Evening.

The red glow in the west was shining with a red light; the evergreen trees on the roadside were swaying with green branches; the green ivy on the wall was towering with green leaves.

In the garage.

Under several cars that had been gutted, there were wriggling human bodies wearing jumpsuits.

Du Lei took Jiang Yuan directly to the traffic police detachment.

The traffic police detachment in Changyang City was also not short of funds. Several years ago, they bought four sets of standard traffic accident scene investigation equipment and two sets of enhanced traffic accident scene investigation equipment in one go. Compared with the bits and pieces purchased by the Criminal Investigation Detachment's scene investigation squadron, the equipment in the traffic police detachment's equipment bag was much more complete. There were portable multi-band light sources, biological discovery instruments, ultraviolet digital cameras, portable microscopes, chassis investigation instruments, vehicle EDR data readers, etc. used for extracting physical evidence.

Comprehensive and professional equipment is the basis for comprehensive and professional investigation. However, these equipment also require comprehensive and professional requirements for the scene investigators.

Du Lei brought Jiang Yuan here to let him see and know the difficulties.

Then, he took Jiang Yuan and wandered around the traffic police detachment's garage, saying, "What do you think? If you really want to dismantle the car, you have to use professional equipment and instruments. To be honest, there are some things here that I am not very familiar with. I have to learn and use them now. Those who can handle the whole set of equipment in the traffic police detachment are all old masters. Unless the head of the detachment invites someone, it is possible to hire them."

Jiang Yuan heard Du Lei's meaning, scanned around, and then felt more confident before saying, "Anyway, I don't have anything else to do, so I'll stay here to dismantle the car."

"Do you know how to use these devices?" Du Lei asked.

"Most of them. Like this portable multi-band light source, it's similar to what we use in scene investigation to find body fluids, hair, fibers, glass fragments, dust, handprints, footprints, etc. It has a xenon lamp and 13 bands..." Jiang Yuan demonstrated how to use it as he spoke.

The people in the traffic police detachment had been notified and watched Jiang Yuan operate skillfully without saying anything.

Jiang Yuan demonstrated two more devices easily, and then stopped and said, "I also need to borrow a trace evidence exploration box. I need surgical instruments, an X-ray detector, and it would be best to have a trace vacuum cleaner..."

Du Lei watched and listened, gradually calming down, and then said with a swing of his waist, "You guys don't have anything in your county, but you know everything?"

Jiang Yuan smiled and said, "I learned a bit before."

"Okay. I'll ask the captain to find you a set." Du Lei sighed and then laughed, "It would be amazing if you could find clues through this car."

Du Lei took out his phone and called back, asking someone to bring Tan Yong's Pajero directly to the traffic police detachment, and at the same time, asked someone to find a trace evidence exploration box...

"Now, we can only find clues through investigation and reasoning."

Liu Jinghui faced everyone and gave the order resolutely.Including hundreds of criminal police officers and auxiliary police officers, including Wei Zhenguo and Mu Zhiyang, they loudly agreed to go to investigate hundreds of enterprises, units, and engineering projects related to the road and bridge group in the surrounding area.

According to Liu Jinghui's theory, to form an effective plan for abandoning corpses, or in other words, to have a stable channel for abandoning corpses, there must first be a stable channel. Therefore, short-term engineering projects are not the focus of this investigation.

However, Liu Jinghui himself is not clear about what the real focus is.

He sat in the office, thinking carefully about the information gathered from all sides, especially the investigation records.

After a while, Liu Jinghui stood up again, took a pen, and drew circles on the map on the wall.

There was no one in the office, and Liu Jinghui muttered to himself as he pondered:

"A stable channel for abandoning corpses, the transportation cannot be too bad...no, since the number of trips is not too many, too much bumpiness is definitely not good. No matter how the body is packed, there cannot be a risk of leakage. In that case, too remote mountain roads cannot be taken..."

"Units with unstable business and frequent shutdowns...might be useful, but if there are surveillance cameras all year round, he will have to think about it... "

"You can take the highway, but it's best to avoid toll stations. If there are inspection stations, there will always be times when they are caught, but it's not that absolute. If I want to abandon this guy, where should I bury him? Hmm...it's not water, it's a pit. There must be something readily available. Digging a three-meter pit temporarily is too tiring. The body would almost have to dig itself out..."

"Oh, he has to go back repeatedly, and he might even go during non-working hours. He should be driving his own car..."

This novel is available on "pawread.com".

As Liu Jinghui drew on the map, he became more and more focused, and he searched through a pile of investigation records.

Outside his office, the criminal police officers came and went, and the number of people decreased.

In the early hours of the morning, the office was empty, but Liu Jinghui remained alert.

Especially when he felt that he was getting closer to the truth, he became more and more excited.

Although tired, he was still excited.

The next day, the criminal police officers continued to collect evidence and interrogate Tan Yong.

Liu Jinghui continued to use his brain to think and analyze possible dumping sites.

And the place that was initially considered a possible dumping site was once again measured by the criminal police officers.

Although there were no results for the time being, Liu Jinghui believed that he was getting closer and closer to the truth step by step.

The busy investigation work lasted for almost a week.

Liu Jinghui's meticulous shirt also began to look shabby.

Fatigue appeared on everyone's faces.

As the main axis, Liu Jinghui was soaked in the taste of coffee and tea, with sunken cheeks and swollen eyes, but he persisted. Being a criminal police officer, investigating and solving cases is a common occurrence to work for a week, let alone this time, where they are dealing with a cold case, and possibly a serial murder case - although China's law enforcement system does not list serial murder cases like foreign countries do, and create various character settings for serial killers, if it really happens, no matter how high the degree of attention, it is still reasonable.You can tell from the number of people in the 326 kidnapping and murder case task force that as the case progresses, the superiors are constantly adjusting and increasing their efforts.

Monday.

Once again, the full staff meeting was held, and the conference room was moved to the main conference room.

Liu Jinghui walked into the meeting room with a stack of materials in his hand, feeling proud. He saw a group of seven or eight people in the front row discussing something heatedly.

Liu Jinghui didn't rush to start the meeting. Instead, he put on a friendly smile and asked, "What are you all chatting about? Has there been progress on the case?"

"Jiang Yuan used trace evidence to find a location where the body was hidden. It's really amazing!" Captain Yu Wenshu held a report and couldn't contain his excitement.

Liu Jinghui smiled and walked over, maintaining his smile. "Let me take a look."