Zhou Yanfei was a little dazed, and obediently led Tang Yunzhen away like a child, and only remembered to let go when she arrived at the elevator door.

Tang Yunzhen didn't say anything, and the two of them stayed quietly in the elevator, which was in stark contrast to the scene in the same place just now.

When the two of them returned to the office of the criminal investigation detachment, Cheng Fengqian had already told Cheng Tingshen all the previous discoveries, and everyone gathered around Xing Ye and waited for him to complete the simulation.

"Blood was found in this part of the bookcase. Cheng Fengqian compared the photos on his phone and pointed to the screen again.

"Highly compatible. Xing Ye's fingers quickly tapped on the keyboard, and in an instant, the whole process of the knife stabbing into Zhang Meina was restored. "It seems that she really committed suicide. ”

"The Intelligence Department sent a copy of the medical examination report that the deceased had taken from the hospital last week, and the diagnosis certificate stated that it was advanced liver cancer. Cheng Tingshen handed the document to Tang Yunzhen, who had just entered the door. "I went to confirm with Director Jiang that the deceased did have liver cirrhosis, but it was not as serious as liver cancer, and it was misdiagnosed by the hospital. ”

When Tang Yunzhen and Zhou Yanfei heard that Cheng Tingshen had seen Jiang Yuanhao just now, one was surprised and the other was weak-hearted, and they glanced at each other.

"My senior brother is ...... Did he say anything else?" Although Zhou Yanfei thought that since Jiang Yuanhao specially called her and Tang Yunzhen to the office to close the door to discuss whether Siren had reappeared, she should not have told Cheng Tingshen about it, but she was really weak in her heart, and she couldn't help but ask for a while.

"Didn't say anything else. Cheng Tingshen looked at Zhou Yanfei as if he was breathing a sigh of relief, and looked at her suspiciously. "I'm curious, what did you two do just now, you don't have to chat privately when you put on a group chat, what's something to hide from me?"

"Daddy Ting, your daughter has grown up, and she has a girl's heart. Tang Yunzhen whispered mysteriously. "Don't ask, she'll be embarrassed. ”

"Ah, girl's heart?" Cheng Tingshen was confused, and when he reacted, he turned on the father-like household registration check mode. "Feifei, when did you fall in love? Did you meet on this trip? How old are you? What kind of work do you do? Are you from Hong Kong City?"

"Daddy Ting, don't pay attention to him, he's talking nonsense! The two of us even told you the bank card password, how could there be anything else to hide from you?" Zhou Yanfei quickly changed the topic. "Old Tang, didn't you say that there were a few documents that I needed to sign before? Hurry up, I'll go home and sleep after signing!"

"Oh, go to my office. Where is there any document that Zhou Yanfei wants to sign, but Tang Yunzhen didn't expose her, and really invited her into his captain's office, closed the door and smiled. "What about using me as a shield?"

"Don't forget that you also have a handle in my hand!" Zhou Yanfei passed the two levels of Jiang Yuanhao and Cheng Tingshen without danger, and finally breathed a sigh of relief and was not so nervous at this time. "Just now...... Thank you. ”

Tang Yunzhen pursed his lips and smiled, didn't force her to ask what she was thanking him, and didn't immediately reply to anything else, but suddenly raised his hands, pressed Zhou Yanfei's shoulders on both sides, and nudged her to the edge of the wall.

"The way you usually flirt with my sister, don't use it on me. Zhou Yanfei didn't have any feeling of blushing and heartbeat for Tang Yunzhen's sudden 'wall knock' behavior, just because he was too close, she had a slight sense of oppression. "Stand still and speak well. ”

"Hey, hey, hey, Madam, give me a chance. Tang Yunzhen learned the common lines in the old Hong Kong TV dramas, and the more he laughed, the more treacherous he became. "You go to Ah Ting's place to help me say a few good words, and I won't tell him what you put in the refrigerator at home, otherwise...... We are now in the same boat, and we have to die together, a small life is not a pity, but your life, Your Majesty, is very valuable. ”

"You actually dare to threaten me!" Zhou Yanfei was really a general now, angrily pulled Tang Yunzhen's collar, stared at him with big eyes for a long time, thinking that if Cheng Tingshen knew that she was restoring Siren, I was afraid that she would be even more ruthless than Jiang Yuanhao training her, and for the sake of today's plan, she could only compromise.

Thinking of this, Zhou Yanfei had no choice but to let go of Tang Yunzhen, unwillingly flattened his slightly wrinkled collar, and leaned helplessly against the wall behind him, still unable to help but raise his eyes and stare at him. "How did I get on your thief ship?"

"Madame Pressur, happy cooperation. Tang Yunzhen was in a good mood when he achieved his goal, smiled lightly, and reached out to pick Zhou Yanfei's chin. "Hello, hello, everyone. ”

Zhou Yanfei snorted coldly from the depths of his throat, and while Tang Yunzhen was still triumphant, he stepped on him fiercely, and then ran away.

Early the next morning, some colleagues from a small squad of the Criminal Investigation Detachment and the front-line patrol officers went to search near the street garden.

Even if the data analysis can be narrowed down, it is still difficult to find a small ball of tin foil, and it is not impossible that it may have landed on someone's roof, stuck in the gap of the air conditioner, or fallen into the pond of the community, or flowed further down the sewer.

Luckily, after two hours of searching, police officers found it deep in the flowers in another nearby neighborhood.

Yang Qi was scolded by Zhou Yanfei yesterday, and he was very annoyed that he had carelessly missed important clues, and he always felt sorry for the victim, so he actively searched with the front line early in the morning, and after getting the tin foil, he returned to the police station non-stop, rushed into the technical room and immediately did an inspection.

