National Forensic Doctor

outside the door.

Huang Qiangmin began to write notes for a group of people.

Previously, when the two fat and thin men from Qinghe City came to investigate, they had already made notes for them, but Huang Qiangmin still had to do it again.

Although Yuan Jiansheng also found it troublesome, he still cooperated as much as possible.

With him as an example, others must follow suit and take notes no matter how unwilling they are.

Huang Qiangmin took several hours to complete the transcripts of more than thirty people, even if he asked focused questions.

Everyone was exhausted.

Huang Qiangmin also tried his best to cheer up and finished the notes before entering the mansion.

The luxurious decoration did not arouse his interest at all. He had also seen the luxurious mansions that Wu Jun had seen. He had even had similar dreams to Wu Jun, but Mr. Guan did not bless him.

"How are you doing?" Huang Qiangmin came outside the study and saw that a security tape had been circled at the door. He stood outside the security tape, looked at the busy people inside, and asked, "Can we collect evidence?"

Jiang Yuan heard the sound, straightened up, and said with a "hmm", "I picked a lot."

"Are there any traces of evidence elimination?" Huang Qiangmin asked.

"A little, but not much." Jiang Yuandao.

Huang Qiangmin frowned without surprise: "Internal conspiracy?"

"It's hard to tell." Jiang Yuan turned around again and took a fingerprint.

Little Fatty was spreading powder next to him, while Wu Jun and Shou Xiankan next to him were cleaning desks and other things to prevent them from bending over and dying of pain.

Huang Qiangmin sighed: "This kind of family business is quite troublesome. Now, the eldest and third eldest son of their family hold important positions in the company, and the recent confrontations have been fierce. It is not ruled out that they may enter the study to engage in small tricks. In addition, The company also has other original shareholders and management, and they probably have their own ideas about the upcoming listing."

"By the way, there is also the issue of information disclosure." Huang Qiangmin summarized the information he gained and said: "Many people in Jianyuan Company are not very clear about the listing situation. There is also huge room for arbitrage. Yes, it is possible to come here to collect some information for this purpose..."

After Jiang Yuan collected his fingerprints, he looked up at Huang Qiangmin and said, "There are still a lot of properties missing."

"Compared with the value of these documents, they are just a drop in the bucket." Huang Qiangmin said.

"It's enough for a thief. Among the lost items are mutton-fat jade handles, jade paperweights, cash, watches, luxury pens, and computer accessories, all of which are of high value. thing."

"What do you mean?" Huang Qiangmin's thoughts were somewhat affected by the images he just recorded. He hadn't done anything for a while, especially after Jiang Yuan came. The detection rate of crimes in Ningtai County is extremely high, relatively large. The findings can basically be successfully detected, which makes Huang Qiangmin almost out of the front line.

However, Jiang Yuan's explanation still gave Huang Qiangmin a different smell.

Jiang Yuan didn't pretend any more. He took out his mobile phone, took out a few photos, handed them to Huang Qiangmin, and said, "There are signs of technical unlocking on the study door."

The picture Huang Qiangmin saw was the inner wall of the keyhole taken by Jiang Yuan.

The light from another light source on the side can vaguely capture a little scratches on the inner wall.

Huang Qiangmin didn't identify it too seriously. He didn't have any professional skills in this area. He just asked attentively: "In what way was it opened?"

"Hook the marble to open the lock." Jiang Yuan answered.

There are many ways to unlock technical locks. Sometimes when watching movies, it seems that there are many ways.

In fact, there are only 6 ways to use technical means to steal door locks or mechanical locks.

The simplest and most common method is to open the door lock by inserting a bank card, which is often shown in various short videos. This requires that the door is not locked and the door gap is relatively large. It is the most basic and weakest method of unlocking.

The second is forced unlocking, which is a commonly used solution for electric vehicle thefts. The lock is broken directly by twisting it off, which requires the lock core to be weak enough.

In addition, there are sets of locks, locks through the cat's eye or the long handle in the door, and stolen keys.

The above five types can be mastered by ordinary people with a little study and dozens of hours at most. Those who are talented can learn in a few hours.

But these five unlocking methods, in the final analysis, all use the defects and negligence of the door lock, the door or the keyholder to unlock the door.

