The private car driver who provided the clue is a local and drove to Longde Village to eat pork intestines and chicken.

In fact, most of the cars in the parking lot that day were there to eat pork intestines and chicken.

Although there are other stalls and snack stands nearby, they only serve the local residents and no one specifically drives there to eat.

Only this pork intestines and chicken restaurant, for some reason, has gained a reputation. People who come to Longli County feel like they have wasted their trip if they don't eat at this restaurant.

The restaurant is always crowded, the food is delicious, and the prices are affordable. It has been popular for a long time, and there is also ample parking nearby.

As for the residents who originally parked there, there were actually very few, and most of them were using their cars for commuting.

Hou Lejia quickly sent a team to the parking lot to investigate the scene and also obtained the records of vehicles entering and exiting the parking lot for comparison with the license plates in the surveillance videos.

Jiang Yuan followed the Longli County Police Dog Team to search for the source of the bloody smell.

The Longli County Police Dog Team currently has three dogs, one of which is in training and is a new intern.

One is a middle-aged dog who is diligent and hardworking.

The other is a meritorious dog named Heizi, who has received second-class honors and even has two bowls for meals. He is as famous as Jiang Yuan, who received second-class honors.

In terms of the application of police dogs, Longli County is somewhat well-known in the province.

They are indeed very skilled. Currently, although Heizi is slightly older and works less, there is a new middle-aged police dog named "Bailin" to take over, and the third generation of police dogs is also in training. It can be said that the three generations of dogs, old, middle-aged, and young, continue the excellent tradition, which is rare in the province.

The one deployed today is Heizi, the meritorious dog.

Heizi's back is straight, and his Doberman's characteristic pointed ears stand upright. He only slightly lowers his head and runs lightly with his footsteps, leading the way towards the place with the smell of blood.

Heizi, who costs 75 yuan per day, doesn't look old at all. It is like a man or woman or lgbtqiapkdxrew who is still fighting on the front line of nightclubs at the age of forty. There is only a flicker of vigor and a look of unwillingness in his eyes.

Woof!

Heizi barked, and seven or eight other dogs followed suit and rushed over.

Jiang Yuan also ran over, being cautious not to let any excited puppies ruin the scene.

It goes without saying that there will always be stupid thieves and careless police officers at crime scenes.

When they arrived, they saw a clear channel with no obvious bloodstains.

"I guess the suspect changed his bloody clothes here." Captain Zheng Xiangqian of the Heavy Oak Team also came over, looked up to find the location of the surveillance cameras, and made a judgment. He then squatted down and sniffed the ground, stood up and said, "There's also urine here."

Heizi barked twice, probably not happy about someone taking over his job.

Jiang Yuan suddenly realized, indeed, if the suspect didn't change his clothes, and drove into the county with bloodstains on him, it would cause trouble. Changing clothes in the parking lot is a suitable place.

At this time, a young detective speculated, "Did he bring clothes with him, indicating premeditated murder?"

Jiang Yuan glanced at him.

This person belongs to the not-so-smart type, and his active participation indicates that he doesn't think he is not smart.

"Premeditated murder? Carrying clothes but not weapons?" Zheng Xiangqian replied with his head down, sealing off this line of thinking.

This is a matter of investigation. He cannot let a foolish child interfere.

From the current evidence, the possibility of premeditated murder is very low. Moreover, the most basic point is that the suspect already has a car, so why would he plan to kill an old scavenger?

If there is a grudge, then it must be with a weapon that can quickly kill someone. Even if it's just a beating to vent anger, it can be better prepared. Planning to park in the parking lot is too foolish.

No one paid much attention to the words of the foolish child.

Jiang Yuan put on his mask and took samples from the clear channel with the local forensic team.

The clear channel had a slight stench, but to be honest, after removing the body, what does it matter to clean a clear channel? The smell of urine in the clear channel had also faded the next day.

The only thing that was a bit uncomfortable was that the work environment was too outdoors.

The people coming and going in the parking lot, as well as the gaze of the police dog Heizi next to him, made Jiang Yuan feel a little embarrassed.

After collecting the samples, Jiang Yuan stared at Heizi for a while.

It's just that this dog is not familiar. If Strong dared to stare like this, Jiang Yuan would have scolded him.

"That's enough."

Jiang Yuan put the sample box in the car and said to Zheng Xiangqian.

Although these things may not be needed during the investigation phase, they can still play a certain role in the litigation stage. When facing stubborn resistance from lawyers, some of these things can be very useful.

Of course, it's also good to take them back for DNA testing and compare them with the DNA Jiang Yuan had previously wiped. It adds an extra layer of insurance.

