universal data

Chapter 198 Half Footprint
In the afternoon, Qingcheng Police Office.

Captain Yang stood in front of everyone, looked at the file in his hand, and said in a solemn tone.

"We have investigated the identity of the deceased."

"Decedent's name: Han Xiaoxiao, age: 21 years old! He is currently a junior student at Qingcheng University."

"She has another identity...the daughter of Han Pingfeng, the chairman of Haifeng Group!"

hiss--

Everyone frowned when they heard the identity of the deceased.

This identity...is very tricky!

Haifeng Group is one of the top [-] companies in the country.Profit tens of billions every year!

As the chairman's daughter, Han Xiaoxiao's status can be described as very honorable.

But it is such a girl, but today, it is a pity that her fragrance has faded away.

Captain Yang continued, "According to our investigation, Han Xiaoxiao suffered from a certain degree of depression since she broke up with her ex-boyfriend during her lifetime."

Bai Yan rubbed his chin, took Captain Yang's words, and analyzed, "If a person suffering from depression commits suicide by jumping off a building, it's not such an incredible act. Therefore, the reason why criminals don't kill Han Xiaoxiao in other ways is because Perhaps, it was to make us think that Han Xiaoxiao's death was just a simple suicide!"

Captain Yang nodded, agreeing with Bai Yan's point of view.

"By the way, Detective Bai, have you got the surveillance camera from the shopping mall?" Captain Yang asked.

"I got it. I got it. It's just..." Bai Yan also had a sore face when he said this, "It's just that the surveillance on the top floor was broken a few days ago, so we can't be sure, the specifics of the criminals. who is it."

The surveillance system on the 15th floor was broken, so the police could not know who else had been on the roof besides the deceased.

Naturally, it was impossible to hunt down the murderer in time.

As for the specific murderer by checking the surveillance on the 14th floor.

cough cough...

This is relatively difficult.

On the 15th floor of the commercial building, there is a high-end western restaurant, and the traffic flow this morning alone has hundreds of people.

If you go to check one by one.

Even if all the police force of their police station is dispatched, it will take at least ten days and a half months.

By that time, I'm afraid the criminal would have escaped long ago!
"By the way, Detective Bai, did you find anything on the rooftop?" Captain Yang asked.

"Half footprint." Bai Yan spit out these words lightly. "However, with only half a footprint, the information we can learn is still limited."

"Is there no way to lock down the murderer?" Captain Yang had hope in his eyes.

Bai Yan shook his head with a wry smile, "No. At least not for a short time."

"Then..." Captain Yang took out his mobile phone, "We can only ask for foreign aid!"

…………

Four p.m.

The rooftop of the commercial building where the incident occurred.

Cheng Nuo reluctantly followed Captain Yang and Bai Yan to this place.

"Captain Yang, I'm not as clever as you think. I don't have any clues, so let me help you find the criminal? Aren't you embarrassing me?" Cheng Nuo groaned as he walked.

Originally, Cheng Nuo, who had just treated Mu Leng and Su Xiaoxiao and gained enough favor, was about to send the two girls home.Unexpectedly, Captain Yang called.

After asking that Cheng Nuo was around the commercial building, he asked Cheng Nuo to stay where he was, and he and Bai Yan would be there soon.

Thus, Cheng Nuo, who was in a daze, was led to the rooftop by two big men.

Looking at Captain Yang and Bai Yan, and looking at himself, there was a feeling of a big bad wolf looking at a little white rabbit.

This made Cheng Nuo feel a little panicked.

He subconsciously covered his chest.

There is no one left and right on the rooftop, causing the sky to respond and the earth to fail.

These two guys are not going to...

However, things didn't go as Cheng Nuo expected... Ah bah, it went in the direction he didn't want.

Captain Yang and Bai Yan took Cheng Nuo to a location not far from the high platform on the rooftop.

There, there is a relatively clear half footprint.

Bai Yan pointed to the footprint, "Hmm. This is the clue."

"Next, Cheng Nuo, it's your turn to perform." Bai Yan shrugged.

Cheng Nuo looked down at the only clue left by the murderer at the scene, the footprints, rubbed his chin, and pondered, "It should be size 43."

Bai Yan rolled his eyes, "Of course I know this."

If Bai Yan can't even guess this point, then Bai Yan shouldn't be a police detective here.Just go home and farm.

But the problem is, those customers who came to the 15th floor in the surveillance camera screen, without Cheng Nuo's accurate data ability, it is difficult for Bai Yan to judge which people's shoe size is 43.

Cheng Nuo continued, "A size 43 corresponds to a foot length of 26.5 cm. According to the standard height calculation formula, height (cm) = footprint length (cm) x 6.876, that is to say, the murderer's height is 182.29 cm."

Bai Yan shook his head, "Of course I know what you said. However, using the length of the feet to calculate the height is too accidental. A person who is around 1.9 meters may only have a shoe size of 40. And a person who is less than 1.6 meters Man, the shoe size is probably 44, 45."

"So, the height calculated from the footprints can only be used as auxiliary data to find the murderer. It cannot... be used as the main data."

What Bai Yan said is correct.

It is always difficult to avoid errors in the height calculated by footprints.

If the wrong criminal is caught by any chance, it can really be said that all previous efforts have been wasted.

"Don't worry, let me have a look." Cheng Nuo gave Bai Yan a calm and calm gesture, and fixed his eyes on the footprint on the ground.

Then he raised his head and glanced at the distance between the footprints and the edge of the roof, as well as the height of the guardrail around the roof.In my mind, various data are constantly being calculated and reasoned.

If he remembered correctly, the position where the deceased fell from the building was at the position of this footprint, facing the direction of the guardrail directly in front, after a linear translation of more than ten meters.

The footprints are lighter in color at the toes and darker at the heels.This shows that when the murderer left this footprint, his body was in a state of extreme exertion.If my guess is correct, the murderer must have left this footprint here when he pushed the deceased down the stairs.

The height of the roof guardrail is 1.24 meters.The weight of the deceased was 51.24 kg.Before falling from the building, the deceased obtained an initial velocity in the horizontal direction of 3.85/meter per second.

The distance between the footprints and the edge of the roof is 0.54 meters. According to the location of the footprints, it can be deduced that the way the murderer pushed the deceased down the stairs was...

Cheng Nuo used all the known data in his mind to construct a model.

Then, simulate the force used by the murderer when pushing the deceased down the stairs, the standing position, the appropriate force position, the force method, and the optimal height and weight of the murderer to match this force method. wait……

With this complex data operation.Cheng Nuo had barely managed it, simply... Going back in time!
(End of this chapter)