Gu Chen put on a new pair of gloves again, pushed the tray next to Instructor Zhang Hui aside, and then asked him, "Instructor Zhang, what do you mean by abnormality?"

"Look at this. Zhang Hui gave up a position and gave up the microscope position to Gu Chen.

Gu Chen bowed down directly, and after observing the microscope, he suddenly frowned: "Yes...... Is it pollen?"

"Yes, it's pollen, and it's mixed in with some dirt debris. Zhang Hui said.

Lu Weiwei was stunned: "What ...... So, this is not the dirt that Wang Jinshan scratched at all?"

"That's true. Gu Chen retracted his gaze and said with a look of surprise: "If Wang Jinshan was swimming in the pool, it would be impossible for so many pollen and soil debris to appear between the gaps in his fingernails. ”

Glancing at Lu Weiwei and Officer Wang, Gu Chen asked again, "Senior Sister Lu, Senior Brother Wang, do you still remember having dinner with Wang Jinshan yesterday?"

"What do you want to say?" Lu Weiwei seemed to guess what Gu Chen meant.

Gu Chen walked over to Wang Jinshan's corpse, raised Jinshan's left hand, and asked, "Did you find that his nails had so much dirt yesterday?"

"Absolutely not. Lu Weiwei said with a sip: "When I had dinner yesterday, Wang Jinshan's double number was very clean, and there would definitely not be so much dirt." ”

"Definitely. Gu Chen gently put down Wang Jinshan's left hand: "I sat next to him yesterday, and his hands really don't have so much dirt." ”

But the problem is that after he and his assistant left yesterday, the assistant couldn't contact Wang Jinshan until today, and Wang Jinshan had been floating in the pool until he called the police. ”

"So it is known that Wang Jinshan died around the early hours of yesterday morning, and he drowned, so what happened during the time he left the hotel to his home is the key to the investigation. ”

"Yes. He Wenjun very much agreed with Gu Chen's opinion, and also took the initiative to echo it: "If Wang Jinshan has never gone out since he entered the house, it is impossible for there to be so many suspicious dirt between his fingers." ”

"And we also searched Wang Jinshan's house at that time, and there were almost no flowers in their house, just some lawns in the yard. ”

When Officer Wang heard this, he also nodded slightly, and said, "If this is the case, then where did the pollen come from? ”

"It's that after Wang Jinshan was drowned in other places, he didn't know it...... Moved to the pool of Wang Jinshan's home to create the illusion of accidental drowning. ”

After all, it's about applying what you've learned......

In today's training class, I just talked about the relevant knowledge, and Officer Wang was able to connect with it immediately.

Liu Zhiqiang nodded slightly: "That's right, there are no flowers at home, how can there be flower crumbs in the nails, the swimming pool at home is definitely not the first scene." ”

The scene quickly began to be discussed.

Gu Chen sat back on the testing table, observed the pollen substances through the microscope, and then turned his head and asked Zhang Hui: "Instructor Zhang, the time from Wang Jinshan's return to his home to his accidental death is very short. ”

"If that's the case, then the flower should be growing nearby, does your lab have data on file for this?"

"This ......" Zhang Hui was stunned for a moment, and was suddenly asked by Gu Chen's question, and he was also embarrassed and said: "Pollen data, there were some before, but it was not comprehensive. ”

"If you're talking about water quality data, we have a lot of it in our lab. ”

"That's not the point anymore. Gu Chen stood up directly and said, "This pollen should be the multiplying organ of gymnosperms and angiosperms, it is very small in size, and it takes the help of a microscope to see its structure." ”

"However, the shape of pollen varies from plant to plant, and the family, genus, and species of the plant can be identified according to the shape and size of the pollen, symmetry and polarity, the structure of the pollen wall, and the carvings on the surface. ”

Looking at Zhang Hui, Gu Chen said again: "The pollen of most plants is easy to collect, and it can be preserved for a long time without losing its vitality, and this plant should be nearby, I want to go over and investigate it, collect the nearby flowers, see what they are, and judge the location of the crime." ”

"But...... It's a needle in a haystack. ”

Zhang Hui just wanted to pour cold water, but Gu Chen directly opened the map on his mobile phone, lit it up in front of Zhang Hui and said: "Instructor Zhang, I have already checked, Wang Jinshan's home is backed by a small hillside, there are very few places with water there, only a park pond, I want to go there to see, maybe this location is the first crime scene." ”

"You seem to have some truth in what you say. Hearing Gu Chen's analysis, Zhang Hui nodded silently, then looked at He Wenjun and said, "Old He, what do you mean?"

