In the complex flow of people in Jiuqu Lane, there is a very high probability that a wallet with documents, addresses and cash will be picked up by people with bad intentions, there is no Zhao Tianhu, there may also be Wang Tianhu, Li Tianhu, for people like them, there is a pass card and a little disguise can enter the community without being noticed by the property, and as long as you successfully enter, opening the door and picking the lock is a trivial matter.

The wallet is like a guide, the pass card is like a map, and the game is quite easy, as if it had been designed a long time ago.

Also, the receipt for her knife is gone.

The receipt was not in the convenience store that sold the knife, nor in the wallet that Zhao Tianhu had picked up, nor in her apartment in the middle of the street.

She may have lost it casually, but because of the lack of monitoring in Jiuqu Lane, it is impossible to find it again.

Why did Zhang Meina take a special detour to buy a knife, or did she take a detour to meet someone?

Is it all a coincidence, or is it intentional?

The more Zhou Yanfei thought about it, the more he had a headache, and he rubbed his temples for a long time before picking up the information and flipping through it, and after reading it for a while, a flash of inspiration suddenly flashed in his mind.

The murderer was a medical report that went wrong, and the rest of the criminal investigation detachment, including Cheng Tingshen, thought so.

Only Tang Yunzhen knows that behind Zhang Meina, there is a bigger mystery that has not been solved.

Can a physical examination report really allow a high-achieving biology student with university degree knowledge and basic medical knowledge to start planning and end his life hastily without any re-examination?

Regardless of whether Zhang Meina knew the regulations for suicide after the expiration of two years of insurance, she disguised suicide as a reason for homicide, which was not sufficient.

She could have found a more authoritative hospital for another examination, or she could have made an appointment with a lawyer or insurance officer to understand her insurance conditions.

Even if she is really terminally ill of cancer and has no medicine, there is no reason to end her life so urgently.

The evidence and details in the case have been clear, she did commit suicide, but what is the reason?

That urgent reason must override cancer and insurance.

Could a reason that can be above life and property would be Siren?

Tang Yunzhen's mind was very chaotic, and he couldn't sort out the thousands of things for a while.

He decided to go and meet someone alone, a man who might be able to help him out.

Zou Chuanjin didn't expect Tang Yunzhen to visit suddenly, and when he opened the door and saw people, his expression was a little stunned. "Don ...... Officer Tang?"

"Hello. Tang Yunzhen didn't seem to feel his abruptness at all, walked in with a big grin, and sat down directly on the sofa. "Are you busy? If not, I'd like to ask you a few questions. ”

"I didn't ...... It's okay for the time being. Although Zou Chuanjin was a little inexplicable, he still closed the door casually, and then poured a glass of water for Tang Yunzhen. "Officer Tang is looking for me, it should be for Mina's business, right?"

Zou Chuanjin has helped Zhang Meina's parents these days and dealt with her afterlife, but she is much calmer than the first few days when she heard the bad news.

"Yes, it's Miss Zhang's business. Tang Yunzhen didn't plan to chat, and got straight to the point. "It's just that I asked in my private capacity, and I won't enter the record, so Mr. Zou doesn't have to be so restrained, relax a little. ”

Tang Yunzhen has always been a master of chatting, and a few words diluted the originally serious atmosphere.

"Just ask, I know anything. Although Zou Chuanjin's demeanor was still mostly depressed, his eyes were not as gloomy as when he first learned of his death.

"You said that you went to look for Miss Zhang that day, and you had a quarrel as soon as you entered the door, and the atmosphere was not very good, so why did you go into the bedroom?" Tang Yunzhen's tone was very flat, and there was no sense of questioning. "Are you going to get something?"

"I wasn't trying to get anything, I just wanted to smash her computer. As soon as Zou Chuanjin finished speaking, Tang Yunzhen was stunned for a moment, and Zou Chuanjin hurriedly explained. "Don't get me wrong, officer, I don't throw things around because I lose my temper, I just ...... I just don't want her to do those experiments anymore, Mina has been changing since she was exposed to those things. ”

"Changed?" Tang Yunzhen seemed to have caught some useful clues, and his eyes widened for a moment. "Can you be more specific?"

