Chapter 223

Surveillance room.

Huang Huang Qiangmin was smoking a cigarette while watching Lei Xin interrogate the prisoner, and he couldn't stop commenting:

"Those who do pre-trial work really have a full stance."

"This kid is lucky."

"This part actually has some merit."

Then, he heard Bai Bai Yuequn nonchalantly expose the eldest and second sons of the Yuan family.

Huang Huang Qiangmin was stunned and almost jumped up.

Is this case back on his own head?

And, the Yuan family went from being the victims of a burglary to the suspects of planning a murder?

Huang Huang Qiangmin was like a marmot jumping around in a melon field; just as he was happily eating the melon, he looked up and saw a boy of eleven or twelve, wearing a silver ring around his neck, holding a steel fork in his hand...

Huang Huang Qiangmin covered his heart, took two breaths, looked at Jiang Yuan, and said, "This is trouble now."

Jiang Yuan was full of confidence now and said, "If there's a case, just keep solving it; what does it matter?"

"Instigating others to commit murder, this kind of case is the most troublesome. Basically, you can only use confessions to solve the case." Huang Huang Qiangmin's head was full of lawsuits; he looked around and saw that it was all police, so he said, "And it involves Yuan Yuan Jiansheng's two sons; needless to say, it will involve the inheritance issues of the Jianyuan Company. Sigh, trouble upon trouble."

What Huang Huang Qiangmin didn't say was that this was no longer just a matter of pure investigation and case-solving; it would more or less involve some other issues.

Jianyuan Company is a major taxpayer in Qinghe City, especially a leader among private enterprises, and has been rooted in Qinghe City for 20 years; it really isn't something that Huang Huang Qiangmin, a criminal police captain from a remote county bureau, can touch.

Solving the case is fine, but as for the corresponding other issues, to be honest, Huang Huang Qiangmin doesn't have the qualifications to touch them either.

"I'll report it to the higher-ups." Huang Huang Qiangmin, this freshwater crocodile, was a bit unable to handle this kind of salted matter.

For Qinghe City, Jianyuan Company, which is about to go public, is at its most prosperous time; everyone wants to stand under the fruit tree in the harvest season and have a full meal, never thinking that the competition for fertilizer for the fruit tree would reach such a degree.

Jiang Yuan continued to listen to the interrogation, but his thoughts had already shifted from conviction to the issue of the mastermind behind the scenes.

From the information they currently have, the eldest son of the Yuan family, Yuan Yuan Yuming, and the second son, Yuan Yuan Yulang, are both suspects.

And, unlike committing murder personally, which requires time and ability to commit the crime, instigating others to commit murder has a much lower difficulty.

Just as Huang Huang Qiangmin said, instigating others often only requires using one's mouth, so basically, one can only rely on confessions to solve the case; without a confession, it is very difficult to prove.

Interest relationships are also a route, but they only apply to situations where benefits are paid in advance, and the eldest and second sons of the Yuan family, in this matter, are likely paying more in information fees.

The promises they made to Bai Bai Yuequn can be paid slowly over the next few years.

It's just that this person didn't expect that after Bai Bai Yuequn's alibi was broken, his emotions were already in a state of total collapse, and he didn't care about the next few years.

Not long after, Bai Bai Yuequn's camera was brought over.

Huang Huang Qiangmin took it directly to the image investigation squad, and the image investigation technician inserted the camera directly into the data forensics analyzer.

Bai Bai Yuequn thought that setting a password for his camera was useful; in fact, current police forensics all use this type of equipment to copy data directly, automatically list it, produce analysis reports, and then operate directly on a computer or PDA.

The recent photos were quickly released.

Sure enough, they were scenes of the third son, Yuan Yuan Yutang, doing high-intensity sports, as well as scenes of him celebrating someone's birthday, and photos of bondage.

At the end, there was a separate note, which Bai Bai Yuequn took several photos of, very clearly:

WeChat:

Without Huang Huang Qiangmin saying anything, the technician with the computer here immediately put the WeChat ID into the system to check.

Current network security has interfaces that link directly into chat software like WeChat and Alipay; police officers with authorization can see chat records by entering the number.

Current telecom fraud is rampant, and network security finds scammers through similar methods.

The WeChat ID that contacted Bai Bai Yuequn was obviously also newly registered.

The only contact was Bai Bai Yuequn himself; after he added him as a friend, he sent him a bunch of pictures.

The image investigation police officers immediately collected all the pictures.