"I think it's doable. He Wenjun said.

"That's good. Seeing that the two had reached a tacit understanding, Zhang Hui took a deep breath and said, "I will try to study this pollen structure as much as possible to determine which category as soon as possible." ”

"You should go to this park pond first, and maybe you can make some new discoveries, and if there are flowers on the edge of the pond, you can pick them as specimens. ”

After thinking about it, Zhang Hui said again: "Remember to number the flowers and locations you pick." ”

"Understood. Gu Chen nodded slightly, but suddenly remembered that this was the boundary of the Yangcheng Police Force, so he asked He Wenjun with an inquiring tone: "Officer He, I don't know if there is a chance to partner with your second criminal investigation team." ”

"Of course you can. ”

Gu Chen asked for battle, and He Wenjun was of course willing.

After all, it is an investigation work, and the main task requires more manpower, so one more person is one more strength.

Besides, Gu Chen's training class, the evening belongs to the self-study time, and it does not delay the class, so it is also a matter of course.

After reaching a cooperation intention, Gu Chen hurriedly walked to the locker in the testing room, found more small forensic bags, and then said: "That's without further ado, we'll set off immediately." ”

......

......

He Wenjun and Liu Zhiqiang drove Gu Chen's team and many police officers from the second criminal investigation team to the place of Wang Jinshan's death.

This area is a mature community, developed earlier, and the housing structure is relatively old.

I heard that the knowledgeable police officer said that this place was a villa that Wang Jinshan bought when he first started.

Of course, later Wang Jinshan also bought more villas, which is also a later story.

However, since leaving Jiangguan Fund, Wang Jinshan has been off to a bad start, and the fund's performance has been losing money year after year.

When Wang Jinshan really can't hold on, he will choose to sell a house to relieve the huge financial pressure.

If it weren't for the fact that he bought more houses in those years, today's Wang Jinshan would have collapsed long ago.

In addition, the housing prices in Yangcheng are extremely high, which also gives Wang Jinshan a chance to buffer.

It is said that a listed company invested by Wang Jinshan was in difficulty and was on the verge of bankruptcy.

In order to save this listed company, Wang Jinshan sold a school district house in Yangcheng, and then the listed company on the verge of bankruptcy came back from the dead, and the profit difference between the purchase and sale of the house price exceeded the total profit of the listed company in three years.

At that time, the crisis never existed alone, and the poor performance of the funds under his management made Wang Jinshan have less and less capital in his hands to turn the tide.

With the successive sales of houses to save the market, Wang Jinshan's wealth accumulated over the years has almost been emptied.

However, because this villa is the first villa that Wang Jinshan earned from working in Jiangguan Fund, the significance to Wang Jinshan is very important, so it is intact and preserved.

So much so that Wang Jinshan has always liked to live here.

After learning about the situation of this villa from the police, Gu Chen crossed the cordon and entered the pool where Wang Jinshan drowned.

At this moment, the water in the pool seemed to be a little muddy, and Gu Chen investigated the surrounding monitoring, but found that there was no monitoring here, so he couldn't help frowning.

"What's the situation?, there is no monitoring around this kind of mansion?" Gu Chen asked He Wenjun.

