bedroom!

Chen Ting, wearing Teacher Xiao Gao's crystal bracelet, curled up in bed, checking the technician's identification report on spores and pollen on his phone.

Pollen is the general term for spores and pollen.

Pollen comes naturally from plants.

Spores come from fungi such as mushrooms.

Like the remains of insects, twelve years later, most of the pollen has decayed and deteriorated.

Very little structure remains.

Of course, technicians also collected a small number of basically intact spores and pollen.

This is mostly because the gasoline and other liquids that are integrated into the interior of the car are preserved intact.

Some spores come from aquatic microorganisms.

It thrives inside the sedan and the structure is also complete.

The key is!

The incident happened in mid-April, a time when everything was thriving and full of life.

This is the time with the most pollen!

Therefore, judging purely from the number, there are quite a few relatively complete spores and pollen.

Chen Ting found the subdivision of "Palynology" in the Plant Detective Science section of the Skills column.

He read the technique instructions carefully, and his eyes soon lit up.

“This pollen is obviously different from forensic geology and entomology.

It can determine the driving trajectory of a car within a small area."

Because there are so many types of plants and fungi.

Different types of pollen have unique morphological characteristics.

Just like human fingerprints!

Of course, there are also many types of insects and minerals.

But the greatest advantage of palynology is not the study of a single pollen grain or a single spore.

After all, the distribution of plants and fungi is also very random.

A plant that is only distributed in a certain location and rarely appears.

Therefore, it is difficult to obtain useful conclusions in an investigation based on pollen alone!

The most powerful thing about palynology is that it can study the combination of spores and pollen.

That is, pollen and spores combine together to form a pollen mass.

This pollen mass contains the characteristics of many types of plants and fungi in the same area.

It is specific!

Even if the two areas are very close to each other, the types of plants and fungi are exactly the same.

But the numbers can’t be exactly the same!

Therefore, the proportions of different spores and pollen in a pollen mass are also different.

To put it simply!

A specific type of pollen mass that exists only in a specific area.

Based on this, the criminal's movements can be inferred within a small area.

This is the most widespread application of palynology.

"interesting!"

Chen Ting had always thought that pollen and spores were studied individually.

This clearly underestimates palynology!

and!

The criminals kidnapped and sent ransom letters on April 22, 22 years ago.

The investigation team checked the pond three times.

There is a gap of about 17 days between the two!

In other words, from April 22 to May 9, Hummer was fighting guerrilla warfare.

In the past half month, the types of flowering plants have changed rapidly.

The types and proportions of spores and pollen in the pollen mass must also be changing rapidly.

This is very helpful for identification!

"This palynology is perfect for this case."

The most important thing is!

Judging from the identification report, the technical staff of Chaoyang Public Security Bureau are not very proficient in palynology.

A single piece of fresh pollen they could identify.

However, if only incomplete structures or complex spore masses remain after decay, it is difficult for them to identify them.

And there are so many types of plants and microorganisms.

Even the most professional botanists cannot master the pollen characteristics of all plants.

therefore!

Even if the pollen is fresh, if it is not from a common plant, identification personnel will need to seek help from experts.

This is especially true for microbial spores.

“If I exchange it for palynology, I can gain relevant knowledge.

It’s much more convenient!”

Is there any need for exchange?

Shen Ting sorted out his thoughts.

“The criminal at that time hid in the suspicious area for more than half a month.

It is unlikely that he will stay in one place and not move, as the police are conducting a comprehensive search.

It is impossible to keep driving to avoid it, you always need to take a break.

Therefore, the criminals are likely to have one or more bases.

I will change my hiding place according to the progress of the police search."

so!

Determining the driving trajectory is secondary.

After all, it has been twelve years since the last clues were left on the road. Even if they were there, they would be impossible to find again.

Relatively speaking!

If we can find the criminals' base, we might be able to make some discoveries.

Because the base must be very remote and sparsely populated.

The probability of remaining clues is higher.

“Logically, no problem!

But whether there will be a good result in the end depends more on luck.”

If palynology were free, it wouldn't matter.

But the reality is that skill points are needed to redeem it.

And even though it is just a branch of plant detection, it is not cheap and requires 10 skill points.

If you exchange for palynology, but like a Hummer, you can't find enough direct physical evidence, you will be in trouble.

The key is!

Shen Ting now has only 12 skill points in total.

If you exchange for palynology but cannot solve the case, you cannot exchange for other skills without additional skill points.

The next case will be troublesome if other skills are required.

“Oh, that’s right!

As for the base, the first requirement is concealment.

It seems to be similar to dumping corpses and cars.

Hannibal and his men might be able to directly locate the base.

This way, wouldn't it save skill points?"

Shen Ting left a message directly in the group.

Hannibal: "The principle is indeed similar."

Jigsaw: “There are nuances.

They threw away corpses and cars, and what was thrown away were dead things.

And the hiding base has living people in it.

And it needs to be able to hide multiple people, or even multiple cars.”

Kira Yoshikage: “You can give it a try.

It just so happens that the area has been explored almost completely before, so there's no need to waste any more time."

After handing in the task, Shen Ting fell asleep happily.

No words all night!

The weather is getting colder and the dawn is coming later.

At seven o'clock in the morning, Chen Ting woke up with the sun.

Pour a handful of cold water to wake yourself up.

While washing up, Shen Ting asked in the group:

"How is it, has the base produced any results?"

“Got it!”

"There are results!"

“Got it!”

Hannibal, Jigsaw, and Kira Yoshikage all spoke in unison.

The three of them then uploaded the pictures in the group.

They all circled the suspicious areas drawn by Shen Xu, and the places they thought could be used as criminal bases.

When Shen Ting saw the picture of the three people, he stopped brushing his teeth...