Zhou Ning was a little gloating on the side, in the morning, you fainted with blood, and called Zhou Ning's whole thing an embarrassment, now it's okay, forcing Lai Lai so much, it's not an arch fire.

But it seems that the price of this car is ridiculously high.

Xu Dayuan's gaze was like a knife, and it had already fallen on Zhao Xinli.

Zhao Xinli shrunk his neck, bared his teeth and hurriedly held up the picture in front of Xu Dayuan's eyes, but the person hid far away.

"Don't worry, I didn't find it, it's a little unbelievable, you see it's this Nissan GT-R2010 model, the price of the standard version of the naked car is 1.48 million yuan, the mess adds up, and the landing is 2 million small!

It's not a Mercedes-Benz BMW, it's so expensive, others don't understand, it's lonely to show off, it's still a two-door four-seater, crowded and crowded, and the chassis is so low. ”

Zhao Xinli babbled for a while, and as soon as Xu Da raised his hand, he didn't move in an instant, knowing that he had made an old mistake.

"According to the model of these two cars, go to the overpass on the south side of the North Outer Ring Road to get monitoring from all angles, and if you want to drive from south to north into the North Outer Ring Road, the overpass is the only way, you take a few people to go in person, tell the traffic police, don't tell me that you need tomorrow."

"Don't worry, boss, I'll go now, and I promise to get the monitoring within two hours."

Zhao Xinli stood upright, the heels of his leather shoes crackled, and then he called the criminal police to drive away in two cars.

Xu Dayuan sighed, looked at the scene, and then looked at the physical evidence bag in Zhou Ning's hand.

"Anything else?"

"I didn't ...... Nothing ......."

Zhou Ning clenched the physical evidence bag, before he thought that this thing could be sent for inspection, but according to the time mark in the forensic field study, there was no such thing at this time, and he had never heard of the several tests on it, and the principle could not be explained.

Xu Dayuan raised his eyebrows, with a curious face, he reached out and dragged it to the physical evidence bag, Zhou Ning struggled twice before he had no choice but to let go.

"You kid is mysterious, you think you're hiding something, what is this black slag?"

Zhou Ning scratched his head, his mind quickly searched for words, thinking about how to deal with it.

"This is the particulate matter extracted from the brake tracks, I heard a senior who studied chemistry say that the tire is a single or combined rubber of natural rubber (NR), butadiene rubber (BR) and styrene-butadiene rubber (SBR), and organic or inorganic additives such as vulcanizing agents, accelerators, antioxidants, and fillers are added.

Each brand and series, not even tires of the same batch, or not in the same state of wear, will have a slight difference in the composition extracted from the brake traces.

Using the pyrolysis gas chromatography-mass spectrometry test, we can analyze and compare, and I thought about asking the mentor to see if anyone had done such an analysis, so that we can identify the murderer, which is also an additional layer of evidence. ”

Xu Dayuan, who was carrying the physical evidence bag, was stunned, handed the physical evidence bag to Zhou Ning, and slapped his big hand on his shoulder.

"Xiao Zhou forensics, it's really different to have a culture, I don't understand what kind of tests you said, but I understand the meaning, that is, these brake marks are like fingerprints, and they are not very different, right?"

Zhou Ning nodded.

"Don't worry, I'll find someone to ask you later, I haven't heard of it anyway, but it doesn't matter if you don't have it, you can do it yourself!"

"Huh?"

Zhou Ning was dumbfounded, and Xu Dayuan waved his hand.

"Don't be so surprised, I know a doctor from the University of Liqindao, it seems to be from the Department of Chemistry, and then I'll help you talk about it, if he's interested, it's best, okay, you can go home quickly!"

Trial?

Thesis?

Doctor?

As a scumbag, how could these be delusional things that Zhou Ning dared to do before, he pushed his glasses, and the damn countdown jumped to 47:28 at this time, Zhou Ning made a mistake and looked at Xu Dayuan.

Zhao Xinli went to check the surveillance, but he didn't know if he could find it, maybe he could investigate it from the social relationship of the deceased, and he had to complete this temporary task anyway.

Hey, when you don't get forensic on-site learning, you can also mess around, and it's more than enough to get a second-level application without owing, if you can't finish it, take back a part, then it's uncomfortable, how can you go home.

"Xu Da, I'm not in a hurry, by the way, how about the social relationship investigation?"

Seeing that Zhou Ning was not in a hurry to leave, he smiled.

"When I was involved in the first criminal case, like you, I was too excited, I couldn't wait to eat and live in the police force, I wanted to catch the murderer quickly, but it was useless to be in a hurry in this case."

Zhou Ning was stunned, obviously Xu Dayuan had something to say, and Xu Dayuan lowered his voice.

"The autopsy report does not say that the uterine wall is thin, according to this, we learned about it on the side of the health school, the deceased Su Manli's social relationship is very complicated, and there are several boyfriends who have dated, and the ex-boyfriend and the current boyfriend are also entangled."

Hearing this, Zhou Ning became interested.

It seems that the ex-boyfriend and the current boyfriend have found out their identities, if so, wouldn't it be possible to speed up by checking whether they have the two models they just discovered?

