Hu Weijun called the deceased at close to 6 p.m., about an hour between this time and the deceased's time of death.

Obviously this is impossible, and if so, how can a murderer blatantly kill the dead?

What happened to the deceased in the store during this hour?

I continued, "Can you describe in detail what happened to the scene of the crime?" ”

Hu Weijun said: "I called my wife again at half past seven in the evening, but although the phone was dialed, no one answered. I've called several times and it's been like this. I thought she didn't answer because there were too many customers in the store and her phone was on silent. After that, I packed some meals at home and brought my son to the store to bring her food. But I saw that the door was closed from a long distance, and I thought my wife had come home, but we missed it. So I called her again, but no one answered. ”

Hu Weijun paused, took a puff of cigarette, and said: "I didn't think something was right, so I tried to pull the roller shutter door, but I didn't expect the roller shutter door to be unlocked, and the lights inside were not turned off." I called her name a few times, but no one answered, so I walked into the store and found her lying behind the cash register, covered in blood from her neck and stomach. I was frightened, but my son was by my side, and I was worried that he would be frightened, so I hurriedly walked out of the store with my son. After that, I called 120 and 110, but when the doctor came, he told me that she had been dead for a long time. ”

After Hu Weijun finished speaking, he wiped his tears again.

After Hu Weijun left, Lao Lu asked me: "Do you really think Hu Weijun is suspected of committing a crime?" ”

I said: "In Hu Weijun's confession, there are still many people who can prove that he was eating at home during the time of the crime. It's good to investigate. ”

Lao Lu nodded and said, "If Hu Weijun's criminal suspicion is ruled out, what is your next direction to investigate?" ”

I said, "I have already said before that the murderer is most likely an acquaintance of the deceased. Then we have to start with the deceased's social network to see if we can find a man who used to wear a rosary bracelet. There is also a very important evidence at the scene, that is, the blood fingerprint, the blood fingerprint, must have been left by the murderer. ”

After investigation, it was determined that Hu Weijun was indeed at home at the time of the crime, so his suspicion was immediately ruled out.

The autopsy report of the deceased came out. The deceased's name is Kang Yajuan, 29 years old, a native of Wanzhou. Her fatal injuries were severed in an artery in her neck, causing blood to enter her trachea and cause suffocation. The deadly murder weapon was a single-edged dagger, and it is very likely that it was a fruit knife.

The police searched and compared the blood fingerprints in the national fingerprint database, but the results were not satisfactory, and no matching fingerprint information was found.

Now there are only fourteen rosaries left at the scene, and as long as the owner of this rosary is found, the real murderer may be found.

The rosaries are sent to a forensic center for DNA analysis. Because the rosary is worn on the wrist for a long time, it is very likely that the DNA of the wearer of the rosary can be extracted from the gaps in the engraving and engraving of the rosary.

While the police were doing DNA extraction, I began to investigate the case.

I first investigated the call details of the deceased Kang Yajuan. Because I'm thinking about a question, Kang Yajuan's husband Hu Weijun has been working in other places for a long time, so will Kang Yajuan, who is alone at home, have close relationships with other men? If so, will there be regular calls between them?

However, through investigation, I found that the number that Kang Yajuan contacted the most and had the longest call time was a foreign number. In the end, it turned out that this foreign number was Hu Weijun's phone number.

From this point of view, although the husband and wife work in two places separately, the relationship between the husband and wife is still very good.

The suspicious phone number was not found in the call list. So I investigated Kang Yajuan's QQ and WeChat, and again, I didn't find any abnormalities. Most of the content in her QQ talk and WeChat Moments is about the display of products sold in her store. And in the chat history, I didn't find any inappropriate information.

It shows that Kang Yajuan is a woman who does her duty, and her death will not be caused by emotional disputes with others.

I found a video in Kang Yajuan's mobile phone, the video was 4 minutes and 27 seconds long, the recording was very unstable, and it was recorded running back and forth in Kang Yajuan's jewelry store. From the perspective of the recording and the occasional laughter of a young boy, I speculate that this video was recorded by Kang Yajuan's son.

In this video, I found a slightly chubby man, he flashed in the video, and there seemed to be something black on his wrist, but because the child was shaking the phone very strongly, so I couldn't see that the black thing was a watch? Bracers? Or a rosary?

The back of the man can be seen in the video, wearing a blue long-sleeved shirt and black trousers. However, he has a distinctive feature, he speaks Mandarin, and he is obviously talking to Kang Yajuan, and Kang Yajuan is also talking to him in Mandarin.

The conversation was not very clear, but I could hear the name of an elementary school.

Kang Yajuan and Hu Weijun's son is six years old this year and will start primary school in the second half of the year. So I guess that Kang Yajuan is discussing with this man about her son's elementary school.

Judging from the time of shooting, it was taken at half past six in the afternoon two days before the crime, which is very close to the time when Kang Yajuan was killed on the day of the crime. Perhaps this man often comes to the jewelry store during this time period, because this time period may be the time when this man has just left work. So could this man have something to do with this case?

I communicated this speculation to Lao Lu. Lao Lu lit a cigarette and said, "Although your speculation is a bit too outrageous, I can't rule out this possibility. ”

I said, "I can be sure what the man is wearing on his arm, but it's hard to tell what he's wearing." If it was a rosary, then this case might be solved like this. ”

Lao Lu nodded and said, "I hope so." But based on this video alone, only the back image of this man, what is the direction of our investigation? ”

"In the video, the man and the victim are talking about an elementary school, and this person has the feeling of being a teacher in terms of his posture and tone of voice, and he may be an elementary school teacher, or even a teacher at the elementary school they mentioned," I said. ”

Lao Lu raised his eyebrows and said loudly: "Then what are you waiting for, go, go to that school immediately." ”