Near noon, Ji Yue and the others finally finished checking the last point, but naturally, they still found nothing.
It seems that they will finish checking everything in two or three days at the earliest, and four or five days at the latest.
If you can't catch it by then, just summarize it and it's time to leave.
"You guys go to another district. Call me if you have anything." Bai Song originally wanted to invite them to have lunch, but Ji Yue and others had to go to a meeting, so Bai Song didn't want to keep them.
There's really nothing we can do about this; this is the case with most cases in the world.
A fish has entered a muddy ditch. How do you catch it?
Drain the pool - check each one;
Use the net to fish again and again - screening;
Fishing with a fishhook - luring the enemy to appear;
Use high technology to track down - technical reconnaissance;
Install fixed point sensors - surveillance video...
Actually, there is not much difference.
It’s just that some ponds are too big and the water is too muddy to catch them.
Some ponds are too large to be drained, so if other methods are used, it will be impossible to catch 100% of the fish.
Of course, someone said, what about pouring medicine into the pool?
Okay...if this is translated into reality, it's called a nuclear bomb washing the ground.
Whether the effect is good or not, only those who use it know...
On the way to Tiannan District, Bai Song received a call from Liu Shuyuan.
"Is it convenient for you to answer the phone?" Liu Shuyuan asked.
Bai Song didn't drive, he was taking the subway, "It's inconvenient, there are people everywhere."
"You went to the bar? It's so noisy? Oh oh oh... subway." Liu Shuyuan heard the station announcement on the other end of the phone, and then said: "Do you have headphones?"
"Yes, I'll put them on." Bai Song took out the headphones from his pocket.
"Get off at the next stop, find a place where there is no one, put on your headphones and talk to me." Liu Shuyuan said.
"Where is there a place in the subway station where there is no one?" Bai Song was speechless.
"Okay, then don't say anything you shouldn't say. Put on your headphones and listen to me. Just express yourself freely. I can understand you." Liu Shuyuan said.
"Okay." Bai Song put on his headphones.
"Do you have any powerful connections in Tianhua City?" Liu Shuyuan asked, "If you do, just say it. Don't hide it at this time. I have no other options to get you to the Municipal Bureau."
"This... really not, you know everyone I know." Bai Song said.
"Ma Donglai is the most important leader you know?"
"The relationship is good, that's it."
"Okay, I believe you. Then let me ask you, do you know the previous Director Zheng of the Criminal Investigation Bureau?"
"know."
"Shit, even retirement counts! Why didn't you mention that?"
"I've only met him twice, we just knew each other."
"Ah?" Liu Shuyuan was a little confused: "He mentioned your name during the discussion at the Municipal Bureau today."
"I ran into him this morning. Maybe he was in a good mood."
"Yes, that's right. These old leaders, especially those at the department and bureau level, have been called back to study recently. Of course, they didn't make any mistakes. They were all big bosses in the past, and their students are all over the world. Although they came back to study, learning is only part of it. The Municipal Bureau also has to express its condolences." Liu Shuyuan said: "There was a condolence meeting this morning. During the chat, Director Zheng mentioned you and praised you."
"Ah?" Bai Song was also stunned. Could it be that his handsomeness had been discovered by him?
"At their level, they won't talk nonsense even after retirement." Liu Shuyuan said to Bai Song: "Director Zheng is Ma Donglai's master."
"!" Bai Song then realized what was going on.
I'm afraid that when Ma Donglai went to visit Director Zheng, he also talked about his affairs. Director Zheng is also interested in some major cases. This is a habit for decades, so when Ma Donglai went to Director Zheng, Director Zheng would definitely ask about it. And in the major cases in Jiuhe District in the past two years, Bai Song has been involved in more or less.
No wonder Director Zheng called out Bai Song's name right away, so this is what is going on!
"Is it a good thing or a bad thing for me?" Bai Song was a little confused about what was going on.
"Of course it's a good thing." Liu Shuyuan said: "A compliment from a big boss is more useful than your director writing ten reports to you, especially at this critical moment. These retired old leaders don't really talk nonsense, but you are really good."
Liu Shuyuan paused and said, "The rest depends on you showing some real skills."
"Okay, thank you, I understand." Bai Song hung up the phone and secretly admired him.
This network of interpersonal relationships is so complicated, and Liu Shuyuan even knows this, which is really amazing!
…
Well, now is the time to try your luck!
In most detective novels, the murderer is found out through reasoning, and then the murderer is nearby and can be caught directly.
But what if the murderer ran away? Can we deduce where the murderer is by reasoning?
It is possible in a short period of time, but it is impossible after running for eight years. This is not something that can be solved by a detective novel.
Some things can only be achieved through persistent efforts and collaboration.
…
However, Bai Song didn’t know that this matter was so difficult!
There are quite a few dirty and messy places in these two districts.
Many people are accustomed to tall office buildings and bright lights and night life, but they don’t know that any city, even in the urban area, still has such places.
There is no need to mention Tianhua City. Even in Shangjing and Modu, except for the most core areas, there are many such places in other areas.
Moreover, these places have one common feature - many passages.
In some tube-shaped building communities, each floor has a large corridor and dozens of households. There are dozens of passages outside the community.
Surveillance is becoming more and more complete now, and therefore the number of surveillance cameras in these places is astonishingly large.
These days, Sun Jie has to go back to prepare for the wedding, which will be on Saturday. Bai Song and Wang Liang never stop, always looking for videos everywhere.
It would be too difficult for just the two of them.
A few days later, on Friday night, Bai Song and Wang Liang were working together to process the hundreds of GB of video footage copied from more than a dozen recording locations that day, and then using software to compare them.
During the day, people are busy retrieving the day's data. At night, computers are busy all night, automatically comparing.
"It would be great if there was a fully automatic facial matching system someday." Bai Song sighed.
"It's not technically possible, right? Unless every camera is equipped with optical fiber to the headquarters, it would be better to use wireless transmission in an encrypted frequency band for greater convenience. However, cameras are getting higher and higher in resolution. In a community with 30 or 40 cameras, the amount of data per second is more than 10MB, which is difficult for the current 4G network to support. Moreover, the video clarity will continue to increase, and the data will also increase." Wang Liang said, "We can only do a certain degree of pilot work now, but it involves the privacy of citizens, and there are some difficulties."
"Well, unless there is a faster transmission protocol." Bai Song nodded, "But for the transmission of this kind of big data, confidentiality is still the top priority. I don't know which country will be the first to make a breakthrough in the future. It's most reassuring to use our own."
"It's okay. Currently, short-distance wireless or wired transmission is still more commonly used. Faster transmission protocols require a greater base station density, and the charges will not be cheap in the short term." Wang Liang spoke while operating the computer skillfully.
Bai Song didn't bother him. After a while, he pointed at the phone on Wang Liang's desk and said, "Your phone is ringing."
"Help me answer the phone." Wang Liang was operating the computer.
Turning on the phone, Bai Song heard a familiar voice: "Wang Liang, your hemorrhoids haven't healed yet, right?"
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