It is indeed important to get the fingerprints of the murderer. But finding the murder weapon is even more urgent, if you don't know the murder weapon, not only can you not clarify the process of the crime, but also there is no way to identify the murderer. If the murder weapon cannot be identified, or if the murder weapon is found, the case will not be closed.

As for the murder weapon, Yu Lifei already has his own ideas. When he felt that solving the case and identifying antiques were actually the same, his vision, or the level of case handling, suddenly improved significantly. Sometimes, just piercing a layer of window paper can greatly improve a person's level. When it comes to appraising antiques, he has a keen eye and never lets go of any details. When he now treats solving cases as an antique, it immediately opens a whole new door for him.

"Great, but the most important thing for us now is to find the murder weapon." Yu Lifei said happily. They preliminarily judged that it was a blunt weapon attack, but what kind of blunt weapon was used had to be determined by Mei Chaoqun. He spent most of his time studying the wound on the deceased's head. There are already some judgments, but Mei Chaoqun is an expert after all, and he doesn't want to be embarrassed in front of experts.

"I think it's a claw hammer." Mei Chaoqun said firmly. The so-called claw hammer has a round end, a flat and downward curved end and a V-opening opening, in order to lift the nail. The average family will have it. And it is also very convenient to carry and cheap, and it is sold in various hardware stores and daily groceries. And it is also easy to hide on the body, which is really one of the necessary tools for making money and killing people.

"Claw hammer?! May Forensics, is this the final conclusion? Yu Lifei asked in shock. He didn't express the excitement he deserved, because it was a little different from what he had guessed. When he examined the wound just now, he had already removed the claw hammer. Now Mei Chaoqun said that the murder weapon was a claw hammer, and he was naturally surprised.

"Of course." Mei Chaoqun glanced at Yu Lifei in surprise, he has been a forensic doctor for more than ten years, and no one has questioned his judgment. And Yu Lifei is only the director of a police station, and he is also the director of a halfway monk, and it is the first time to investigate a murder case. How dare you question your own judgment?

"I have a different opinion from you, I think the murder weapon should be something flat and round, most likely a wrench." Yu Lifei said slowly. When he was at the scene, the wound was not clearly visible. But now, the deceased's hair had been shaved, and he looked at the wound carefully, and although he did not dare to determine what the murder weapon was, it should not be a claw hammer. It's like identifying antiques, you have to start with the details.

"I didn't expect Director Yu to also have research on forensic identification?" Mei Chaoqun said unhappily that he was a professional forensic doctor. But Yu Lifei questioned his judgment, and he was naturally very unhappy.

"Medical examiner May, I know you're an expert in this area. But Baimi may also be sparse, if you look closely, this wound is not round, only one side is a little round fox, and the other side is irregularly shaped. Yu Lifei pointed to the wound and showed it to Mei Chaoqun.

"When you kill someone with a claw hammer, the wound is not necessarily round." Mei Chaoqun said lightly that he was dealing with dead corpses all day long. I saw a lot of wounds. What kind of murder weapon and what kind of wound it will cause, he only needs to take a look, and it is basically the same.

"So be it. None of us can convince anyone, facts speak louder than words, how about we be a real person? Yu Lifei asked. He knew that he was a layman in the eyes of others. Being a police officer is a layman, and he doesn't know much about the work of forensics. Therefore, he wants to change Mei Chaoqun's mind. It's even harder.

"You want to go to the real yàn, I have no objection." Mei Chaoqun put down this sentence and left. This is Yu Lifei challenging his authority, and he naturally can't stand it.

Yu Lifei personally went to the vegetable market to buy a piece of pork with skin, wrapped it in a round stone, and struck it vigorously with a wrench and a claw hammer. Based on the shape of the wound formed by the blow, and then compared with the wound on the deceased's body, it is easy to identify the murder weapon. When he was doing the real yàn, he invited Mei Chaoqun over.

"It seems that the wrench is more likely." Mei Chaoqun was originally very dissatisfied with Lifei, he was a professional forensic doctor, and he had been a forensic doctor for ten years. Don't say that the people at the police station, even the old criminal police of the substation, never dare to question their own judgment.

But Yu Lifei spoke with facts, and he could only be convinced. Although he felt a little uncomfortable, the forensic work was not sloppy at all, especially when it came to homicides. If he gave the conclusion that it was a claw hammer, and after catching the murderer, he confessed that it was a wrench, wouldn't it make people laugh even more?

"Forensic Doctor Mei, I think it's a wrench!" Yu Lifei said that the shape of the wound caused by the wrench is almost exactly the same as the shape of the deceased's mouth, if it can't be confirmed, it will be unreasonable.

"Well, I can conclude like that." Mei Chaoqun nodded helplessly, Yu Lifei was too serious about doing things, and he could only accept his answer.

"Forensic Doctor Mei, I'm not targeting you, if we can't determine the murder weapon, we can't determine the direction of the investigation." Yu Lifei saw that Mei Chaoqun was a little disappointed and explained.

