In the criminal investigation detachment, a murder is an order.

There is a homicide, and everything has to make way for the homicide.

There is no time limit for overtime, and all vacations are canceled, every time.

The last time Zhang Wen's murder occurred, there were two front-line criminal policemen who were on vacation, who had just gotten off the plane and had not yet left the airport, and bought tickets and flew back.

As for airline ticket reimbursement......

Don't think about it, a vacation is not a business trip, how can it be reimbursed.

The criminal investigation detachment is very poor, Lu Chuan heard about it when he first went to work, and he heard about it more than once.

And look at those old toothless cars, you can also see it.

The equipment is old-fashioned, and the detachment building has not been renovated for more than 20 years.

The decoration style gives Lu Chuan a feeling of returning to his childhood.

The floor of the building rattles when you step on it.

This is also the reason why in the field survey office, the four people use enamel jars so harmoniously.

The environment is the environment of that era.

Except for some labs that have been invested and built in recent years, which are a bit modern, the others are really old and can be used to make nostalgic movies.

However, the criminal investigation detachment is also really rich sometimes.

For example, now, when a murder occurs, it can be said that regardless of the cost.

Human, material and financial resources, no need to apply, use directly, and give what you want.

As long as you can solve the case.

Standing outside the building, the entire building of the criminal investigation detachment was still brightly lit.

Quite a few people come and go, in and out.

It's past three o'clock in the morning, and it's not as quiet as it used to be.

"Master, it's done."

With a yawn, Lu Chuan handed over the four reports to Liu Guodong.

That's the benefit of having technology for your own people.

said that if you do an appraisal, you can get out without eating, drinking, or sleeping overnight.

In the past, these things had to be helped by the traffic police detachment.

"Two sedans, one SUV...... And a van? ”

This is the vehicle information for the four groups of tire tracks in the four reports.

Lao Bai and Yang Sen also came over and began to flip through the report.

The two of them couldn't help much, and had just slept on the couch.

Now the head is in good spirits.

Actually, for Lao Bai and Yang Sen, this kind of overtime that can't take leave to go home is very good.

Needless to say, at this age, all kinds of parts are not working from time to time, and you can't do anything when you go home.

Yang Sen has been tortured enough by his daughter-in-law and son in the past year.

Menopausal wife, son who is about to take the college entrance examination, Yang Sen feels that nothing is more terrible than these two.

Now I can rely on the murder case, stay in the office, smoke Huazi cigarettes, and don't be too chic.

No one wants to have a life case, especially a case of sacrifice like Song Kun.

But from the perspective of whether to go home or not, Lao Yang obviously has his own opinions.

Lu Chuan lit a cigarette for himself, and this night, he had already eliminated a pack of cigarettes.

No wonder most of the detectives are old smokers.

There is a high probability of staying up late.

"Two off-road vehicles," Lu Chuan paused: "Actually, it should be an SUV model to be precise, one has a wheelbase of 2550 and the other is 2560, both of which are compact SUVs." ”

"The tire width is 205, the flat ratio is 60, and most SUVs and off-road vehicles with this tire are relatively low."

"I don't know much about the price of the model, so I can only make a general guess."

"And both cars are two-wheel drive."

"As for the van, the tires are badly worn, the pattern is very shallow, the pressure of the four tires is uneven, and one of the tires is not the same as the others."

"This is supposed to be a cargo van, and it is estimated that it will be relatively old."

Lu Chuan pointed to the last report: "This report ......"

"I recommend it as a key target."

"Oh, why?"

Liu Guodong took out the last appraisal report for the car tire and read it carefully.

"Because there is something special about the tire tracks of this car."

"This set of tire tracks, the front and rear wheels have different tire widths, which is rare in domestic cars."

In the report, it is recorded that the front tire width of this group of tires is 245 and the aspect ratio is 45, while the tire width of the rear wheel is 275 and the aspect ratio is 40.

There are strict standards for the production and use of tires.

What kind of vehicle, what kind of tires are used, when the vehicle leaves the factory, it will die.

Generally, it cannot be changed at will, and after the change, the handling, safety and comfort of the vehicle will be affected.

Moreover, changing the size of the tire involves modification, which requires the approval of the record before it can be put on the road.

Lu Chuan continued: "The flat ratio of a tire refers to the percentage of the height of the tire's cross-sectional height to the maximum width of its cross-section, which is simply the height-to-width ratio of the tire. ”

"Tires with a high aspect ratio are relatively comfortable due to their long sidewall and strong cushioning capacity, but they have a poor feel to the road surface and have weak lateral resistance when cornering."

"Tires with low aspect ratio and large inner diameter, due to the short sidewall and wide tread, have a large ground contact area, the tire can withstand high pressure, are very sensitive to the road surface, have strong lateral resistance when cornering, and have strong vehicle handling."

"This car not only has a small flat ratio of tires and wide tires, but also has narrow front wheels and wide rear wheels, which is generally only designed for vehicles that pursue extreme driving control, and most of them are imported cars."

"As far as I know, among the common brands, only BMW and Jaguar will have this kind of tire design in production cars."

"Based on the tread drive of the tires, it can also be determined that the car is a rear-wheel drive model, which is more conducive to improving vehicle handling."

"Under normal circumstances, the ravine around Xinjian Village, the probability of such a car appearing...... Not too. ”

After Liu Guodong listened, his eyes lit up.

That's right.

In the ravine near Xinjian Village, there is such a car that pursues the ultimate control?

"Xiao Lu Xing, you also said that you are not familiar with the model, don't you understand it."

The old white tsk tsk, and there was joy on his face.

Since Lu Chuan came to the investigation, the investigation office has played an increasingly important role in solving the case.

Originally, there were many resources in the field survey, but now they play a big role, and the face is very good.

Anywhere, the amount of resources mastered and the size of the role played are never directly proportional.

Lu Chuan grinned, he really didn't study much about vehicles.

The reason why he knows more about this special model is because he has one of these cars.

Due to the different sizes of the tires, the front of the vehicle is low and the rear is high, and the visual effect of the appearance gives people a very powerful feeling, and the visual effect is full.

It's just a little expensive.

The identification and analysis reports of the four groups of tires were quickly sent to Qin Yong.

Qin Yong, who had been staying up for most of the night, had red eyes.

However, the progress of the case is still effective.

In particular, Lu Chuan's footprint analysis delineated the scope of suspects, which provided a very useful reference for the criminal police on the front line of investigation.

Although there has been no substantial progress yet, it is better than a blind man touching an elephant, with and without a target range, not only the suffering of reconnaissance.

There is also the morale of the front-line criminal police, which is a good incentive.

Just like a teahouse or clubhouse, only by constantly serving new tea, will tea lovers continue to come to experience and taste it.

Just a few black teas, green teas, and oolong teas over and over again, business will definitely get worse and worse.

Human beings are like that, and curiosity is the original sin of all desires.

Tasting tea and solving cases are all the same thing.

Finding someone who doesn't know what kind of person it is in the vast sea of people is different from finding a man and a woman who determine their height and weight.

Qin Yong, who saw the tire trace identification report, had a green light in both eyes.

As Lu Chuan guessed, how could this kind of car go to the ravine?

The field is a place where no one looks, it's too remote.

"Someone!"