Sliding down this way, they saw several urges from the WeChat ID to Bai Bai Yuequn, as well as reports on Yuan Yuan Yutang's location.

The image investigation police officers also recorded the times separately.

Although many people knew Yuan Yuan Yutang's whereabouts, they still had to send people to follow him or find ways to understand it through some means.

Like Bai Bai Yuequn himself, he wasn't very clear about Yuan Yuan Yutang's state at the time.

Starting from here, perhaps they could investigate some things.

By the last report of Yuan Yuan Yutang's location, after Bai Bai Yuequn executed the plan, the WeChat ID no longer sent any information.

Several image investigation police officers fell into deep thought after reading the pictures.

Or call it autism.

Using images to find a murderer is a route that particularly conforms to ordinary people's thinking.

But for image investigation police officers, choosing any plan or route to pursue a murderer means a huge amount of time cost and energy investment.

It's like finding a thief through a surveillance camera; there are always people who lose their phones and call the police, wanting to see surveillance video but can't. Most of the time, it's because the police or image investigation are too lazy to look.

Because police looking at images can't really see the thief's face and just call it a day. First, they have to confirm that the case actually exists, that is, that the thief really stole the phone, and it's best to have clear surveillance footage of it.

This means that if the thief knows a little bit and covers up a little, the main surveillance cameras nearby won't capture this action.

Of course, the victim has often confirmed it by this time and shouted the slogan "It's him," but for the police, this is obviously not enough.

Secondly, once the existence of the case is confirmed, they still have to track down the thief.

If they don't want to squat and wait, it's best to follow the surveillance route to find the thief's residence or means of transportation. If the thief lives in an urban village, or there is a section in the middle without surveillance, or he just doesn't take a vehicle with a clear license plate, this road is also considered blocked.

Finally, catching the person, if the appraised value of the phone is not worth 3,000 or 5,000 yuan, it basically doesn't meet the standard for prosecution...

Of course, the homicide case in front of them must be pursued.

But choosing which investigation plan to use is always a point of frustration for image investigation.

Jiang Yuan walked over at this time and said, "Can you copy a copy of the photo of that note to my email?"

"Oh, no problem." The image investigation police officer hurriedly responded, operated on the spot to give it to Jiang Yuan, and asked, "Do you want to ask a document examiner to take a look? With just these few words, I'm afraid it's a bit difficult."

"En, I'll take a look myself first." Jiang Yuan knew that Qinghe City didn't have any famous document examination experts, but he himself had LV3 document examination skills and didn't feel that there was any difficulty just because there were few words.

For documents, few words have few words' way of looking at them.

Many words naturally have many words' way of looking at them.

Like the photo in front of them, "WeChat:" only has two characters, one symbol, and a string of numbers; when ordinary people compare them, most consider them from the strokes of the characters and so on.

What Jiang Yuan is most concerned about is the Arabic numerals.

Arabic numerals seem simple, especially when compared with Chinese characters; the points that can be identified seem very few, but in the development of modern document examination, Arabic numerals can actually provide a lot of information.

The frequency of modern people writing characters is getting lower and lower, especially in some economic cases; the text available for identification is already small, but instead, some numbers appear with very high frequency.

Moreover, it's not just Chinese criminal investigation experts who study Arabic numerals; criminal investigation experts from other countries, as long as document examination is involved, always study Arabic numerals.

A large amount of research and the participation of experts from various countries have made document examination of Arabic numerals have many theories and ready-made techniques.

For example, the drawing method of circles is the most basic form of numerical symbols. In terms of morphology, 0, 6, 8, and 9 are all fully enclosed, while 2, 3, and 5 have semi-enclosed circles, and in terms of the direction of the pen, 2, 3, 5, and 8 are clockwise, while 0 and 6 are counter-clockwise.

Then, just by examining the drawing method of the circles, one can discover some people's pen-handling characteristics.

In addition, such as their starting and ending strokes, whether they extend out of the grid lines, the tilt angle of different numbers, etc., are also identification points.

When encountering such strings of numbers, the interval between numbers, the connection method between characters, the high-low relationship between numbers, etc., are also identification items.

In short, few words, no problem, there are plenty of ways.

Jiang Yuan turned around and sent a message to Huang Huang Qiangmin: "Captain Huang, I want some handwritten materials from Jianyuan Company for document examination comparison."

Huang Huang Qiangmin: "Who are you asking to do the document examination?"

Jiang Yuan: "I can do it; I'll do it myself first."

Huang Huang Qiangmin: