Through the open window, you can see a corner of the community, and the street in the distance. Cars come and go on the streets, and strangers come and go. People build cities, but they get lost in them.

"Leizi, what did you find?" Jiang Ruyi was a little breathless.

Xia Lei shook his head, "No, but I always feel that something is wrong." ”

"What's wrong?"

"It's so clean that there's not even any excess dust in the cracks of the floor, as if it has been vacuumed," said Shalei. ”

"Didn't the maid of Professor Zhang's house say that she didn't clean it?"

Xia Lei said: "Professor Zhang's maid didn't clean it, but the murderer couldn't clean it?" He was worried about leaving any traces, and after killing Professor Zhang, he cleaned all the places where he moved, and it was normal for your police technical team to not find the slightest trace left by him." ”

"It's really possible, but ......" Jiang Ruyi looked at Xia Lei with strange eyes, "The gap in the floor is so small, can you see how much dust is inside?"

Shaley avoided her question, and he said, "Where is the vacuum cleaner?" Take me to see it." ”

"In the utility room, I'll take you there. Jiang Ruyi didn't ask Xia Lei how he could see the situation inside the cracks in the board, she took Xia Lei to a storage room in the villa.

The storage room was filled with cleaning utensils, mops, vacuum cleaners, buckets, etc., as well as a few other miscellaneous items, but they were all neatly organized.

"Has your police technical team inspected this place?" asked Xia Lei.

Jiang Ruyi thought for a moment, "A colleague came to see it, but he only looked at it briefly and didn't check it carefully." ”

Xia Lei walked to the mop and his left eye jumped slightly. The wooden handle of the mop suddenly enlarged in his left eye, and everything on the surface of the wood was clearly visible to him. He didn't use a magnifying glass, but he could see it more clearly than that.

The handle of the mop is very clean, it does not leave any fingerprints, not even a single water stain.

Xia Lei's heart was even more certain of his guess, that is, the murderer must have cleaned the scene, and he even wiped down the cleaning utensils that cleaned the scene one by one after cleaning. There is only one explanation, because if it was the maid of Professor Zhang's house who cleaned up, then what she wanted to do must be resting, not wiping the handle of the mop.

"Leizi, you are so strange today, just now you were lying on the ground looking at the cracks in the ground, and now you are looking at the mop again, are you helping me solve the case?" Jiang Ruyi's curiosity became even heavier.

"Don't speak. Xia Lei walked over to the vacuum cleaner.

Jiang Ruyi curled his lips dissatisfiedly, "You look like a detective, but you've never done this, right? If you don't find anything, let's go outside, if you're lucky, you can still meet those two suspects." Hey, I'm talking to you, do you hear me?"

She definitely wouldn't shut up, but Xia Lei closed her mouth, and he had already finished checking the handle of the vacuum cleaner while Jiang Ruyi was nagging. The result is the same, the handle of the vacuum cleaner has also been wiped clean as if it had just left the factory. His eyes suddenly fell into the dust bin of the vacuum cleaner, and the black plastic of the dust bin suddenly disappeared from his sight, and the contents of it also entered his sight.

The dust bin was not cleaned and contained some debris, dust and carpet fibers, etc. A small piece of fingernail and a strand of hair embedded in the crack of the nail suddenly came into Xia Lei's sight, and not only that, but he also saw a trace of dark red blood left on the nail!

Xia Lei's heart was suddenly excited, and he also imagined the process of the murder in his heart.

In the middle of the night, Professor Zhang heard a strange noise, and he got up to look. The source of the sound was in the direction of the window, and he thought it was not closed properly, and was about to close it. The killer suddenly jumped in from the window, pushed him to the ground, and then choked him by the neck. He struggled desperately, but was no match for the able-bodied murderer. His breathing became more and more difficult, and his hands clutched at the murderer's clothes and face desperately. He scratched the killer's skin, his nails were broken, leaving bloodstains, and a hair that happened to be torn off......

The killer cleaned the scene, and finally wiped down the handles of the mop and vacuum cleaner. He may have opened the dust bin of the vacuum cleaner and looked at it, but he didn't find the nails hidden in the dust and carpet fibers. Or maybe it's because of time that he didn't have time to deal with the dust can. However, it doesn't matter what the reason is, the important thing is that he was cunning and left very important evidence in the end.

The corners of Xia Lei's mouth couldn't help but show a smile, although he is not a detective, and he has no experience as a detective, but with the extraordinary ability of his left eye, he is a natural detective!

"Hey, what are you laughing at?" Jiang Ruyi couldn't hold her breath again, she came to Xia Lei's side, and followed Xia Lei's gaze to see the black dust storage cylinder, but all she saw was a smooth dust storage cylinder, and she couldn't see what was in it at all, let alone the small piece of nail fragments.