A group of people came excitedly and left disappointed. Not to mention the expected bloody clothes and murder weapon, they didn't even find any small gains.

Fortunately, the police who went out on another line brought back good news.

Not only good news, but also the suspect, the car, and a bunch of other miscellaneous physical evidence!

"So, the person has been caught?"

Wu Jun, who woke up after a nap, came directly to the Criminal Police Brigade from the hotel.

Jiang Yuan replied with an "Hmm" and said, "He is currently being interrogated. He is a young man in his twenties."

Wu Jun glanced at the young man Jiang Yuan and said, "So it's a crime of passion?"

"It seems to have been repeated." Jiang Yuan shook his head and said, "I just saw the Heavy Oak Team go out, they should be investigating and collecting evidence."

"Why collect evidence? They already have so much blood in the car. The murder weapon?"

"The murder weapon and bloody clothes were burned together. They said it was a plastic water pipe used for renovation, a PPR hot water pipe, that's what I heard them say." Jiang Yuan replied, and then said, "They didn't burn it completely, the remnants were also collected."

Wu Jun chuckled a bit, whispering, "This guy is somewhat resourceful. The murder weapon has always been a tricky issue. Even if it's not professionally handled, he should have practiced more. How did he burn it? Where did he burn it?"

"At a camping site, he lit it up in a large iron barrel." Jiang Yuan was equally curious.

Eliminating evidence is something that clever minds have been attempting throughout history.

Interesting choices include a dagger made of ice, which melts after the murder, leaving no weapon to be found (this is not a science lesson... do not learn from this).

A stick made of plastic is a similar ingenious idea, but it's not as direct when used for murder. There's too much black smoke when it burns.

Two police officers from the Eucalyptus squad who were out on duty returned hurriedly with a young girl.

The girl was between 18 and 48 years old, with light makeup, wearing trousers and a white t-shirt, looking very clean. Her high ponytail was a bit fluffy and playful.

Jiang Yuan and his apprentice exchanged glances, understanding that the interrogation was reaching its final stage.

The newly arrived girl could be a witness or something else.

While Jiang Yuan was still guessing, Wu Jun went straight into the interrogation center to watch the surveillance video.

Jiang Yuan didn't feel like going. There were too many people inside, and he wasn't in such a hurry.

After a short while, the girl came out and left without hesitation.

It was quite a while before Wu Jun came out with a serious expression.

"What is..." Jiang Yuan couldn't help but be curious.

Wu Jun sighed, motioned with his mouth, and said, "Let's go outside for a smoke."

Jiang Yuan swiftly opened a pack of Zhonghua cigarettes, handed one to Wu Jun, and lit it for him.

Wu Jun took a deep puff, exhaled the smoke, inhaled it back, exhaled again, and then said, "The murderer is a young man we caught today. The motive... is not what we thought."

"Is it because of that girl?"

"Yes, after the young man separated from his companion, he saw this girl and started pestering her for her WeChat. When she refused, he followed her, and was seen by a scavenger named Zhang Hong."

Wu Jun took another puff of his cigarette, exhaled, and continued:

"Zhang Hong tried to stop the suspect, and the girl took the opportunity to run away. The suspect became angrier and angrier, so he chased Zhang Hong to his home and killed him."

Jiang Yuan was taken aback, "Just for that? He couldn't stand it?"

"What bothers me is not just that." Wu Jun glanced in the direction of the gate, "The girl who was harassed didn't call the police afterwards. When the police questioned her yesterday, she didn't say anything..."

Jiang Yuan was silent for a few seconds.

There's no legal requirement to repay a favor.

If someone doesn't want to repay a favor, there's nothing the police can do.

Jiang Yuan asked, "So how did you find this girl? Did the suspect tell you?"

"Yes." Wu Jun sighed, "Otherwise, we wouldn't be able to determine the cause of death. Both of them couldn't explain it."

Jiang Yuan knew that the two people Wu Jun was referring to were the suspect and Zhang Hong.

Feeling frustrated, Jiang Yuan kicked the step in front of him, causing a slight pain in his toe.

The secondhand smoke was a bit choking, and he couldn't help but cough.

Wu Jun, however, was staring into the distance with a distant look in his eyes.

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After finishing his cigarette, he stubbed it out, patted Jiang Yuan's arm, and said, "As long as we solve the case, that's enough. The rights and wrongs of the world are too complicated to untangle. Let's just do our job well."

Jiang Yuan responded, "Okay."

"Master, how about we go have some pork intestine and stomach hot pot? It's pretty good."