"I understand." Mei Chaoqun nodded, although it turned out that what Yu Lifei said was right, but after all, he couldn't hold it on his face, and he didn't even look at Yu Lifei anymore.

"I'll pick you up for dinner in the evening." Yu Lifei patted Mei Chaoqun's shoulder and said with a smile. After all, he pried Mei Chaoqun's stage, if it weren't for the time to solve the case, he wouldn't be so direct.

"Forget about eating, you have a case, how can I influence your case again? Save that meal for later. Mei Chaoqun said, now that he wants to eat with Yu Lifei, it is indeed a little embarrassing.

"Okay, I'll make an appointment with you when I have time." Yu Lifei said that he really wants to go back now, and he has identified the murder weapon, which is very helpful for the next step of detection.

"Lao Feng, how is your work over there?" On the way back to the police station, Yu Lifei called Feng Yonghui.

"I've arrived at the substation, and I'm not in a good situation here, and I can only get a few blurry photos." Feng Yonghui said. In fact, the sub-bureau has no special handling method in this regard, and can only carry out simple processing.

"It's okay, you hurry up and follow me to Qiwan Village, if I'm not mistaken, this person is from Qiwan Village." Yu Lifei said that at this time, the file he looked at played a role. It's just that the photos in the file are a little different from the current deceased, and he still has to compare, if it weren't for his good brain and fast turn, I'm afraid he wouldn't have remembered it so quickly.

"Really?" Feng Yonghui said excitedly that if the identity of the deceased could be determined, it would be much easier to solve the case.

"Eight and nine are not far from ten." Yu Lifei said. He had been thinking about it for a long time, and after identifying the murder weapon, he suddenly remembered. In his memory, this person should be surnamed Sun and called Sun Du. However, there are certain differences between the photos on the file and the deceased himself.

"Alright, I'll get over there right away." Feng Yonghui said. The case is progressing and he is excited. If the police station can really take down this case, he will speak much harder in front of other colleagues in the future.

Yu Lifei notified Ji Lei again and asked him to rush to Qiwan Village immediately, they had a photo of the deceased in their hands, as long as they went to Qiwan Village and asked, they would know immediately. Before Yu Lifei arrived at Qiwan Village, he had already received a call from Ji Lei, and they had already found the deceased's room according to Yu Lifei's prompts. And that set of keys can also open the deceased's room. In the deceased's room, his ID card and wallet were found, and the deceased's name was indeed Sun Du, a farmer from Qiwan Village.

"Yu Suo, you are really powerful, how do you know that the deceased is Sun Du?" When Ji Lei saw Yu Lifei, he already looked at him with some admiration. Yu Lifei called him to inform him that the deceased might be Sun Du from Qiwan Village. At that time, he still didn't believe that Yu Lifei had been waiting for the conclusion of the forensic doctor in the substation, how could he have time to find out the identity of the deceased?

"When I was in the substation, I saw the deceased's face clearly, and I felt that it was a little similar to Sun Du from Qiwan Village." Yu Lifei said.

"So, I think you have done a solid job of basic work." Ji Lei said with admiration that he often saw Yu Lifei flipping through the household registration information, and he was still secretly laughing in his heart at the time, but he didn't expect it to play a huge role now.

"Immediately find out Sun Du's social relations." Yu Lifei said. He still feels that he has not done a solid job, if he can correspond the file with the people in reality one by one, maybe at the scene of the crime, he should be able to recognize Sun Du.

"We have found Sun Du's brother, and according to him, Sun Du is a good gambler and has borrowed money many times and has not paid it back. Yesterday afternoon, Sun Du received a call from a man named Luo Jiang, saying that he would take the initiative to lend him money. After Sun Du went out on his bicycle, he has not come back until now, and we have informed him to go to the branch office to identify the body. Ji Lei said. Yu Lifei has done a lot of work, and if he, the deputy director, can't do something, he really can't say anything.

"Lao Ji, it's hard work." Yu Lifei said that Ji Lei deserves to have participated in the work for many years, and these things are arranged in an orderly manner without his instructions at all.

"Yusuo, it's you who really suffers. The wrench is determined by you, and the identity of the deceased is also determined by you, we just did some specific work. Ji Lei said with emotion. His police age is higher than Yu Lifei, his police rank is also higher than Yu Lifei, his experience is richer than him, and his qualifications are older than him, but his work ability is not as good as Yu Lifei.

"It seems that this Luo Jiang is suspected of committing a serious crime, and he will be arrested immediately. In addition, you find someone who knows Luo Jiang and go to the sub-bureau to take a look at Wang Weixiang's surveillance. Yu Lifei said that they didn't know Luo Jiang, but people who were familiar with Luo Jiang could confirm him when they saw him.

From half past seven in the morning, Yu Lifei received a report. It has only been five and a half hours since the identity of the deceased has been confirmed and the suspect Luo Jiang has been identified. It can be said that the case has made serious progress. Yu Lifei hopes that the case can be solved today! (To be continued......)