He Wenjun also hurriedly explained: "There used to be, but later when we investigated here, we also asked Wang Jinshan's assistant. ”

What he meant was that Wang Jinshan particularly disliked setting up surveillance in the courtyard, because there was a swimming pool in the courtyard, and if there was a problem with the surveillance, it would be easy to expose privacy. ”

Therefore, in Wang Jinshan's home, only the road intersection in front of the door has a surveillance, and other places, because they are afraid of privacy, have been called out by Wang Jinshan. ”

"Withdrawn?" Hearing He Wenjun's words, Officer Wang also couldn't believe it: "Although for a financial tycoon like him, who he has met, who he has discussed with and what cooperation he has discussed, or who he has done at home, these are all private. ”

And any gossip is likely to affect the trend of his fund, so these people are usually very cautious, and it is not unreasonable to remove the surveillance cameras in the courtyard. ”

"Yes. A police officer with a Cantonese accent also said: "This is true, especially since we people in Guangdong Province are used to speculating in stocks and funds." ”

"But all the bigwigs and senior management of these listed companies must be strict with themselves, otherwise the slightest lace news will have a negative impact on the company, and the stock price fund will fall all the way. ”

"So these bigwigs usually pay attention to personal privacy, probably because they are afraid of hackers invading the monitoring system, this kind of thing has happened before. ”

"So that's the case?" Officer Wang heard this, so he didn't care about it anymore.

It just feels like it's a double-edged sword......

Gu Chen walked all the way along the guardrail and found that there were two obvious friction marks on the wall of the fence in a low position.

Then Gu Chen squatted down and checked the situation on the floor tiles, and sure enough, he found that there were also two traces of friction on the floor tiles.

Looking at Gu Chen's happy expression, He Wenjun stepped forward and asked Gu Chen, "Officer Gu, have you found anything?"

"Come and see this. Gu Chen didn't give a direct answer, but gave up a position and showed only He Wenjun the friction marks on the walls and floor tiles.

He Wenjun frowned, and quickly approached the trace, and only after repeated confirmation did he look at Gu Chen in surprise: "What do you mean...... This trace of the ladder is caused?"

"That's right, and it's still new. Gu Chen also responded directly.

Hearing the words of the two, Lu Weiwei, Officer Wang and Liu Zhiqiang on the side also hurried over.

"Is there a new discovery?What ladder?" Lu Weiwei stepped forward to observe, and instantly understood what Gu Chen meant, and said with a light smile:

"Senior Brother Gu, what do you mean...... It is very likely that the murderer used a ladder to climb over the fence through this location and transport Wang Jinshan's body to the pool?"

Gu Chen didn't speak, just nodded slightly.

But Liu Zhiqiang, who was standing on the side, said: "Then why don't you go through the gate?"

He Wenjun knocked on Liu Zhiqiang's head: "Stupid, wouldn't it be more troublesome to walk through the gate and deal with traces or something?"

"On the floor, on the doorknob, if there is a little trace, do you think it will be easy to deal with it in a short time?"

"Well, that seems to be the case. After Liu Zhiqiang observed the traces near the wall, he suddenly realized: "If the body is transported at this location through a ladder, it will save a lot of trouble in cleaning up the traces." ”

"After all, the courtyard is not as particular as at home, leaving a small trace, and it is difficult to be noticed. ”

When Gu Chen heard this, he also nodded slightly: "What Officer Liu said is very reasonable, the reason why the murderer did not enter through the gate was also for unnecessary trouble. ”

"After all, leaving a little trace in the room, in the eyes of the police, it is also infinitely magnified, and the murderer will not be so stupid. ”

Listening to Gu Chen's explanation, Lu Weiwei seemed to understand the truth, so she took a few steps back, suddenly kicked her right leg back, grabbed the ground with the ball of her front foot, and quickly rushed towards the wall.

With the help of this kick, Lu Weiwei easily climbed the wall, only to find that near the outer perimeter of the low wall, there was a small forest.

"Senior Brother Gu. Lu Weiwei turned her head to look at Gu Chen.

Gu Chen smiled and asked her, "Did you see a small forest?"

"Hmm. Lu Weiwei nodded and said, "That's true, and the wall is actually not high, if you use a ladder, it is easy to climb over." ”

Gu Chen smiled and said: "That's right, if the murderer climbed over the wall from this location, then according to the map, passing through the grove in front of him is the pond of the park." ”

"In other words, it is very likely that the park pond was the scene of the first crime?" asked Li Zhiqiang.