The truly technical and universal lock-opening method is what Jiang Yuan calls "hook marble lock-picking".

Its principle is to insert the crochet hook into the keyhole, simulate the unlocking principle of the key, and adjust the position of the lock core pin to unlock the lock. Because all marbles are chamfered at both ends during processing, use a special tool to move the first marble, and use the gap of the marble's size error to move it to the unlocking position, and then use a special tool to lock it. , do not let the first marble return to its original position, and then use another crochet hook to continue to move the second marble. By operating in this order, you can move all the marbles to the unlocking position.

At this time, for the lock cylinder, it is equivalent to being pressed tightly by the key.

Therefore, using this method, unless it is a lock without a key, as long as you are skilled enough, there is nothing that cannot be opened.

However, even if you are technically proficient, it will take a long time to open a lock with no obvious defects, especially a high-grade lock with precautions.

Just like in the movie, locks that can be opened in minutes are theoretically of insufficient quality and can be opened with hook pins. The lock can be opened directly by force, or it can be opened with a set. There is no need to use hook pins to open the lock.

If you judge by technical level, if you master 5 lock-picking solutions and can occasionally use a hook to open a lock, you are considered to be at the LV1 lock-picking level. To be able to open Yuan Jiansheng's study door, one must have at least LV2 lockpicking skills.

In other words, Yuan Jiansheng's study door was opened by a professional thief.

Huang Qiangmin thought quickly. Among the approximately thirty people who were trapped in the yard just now, were there any professional thieves?

Ordinarily there is no such thing. Even if someone's hobbies are more biased, this method of hooking marbles to unlock the door is a test of proficiency.

If a professional thief is caught stepping on a sewing machine and comes out three to five years later, his theoretical knowledge may be enriched and his strategic thinking may be more complete, but his hands will definitely become raw and he will have to practice for a period of time. Recover.

And among the thirty people in the yard, would anyone deliberately prepare technical reserves just for this moment?

It's not impossible, it's just kind of stupid.

The lock used on Yuan Jiansheng's study door is excellent, and it is also extremely difficult to open the lock.

Faced with this kind of mechanical lock, even a very professional thief will take a while to open it, and often an accomplice must be nearby to provide special lighting for easy operation.

At the same time, it is very inconvenient to wear gloves when using the lock-picking technique, and many thieves die in this step.

If Huang Qiangmin was placed in a similar position and wanted to unlock the door, he would rather find a way to steal a key to Yuan Jiansheng's study.

Before this, Yuan Jiansheng's study key management was not strict, and acquaintances could get them.

From this point of view, since the study door lock is opened with a hook and marble, the probability of an acquaintance committing suicide becomes very small.

Imagine a company executive in his 30s, 40s, 40s or 50s, with a lockpicking expert, or with a trusted accomplice, squatting in front of the study, sticking his buttocks out, spending ten minutes, or even two or three minutes Ten minutes later, slowly open the lock.

No matter how you think about it, you look like a fool.

"So, is it really possible that the eucalyptus is seeking money?" Huang Qiangmin felt his hands hurt when he thought about the notes he just made.

In Huang Qiangmin's mind, the words and scenes told by leaders at all levels once again appeared in his mind.

Is your love all in vain?

Huang Qiangmin asked: "What evidence is there now, and what evidence is needed?"

Jiang Yuan thought for a while and said:

"The safe door was wiped and not opened."

"There were condoms and sperm stains in the trash can. There were cigarette butts. There were traces of spit and spit."

"The drawers and cabinets all showed signs of being pried open and turned over."

"There are a lot of fingerprints and palm prints, but there shouldn't be too many surprises. There are glove marks."

"The footprints are messy, and some documents have been trampled on. Judging from the footprints, they are two men, one of whom is about 1.6 meters tall and lighter."

When Huang Qiangmin heard this, he finally understood. Indeed, based on the evidence, this crime really seemed to be done by a stranger rather than an acquaintance.

"Keep the love secret for the time being." Huang Qiangmin thought for a while and told the four of them.

Yuan Jiansheng is not a criminal policeman, and he will not look at the problem from the perspective of a criminal policeman.

For Jianyuan Company, which was in the listing stage, Yuan Jiansheng was at his most suspicious. He would not believe it without solid evidence.

But for Huang Qiangmin, everything has to wait until the case is broken.