Chapter 585： check in person

On the day of the 100th blind date, arrest the target of the blind date in Chapter 585 of the main text volume and personally inspect Zhang Chaoyang. Continue to investigate which pawnshops or loan companies Chen Ziqiang has borrowed money from. Finding out these details may play a positive role in solving the case. .

Although this possibility is unlikely, at present, with no clues about Chen Ziqiang's disappearance, no details can be left behind.

After all, if Chen Ziqiang didn't pay the money, he might be imprisoned. Chen Ziqiang's parents, Zhang Chaoyang, also did some investigations, especially whether there was any change in the bank account information of the two of them.

If the other party really imprisoned Chen Ziqiang for paying back the money, he would definitely ask his parents for money.

Li Yun is investigating the group fight caused by Tian Feifei last year.

Chen Yan didn't rest either. In the laboratory building where Chen Ziqiang disappeared, Chen Yan was carefully inspecting every room.

Apart from a 100-meter-long road, there is only this laboratory building within the range where Chen Ziqiang disappeared.

There was nothing special about the road. As far as the head could be seen, a careful search was carried out under several manhole covers, but nothing was found. Therefore, there is a high probability that Chen Ziqiang's disappearance is still in this laboratory building.

In fact, when Chen Yan entered the laboratory building for the first time, he activated the olfactory gene lock, but with little effect.

When Chen Yan arrived at the scene, Chen Ziqiang had been missing for three days. The windows in the laboratory building were always open, the side door and the main entrance were also open, and the air flow was very good. This meant that even if Chen Ziqiang appeared in this building, he would leave traces. Also hard to spot.

What's more, the laboratory building is not fixedly allocated to students of any major, and the daily turnover of personnel is very high. Hundreds of thousands of students come in and out every day, and it is impossible to distinguish the traces left by Chen Ziqiang.

As for other smells, Chen Yan actually discovered them. For example, in the toilet behind the hospital, Chen Yan noticed the smell of blood the first time he entered.

If there is such a smell in a general place, it must be a problem, but this is the experimental building of the Vocational and Technical College. The third floor is the chef's professional laboratory, or a large kitchen, where students process raw meat almost every day. , the smell of blood is normal though.

In the lecture hall on the first floor, Chen Yan walked through the windows one by one, looking at each window very carefully. The inspection by Li Yun's subordinates is no problem. Limit locks are installed in the middle of these windows, which limit the opening limit of the windows. They can be closed, but they cannot be fully opened unless the limit locks are broken.

Chen Yan also carefully surveyed some hidden corners, such as the space inside the podium, but nothing unusual.

On the day of the incident, no one was in class in the pastry laboratory on the second floor, but there were students in the kitchen on the third floor. If Chen Ziqiang was killed, it is unlikely that the murderer committed the crime on the third floor, so there is a high probability that it was on the first floor Or the second floor.

Leaving the lecture theater on the first floor, Chen Yan focused on checking the bathroom.

There is no bloodstain, which is the most important evidence for judging whether there is a murder here.

Unless the murderer uses some special methods, the words will definitely leave evidence.

Regarding the elimination of blood stains, there are actually certain methods.

Of course, washing with water is not acceptable. In fact, the most important blood test contains iron ions. The content of iron ions is an important basis for judging the type of blood.

As long as the iron ions in the blood can be neutralized, the blood can be cleaned up.

Ordinary water washing is definitely not enough. Iron ions are insoluble in water. Even if the surface looks clean, it can still be found after some technical means.

But if you wipe it with liquid like soapy water, as long as it is done fine enough, it will be difficult to detect the remaining traces through current technical means.

Chen Yan is now carefully observing in the barriers of each bathroom.

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There are no traces, and the toilets in the laboratory building are cleaned every day, and the frequency of cleaning will not be less than twice.

In this case, even if the murderer left some traces at that time, it would be difficult to leave traces in the past few days.

The rest were the traces on the wall and the bathroom partition, Chen Yan activated the visual gene lock to scan them one by one.

If the murderer really used some special means to clean up the bloodstains, although no bloodstains would be left, there would still be other bloodstains left after all.

Traces, such as cleanliness.

In the bathroom of the university teaching building, the floor must be cleaned frequently, but what about the wall and the toilet partition?

Perhaps since the day the building was built, no one has ever cleaned it.

Therefore, if Chen Ziqiang was really killed and the murderer had dealt with the crime scene, then the cleanliness of the partitions and walls must be different from other bathrooms.

The vision that unlocks the vision gene lock with Chen Yan will definitely be discovered.

The bathrooms in the laboratory building are all on the inside side of the building, that is, the side near the side door that was not opened.

The men's and women's toilets are next to each other, and Chen Yan's inspection focused on the toilets on the first and second floors.

On the first floor, in the men's bathroom, Chen Yan was carefully inspecting a toilet partition, comparing the cleanliness of the toilet partition he had just seen.

No difference, same dust sticking, no trace of cleaning.

Chen Yan, who was wearing gloves, tiptoed lightly and touched the upper layer of the partition with his fingers. There were also traces of dust wiping, but there were no other residues.

There are five partitions in each bathroom, and once Chen Yan checked them in place, there were no problems.

Chen Yan also conducted a careful inspection of the pastry laboratory on the second floor, which is obviously more complicated than the lecture theater on the first floor.

There are ovens, steamers, large chopping boards, etc., and there are many places to hide things.

With the help of the school staff, UU Reading Chen Yan did not miss any space: "This police officer, each of our laboratories is monitored, and all the materials here are also specially assigned Counting, it is impossible for Chen Ziqiang to hide here for so many days.

"Besides, Chen Ziqiang is a student majoring in beauty and hairdressing, so he can't get in here either."

Chen Yan nodded, and nothing unusual was found in the pastry laboratory or the pastry room.

"Teacher, can I trouble you to arrange for someone to copy all the surveillance videos in this building on the day Chen Ziqiang disappeared?"

"That's okay, I'll arrange for the security department to copy it for you, when will you be there?"

"Today, the surveillance video from Chen Ziqiang's disappearance to the present."

"OK."

Afterwards, Chen Yanyou checked the bathroom on the second floor, which was the same as the first floor, and there was nothing suspicious about it.

Chen Yan also checked the large kitchen on the third floor himself. The frozen meat in the refrigerator was beef, pork and some chicken racks, and there was no dead body as imagined.

Therefore, the whole building is clean.

How did this Chen Ziqiang disappear?

On the day of the 100th blind date, arrest the blind date https://