
"Leave the data to me," Chen Yan put away the data hard drive and looked at Ren Hongfeng: "Team Ren, please give me a separate office and a computer."
"That's no problem," Ren Hongfeng nodded affirmatively: "There is an empty office next door to me, and the computers inside are also newly configured."
…
Locking himself in the office, Chen Yan began to face the data.
When investigating the case of the US-Japan International Hospital, the system once rewarded Chen Yan with a skill.
Computer programming expertise.
For a long time, this skill was basically not used in the cases Chen Yan encountered.
Today, it finally comes in handy.
Part of the trajectory data, as well as the information in the table, totals tens of thousands of pieces of data.
Just by looking at and analyzing it with the naked eye, you can't discover the hidden patterns inside.
What Chen Yan needs to do now is to analyze from these messy data whether Qin Liansheng and Cui Xiaobing have any fixed takeout customer groups in the past five years.
If so, who did they buy, what did they buy, and where did they buy it from.
The industry of being a delivery person is hard work.
But when it comes to treatment, it’s actually not low.
This is an industry where as long as you work hard, your income can reach the upper-middle level.
However, the wear and tear on the body is relatively large, and it is difficult for ordinary people to adapt to the high-intensity work of a delivery person for a long time.
But Qin Liansheng and Cui Xiaobing actually worked for five years.
Of course, Qin Liansheng's time is longer.
Therefore, there is a doubt here. Have Qin Liansheng and Cui Xiaobing never thought about changing careers?
You can’t spend your whole life working as a takeaway person.
The sounds of typing on the keyboard merged into one, and Chen Yan was writing his own program to analyze the data.
The first step was to catalog all the takeout dishes the two of them had made over the past five years.
Then connect the origin and destination of the takeout order, and combine the existing movement trajectories of the two people to simulate all their takeout order trajectory routes.
In this way, it was clear where the two of them had been, which takeaway shop they had taken business from, and who they had given the things to in the end.
However, even with computer program specialization skills that are rewarded by the system, this takes time.
After all, the amount of data processed is too large.
While Chen Yan was processing the data and conducting analysis, Liu Qingshan, Lan Feng and others were also working non-stop.
At three o'clock in the afternoon, Liu Qingshan returned first.
At four o'clock in the afternoon, Lan Feng also returned to the Panshi Detective Team.
All the information comes together.