Although it is difficult to restore the shape of the dagger that was wrapped in the original because it was formed, the bloodstains are Zhang Meina's, and the edge traces are also consistent with the remaining tin foil that Cheng Fengqian took back before, and the case is nearing the end with the appearance of this paper ball.

According to the medical examiner's report, Zhang Meina did not die immediately after the stabbing, and she had a few minutes of sober time to first throw away the tin foil from the window, then wipe off the little blood on the surface of the bookcase with her clothes, and then throw her clothes in a pool of blood.

Ordinary people are stabbed in the back, and the police will preconceived that it is homicide, and it happens that Zhang Meina's wallet is lost and her home is stolen, so in addition to love killing, they will also suspect robbery.

Who would have thought that what would kill her in the end would be a medical report that went wrong?

Zhang Meina disguised her suicide as homicide, probably because she didn't want to admit her weakness of fear of serious illness, but what the real reason was is unknown.

What is in a person's mind is the only thing that cannot be verified by the instrument.

Xing Ye looked at the simulated state in front of him one after another, and helplessly squeezed out a wry smile.

A trace of regret flashed across Zuo Quan's face. "From the moment she bought the knife, she was thinking about committing suicide. ”

Cheng Fengqian's reaction was the greatest, he didn't expect that the breakthrough in this case was on a roll of unused tin foil, and this result was something he hadn't thought about at all.

"It's finally closed, don't be so depressed anymore. Cheng Tingshen patted Cheng Fengqian's shoulder comfortingly. "Zhang Meina's parents have arrived in Newport, and I think they will reserve the right to sue this hospital. ”

"Everyone cheer up! I have a treat in the evening, which can be regarded as a late welcome party for Ah Feng!" Tang Yunzhen smiled and clapped his hands. "Ah Feng, your first case, the report will be handed over to you to write, no problem, right?"

"Hmm. Cheng Fengqian nodded. "I didn't expect that after so long of investigation, it would be such a result. ”

Tang Yunzhen pinched Cheng Fengqian's face and pursed his lips slightly. "When you read more cases, you will understand that sometimes the truth is more unbelievable than fiction. ”

"Don't dwell on it. Cheng Ting rubbed Cheng Fengqian's hair deeply. "I'll teach you how to write a report. ”

"Teach quickly, after the church, there is one more person in this team who can help me write a report!" Tang Yunzhen exclaimed happily.

"I'm lazy to death!" Cheng Tingshen said.

"I'm too lazy to kill you!" If Zhou Yanfei was there, she would say the same.

At this time, Zhou Yanfei was in the forensic science and technology room, in front of her desk, carefully watching the surveillance video.

She compared the map near Newport University and noticed a strange thing.

Under normal circumstances, most people who commit suicide are not planning for a long time, but are very likely to be impulsive, and many of them appear because they see specific potentially lethal items such as knives or sleeping pills, plus long-term depression or sudden changes, they will have the emotion of "I can't live, it's better to die".

But Zhang Meina did not commit suicide under such a 'natural' situation.

She didn't pass by the convenience store to buy something and saw a knife before she had the idea of wanting to die, because the place where she bought the knife, although it was near Newport University, was not on the way home from school, but on another road in the opposite direction, Jiuqu Lane.

As its name suggests, Jiuqu Lane Road is full of nine curves and eighteen bends, the inner circle is winding, and it is an old block, the monitoring equipment is not complete, and people who are not familiar with it walk in, it is really easy to lose.

Because of such a special geographical environment, this area has not been very peaceful, many gangsters hang around there all day long, although there has been no major incident, but robbery, theft is endless, three religions and nine streams, the population is huge, no matter how the blow will still pop up again, so the teachers and students in Xingang University know that they really want to go to this place, they have to go in groups, and it is very unsafe for a person, especially a girl, to go alone.

But Zhang Meina went alone.

When she went, there was still a class, and she took a leave of absence before leaving.

It was in this Jiuqu Alley that she usually didn't walk that Zhang Meina bought a knife, and not long after she came out, she bumped into Zhao Tianhu, whom she had never seen before, and Zhao Tianhu had a later burglary because he picked up her wallet.

Zhou Yanfei thought about it carefully, it is not strange that some documents in the wallet have specific addresses written on them, but it is too 'cautious' to put a pass card for his own community.

When Zhang Meina went home that day, she didn't find the property and said that she lost her card and couldn't pass the curfew, indicating that she still had a card in her hand, so why, did she have to leave a spare card in her wallet?

Nowadays, young people don't even carry their wallets much, but not only do they carry them, but they also have to take the trouble of holding two cards with the same function.

This is the same as in the entrance of the house, put a full-length mirror at the door, the probability of scaring yourself is much greater than scaring the thief, ten or twenty years the thief may not be patronized, but within a few months, he will have a nervous breakdown, this move, both redundant and more than worth the loss.

First of all, Zhang Meina is a woman who lives alone, and she can't expect roommates and roommates to open the door like in a school dormitory or shared house, so carrying a card and key with her when she goes out is something that reminds me every day and gets used to it.

Secondly, Zou Chuanjin, who is her boyfriend, also has a pass card for the street garden and a spare key to her house at home, so she can get it if she forgets to bring Zhang Meina.

No more, the property knows her and will help her pass the access control, which can completely replace the role of the pass card, and can even find a professional lock repair and lock replacement master for her, so even if she loses the card and does not bring the key, there is no possibility that she will not be able to return home.

So leaving a spare card in her wallet is definitely redundant, and it is unlikely that she will use it, but it gives the burglary a lot of opportunities.