Looking at Zhou Ning's subtle expression, Xu Dayuan didn't understand something.

"Don't get excited, listen to me, this ex-boyfriend is a maintenance worker in Su Manli's father's shop, he has no education but looks good, and he is full of tendons, and he has been brought over for interrogation.

As for this current boyfriend, his identity is a little complicated, his mother is Yang Lihua, the chairman of Lihua Group, he has his mother's surname, called Yang Yufei, it is said that someone went to the airport to pick up people, and I asked people to follow him to the airport. ”

Zhou Ning was a little dumbfounded.

"Repairman? How could Su Manli find a maintenance worker as her boyfriend, her father is not very rich? ”

Xu Dayuan raised his eyebrows.

"You didn't see the man's appearance, okay, don't ask so much, hurry home and rest, tomorrow will be busy."

Zhou Ning pursed his lips, there is no point in following at this time, after all, the current boyfriend has not been brought back, Xu Dayuan feels that it is not good to arrest people directly, this identity does not need to be said.

There was no nonsense, Zhou Ning left, and it was Xu Dayuan who asked a criminal police officer to drive him back.

As soon as he entered the gate of the yard, his grandfather stood in the yard with a broomstick.

Seeing this posture, Zhou Ning hurriedly raised his hand.

"What's wrong?"

The old man carried a broom and walked towards Zhou Ning.

"Aren't you looking at what time it is? Your second uncle called you several times, but you couldn't get through, what did you say you did? ”

As he spoke, the broom head was already coming towards Zhou Ning, and Zhou Ning flashed and raised his hand to catch the broom head.

"I didn't go out to play, I have a case today, I've been busy, my phone was lost in the survey box, and it is estimated that there will be no signal."

When the old man heard this, the hand holding the broom also let go, and Zhou Ning hurriedly put the head of the broom on the low wall, which the old man couldn't reach at this height.

"What's the case? Dead? ”

Zhou Ning nodded.

"Well, the case hasn't been solved, I can't say it's discipline."

In a word, the old man didn't ask again, after all, his grandfather was the village director and his consciousness was very high.

"Hurry up and wash your hands and eat, you call your second uncle again, he went to your house in the city."

When Zhou Ning heard this, he quickly dialed the second uncle's phone, explained a few words, and then hung up, the old man had already put the dishes on the small table in the courtyard.

Zhou Ning washed his hands, leaned over, picked up the rice bowl, and gobbled up the braised mackerel.

Seeing Zhou Ning eating like this, the old man helped him peel two cloves of garlic, sighed and said:

"You're a newcomer, listen and watch more, don't think you don't know what your last name is after reading for two days."

"Master, I listen to Master Xu and Master, after all, they have experience, but my master had a car accident today, and his leg was hit and cracked."

The old man was stunned for a moment, and then his face was worried.

"Then go and see your master, pack up your things at night, you go to live in a house in the city, don't run to your hometown every day, I'm worried about your safety far from work."

Zhou Ning was stunned, you must know that going back to the old house every day, this is grandpa's previous request, it seems that he feels that he is busy, and he is afraid that it will be too much of a toss, but thinking about the case, and the countdown, Zhou Ning is a little tempted.

"Cheng, I'll move over at night, this case is a bit tricky, Master is still injured, I have to be on call, Master, you can rest assured that I'll come back after the case."

The old man waved his hand, and the pu fan in his hand kept waving, fanning Zhou Ning with the wind.

"I'm an old man, I can walk and move, and besides, your second uncle is here, hurry up and eat, your second aunt burned mackerel, and I left a whole one for you."

Zhou Ning smiled, and the wind and clouds ate the mackerel on the plate, and at this moment, there was a sound of parking at the gate of the courtyard, and the second uncle and two aunts walked in.

"Second uncle and second aunt, I make you worried!"

Zhou Ning hurriedly got up and was about to clean up the dishes and chopsticks, but the second aunt hurriedly took it, and the second uncle laughed.

"I heard Xu Dayuan say, your kid is doing well today."

Zhou Ning scratched his head, and the old man waved his hand.

"Don't be stunned, go pack your things and ask your second uncle to send you to live in the city."

Zhou Ning turned around and entered the house, in fact, he brought all kinds of books, the house in the city had already been prepared, it was the wedding room that his grandfather had prepared for him, and his parents died early, and these old men had already prepared it for him.

The second uncle is also in the county public security bureau, he is in charge of logistics, he is familiar with everyone, and he doesn't have much ability, but he is better than his own children for Zhou Ning.

Carrying the suitcase, Zhou Ning walked out of the main house, there was no nonsense on the way, the second uncle sent him to Yuhua Community, he took his luggage and returned home, took a shower and lay on the bed.

The experience of this day made him really tired, and after lying down for less than two minutes and two minutes, Zhou Ning fell asleep.

In the dream, he was sitting in a windowless room with a set of seven books on the table.

The eleven huge characters of the above "Analysis of Second-level Forensic Field Studies" are very conspicuous, the size, the thickness, are daunting, no matter how much he wants to retreat and struggle, he can't move, he can only sit down and look at it page by page.

Case 1......