Gu Chen responded directly: "At present, this is the case in theory, but we still need to collect flowers by the lake as specimens and hand them over to Instructor Zhang, so that Instructor Zhang can screen and compare, so as to find out the location of Wang Jinshan's real death." ”

"Then what are you waiting for?" Officer Wang was a little impatient, and the scholar Lu Weiwei's running action just now jumped up easily and directly over the wall.

They were followed by Gu Chen, He Wenjun, Liu Zhiqiang, and many more police officers.

Everyone searched along the path, and on the road, they also found many new footprints, which were photographed and measured by Gu Chen, and various data records were made on the new footprints.

When he came to the pond in the park, what surprised Gu Chen even more was that there were indeed many flowers by the lake, but they were also distributed in small areas, which brought convenience to everyone's search for work.

Gu Chen pointed to the right side and said, "Officer He, the three of us look along the pond on the right, and you go to the left." ”

"Yes. He Wenjun readily agreed.

Afterwards, everyone parted at the entrance of the trail and looked for flowers by the lake.

Gu Chen first came to the first place full of flowers;

After a careful search around, I found that there are two types of flowers.

Gu Chen didn't hesitate, and directly took out the transparent forensic bag, and put two of the flowers in the two small transparent forensic bags.

Pick up the rocks on the ground, mark the number of the search location at the location near the lake, and then move on to the next search location.

It wasn't until Gu Chen walked along the lake and came to the third place full of flowers that he found that this was a deep-water embankment, and the river bank was perpendicular to the water.

Gu Chen frowned, and used his specialization-level observation power to begin to focus on the lakeside embankment.

But just as he was walking along the lake, when he was about to finish walking to the flower growing place, Gu Chen unexpectedly found that there seemed to be some deep scratches in a piece of soil on the bank of the river.

Gu Chen hurriedly squatted down and took a picture of the scratch with his mobile phone.

Lu Weiwei, who was searching another location on the riverbank, noticed Gu Chen's small movements, so she hurriedly stepped forward and asked, "Senior Brother Gu, have you found anything?"

"Let's see what this is?" Gu Chen also gave up a position and pointed to the fat scratches on the embankment.

Lu Weiwei frowned slightly, and hurriedly squatted beside Gu Chen, only then did she say in shock: "This ...... Isn't this a finger scratch?"

"Scratching traces?" Hearing that Gu Chen had found something here, Officer Wang also hurried over.

Gu Chen nodded slightly, and said with a serious face: "That's right, it is indeed a scratch of a human hand, and have you noticed it, this scratch is in the opposite direction, it is grabbed from the lake upwards." ”

"I'll see. Reminded by Gu Chen, Lu Weiwei hurriedly stretched out her palm to compare.

The hesitation mud marks are not particularly obvious, so after Lu Weiwei compared, she really found the merits, and suddenly said with a look of surprise:

"That's right, it's from the lake and you see, it's a little high on the outside, and it's very deep on the inside, and it's obviously a mud puddle in the shadows of a few fingers. ”

"Desperately grabbing out of the lake?" Officer Wang frowned slightly, then looked at the flowers around him, and suddenly said: "The lake is still full of wild flowers, is this the place where Wang Jinshan died?"

"Basically, yes. Gu Chen plucked a few wildflowers next to the mud marks, as if they were in a small transparent forensic bag, and then specially drew a circle with a pen on the periphery of the number.

"In order to complete the examination, we also had to walk the lake around to make sure that there was only this scratch around the entire lake. ”

"No problem. Although Lu Weiwei knew that based on this, it was already obvious that everyone's previous inference was correct, and it was indeed possible that Wang Jinshan was drowned here.

That is, at the same time that Wang Jinshan was about to drown, he desperately grabbed everything that could be grabbed on the shore and tried to climb up.

That's why there is mud and pollen powder in the cracks between Wang Jinshan's fingers.

"But what is stopping him from surviving? murderer?" Lu Weiwei thought thoughtfully.

......