"Uh...... Nothing, just one funnier thing that came to mind. Xia Lei said.

"You guy, I'm almost sad to death, are you still thinking about funny things?" Jiang Ruyi slapped Xia Lei angrily, "You are really a heartless stinky man." ”

"Don't worry, I said that if I help you solve the case, I will definitely help you solve the case. Xia Lei said as he squatted down and removed the dust bin of the vacuum cleaner, and then walked out.

"What are you doing?" Jiang Ruyi chased Xia Lei out of the storage room.

When he returned to the living room, he found a newspaper and opened the dust bin to empty the garbage inside. He then carefully scraped away the dust and carpet fibers, revealing the small fragment of his nail hidden inside.

"Are you talking?" Jiang Ruyi didn't find the small piece of nails, and she couldn't understand what Xia Lei was doing.

Xia Lei carefully picked up the small piece of nail with a tissue, and then handed it to Jiang Ruyi's eyes, and said with a smile: "See? This is the evidence left by the murderer." ”

"This ......" Jiang Ruyi looked at the nails in the tissue dumbfounded.

Xia Lei continued: "The blood stain on this nail should be the murderer's, and there is also a murderer's hair, with two things you can find the murderer's DNA, and then find the murderer's true identity from your police database." With such a piece of evidence, you can type a detailed report to it. You have all the human and physical evidence in your hands, and you have solved this case. ”

Jiang Ruyi came back to her senses at this time, and under the excitement, she suddenly hugged Xia Lei and kissed him on the cheek, "I know, I know...... Haha, Leizi, you are really my lucky star!"

The warm and soft squeezing, as well as the fragrant kiss like a dragonfly dotting water, Xia Lei seemed to be frozen, and the whole person was not good.

As if sensing that something was wrong with Xia Lei's body, Jiang Ruyi suddenly let go of Xia Lei again, his face was dizzy, and he said embarrassedly: "I'm sorry, I'm too excited." She then diverted Xia Lei's attention, "Tell me, how did you come up with the idea to check the dust bin of the vacuum cleaner, and how did you find such important evidence?"

"I've always been smarter than you, okay?" said Xia Lei.

"I admit this, your grades have always been at the top when you were studying, but it's a pity that ......" Jiang Ruyi knew that Xia Lei tore up the admission letter of Kyoto University in order to take care of Xia Xue.

Xia Lei said: "Don't mention the past, do what you should do." ”

Jiang Ruyi took out his mobile phone, "I'll let someone from the technical team come over, with such important evidence, it will be easy to find out the true identity of the suspect." ”

Xia Lei pressed her hand, "You are stupid, if you call back, Huang Changhai will make a hindrance again, and he can make the technical team slow down by making a bad mistake." A week later, you're dismissed, and he's using the evidence we found to solve the case. ”

Jiang Ruyi frowned, "Then what should I do?"

Xia Lei said: "Call the leader who promoted you and ask him to send someone over." You can also complain to him and call that Huang Changhai's little report. That Huang Changhai is against you everywhere, don't you want to take revenge on him? This is just an opportunity. ”

"Giggles, Leizi, I really don't see that you are such a bad person. I'll call Director Xu. Jiang Ruyi smiled and dialed a new number.

"I'll go to the study. Charlei left the living room and walked to the study next to the living room.

In the study, there is an ancient desk made of golden silk nanmu, and two large bookcases, which are also made of golden silk nanmu. This kind of wood looks golden, and the light and shadow flow, and at a glance you know that it is a valuable collector's piece of furniture.

"I'm afraid this desk and bookcase are hundreds of thousands, right? This professor is really rich. Xia Lei thought to himself, and then walked to the bookshelf.

There are many books on the bookcase, including professional books on archaeology, famous books, and some miscellaneous notes.

"Professor Zhang died because of a key, how valuable does this key have to be to be worthy of the murder of those two suspects? The information Ruyi showed me said that the key may have opened some kind of library door, and the lines on the key may also be part of the map...... With such a complicated matter, Professor Zhang can't just leave that little bit of research information, right?" Xia Lei's mind quickly shifted to the case.

In fact, if the evidence left by the murderer is found, he can finish the matter on his side. However, he took a great interest in the cast-iron key. He couldn't help but think back to the moment when he welded the key, and the faces of the man in the suit and the sexy girl. Standing in Professor Zhang's study, he had a very strange feeling that Professor Zhang might still be hiding something, and that thing had not been found by the police and his killers.

Finding something like this is not at all difficult for Xia Lei. His left eye twitched slightly, and everything in the entire study suddenly became "transparent......

ps: Friends are very good, and there were new book friends to reward yesterday, they are 8888354 book friends, book friends 9370860, thank you. Today is still three new chapters, 12 noon and 6 pm. By the way, ask for votes and give me all your tickets!