"She's obsessed, her eyes are shining, it's like ...... It's like taking some kind of stimulant. Zou Chuanjin frowned slightly, as if he was trying to recall, and perhaps because he was more or less dissatisfied with this matter. "She's protecting that information to the extent that a mother is overprotective of her child, or rather, it's a kind of doting, kind of ...... It's a bit excessive. ”

"Is this why your relationship has started to become bad because of these things?" Tang Yunzhen saw Zou Chuanjin nodding, he was silent for a few seconds before asking again. "What do you think...... Is it possible that she is trying drugs because of her own experiments?"

"Test the medicine?" Zou Chuanjin didn't seem to have thought about this aspect at all, his expression was very surprised, and he didn't know what to say after opening his mouth for a while. "This ...... I, I'm not a student biographer, I don't understand this, but according to the school's rules, immature experiments can't be used on human bodies, Mina...... She shouldn't be joking with her body. ”

Tang Yunzhen pursed his lips slightly, didn't say anything more, just raised his glass and took a sip of water.

Zou Chuanjin is Zhang Meina's boyfriend, so she naturally knows her better than him, a stranger.

But Zou Chuanjin will not know Siren better than Tang Yunzhen.

If it was really Siren, the legendary Siren who seemed to be like an elixir that could bring the dead back to life, would Zhang Meina try it?

They don't know, they don't know.

Siren may not have really reappeared, but forces like it have never really disappeared.

Tang Yunzhen couldn't say whether he had gotten any effective clues when he went to Zou Chuanjin's house, but he felt a little irritable, and drove all the way back to the police station by the upper limit of the law-abiding speed.

Restless, still trying to find a place to smoke, Tang Yunzhen staggered to find a vacant seat near the outer wall of the police station, took out a cigarette and was about to light, and saw two people walking out of the building of the criminal investigation detachment from a distance, which was the one he was most familiar with, Zhou Yanfei and Cheng Tingshen.

Tang Yunzhen didn't know what was wrong, and suddenly dodged into the corner like a thief.

Zhou Yanfei and Cheng Tingshen didn't notice the figure in the distance, she was still thinking about the case. "Ting, where is Zhang Meina's car?"

"She was sent for repair a week ago, and she should still be in the garage. Because the suicide case happened at Zhang Meina's house and had nothing to do with her car, the police never sent her car out to investigate, Zhou Yanfei suddenly asked, Cheng Tingshen was still a little strange. "What's wrong?"

Zhou Yanfei smiled, but did not directly say the reason. "I need a search warrant. ”

Cheng Tingshen glanced at her, didn't ask more, and only nodded slightly. "Okay, I'll help you go...... Go to him and get it. ”

"Still hello. Zhou Yanfei smiled again. "If I tell Old Tang that I want a search warrant, he will break the casserole and ask the end, I have to know what I'm investigating, and I want to take him to play before he will give it to me!"

"Your boast is so loud that I can't ask even if I want to. Cheng Tingshen was helpless, so he could only laugh. "Actually, if you want a search warrant, you don't need to go through me or Old Don...... Look for him directly, he will give it. ”

"He is an outsider, and he has to pay back the favors he gave, and I can't afford to pay them back. Zhou Yanfei snorted coldly, but his expression quickly softened again, and he pulled Cheng Tingshen's arm and shook it. "You are my Ting father, you are your own person, you owe you, you don't have to worry about debts!"

"Sure enough, the children are here to collect debts. Cheng Tingshen smiled helplessly, and then patted Zhou Yanfei's hand comfortingly. "In my name, it is not your personal debt. ”

"Thank you, Daddy!" As soon as Zhou Yanfei finished speaking, Cheng Tingshen's phone rang, and he signaled that she had something to do, but she didn't delay, and watched him enter the building again.

Zhou Yanfei was also about to go back to the technical room, but when he turned around, he saw Tang Yunzhen.

In fact, they are quite far away, and they can't see clearly at all, but with Zhou Yanfei's understanding of Tang Yunzhen, the kind of standing posture that thinks she is very handsome and cool, but in her opinion, she is swaggering and coquettish, and he is probably the only one in the entire Southern District Bureau.

However, he was tall enough, with a thin waist and long legs, and it was not ugly to stand against the wall so ruffianly, and even attracted a few policewomen passing by to smile and greet him. "Tang Team~"

"Hello~" Tang Yunzhen smiled without hesitation, but his body never moved, waiting for Zhou Yanfei to come over, and then pretended to be aggrieved and said. "You whisper to Ah Ting, I'm jealous, coax me. ”

"You're not jealous, you're itchy and underwhelmed!" If this was at home, Zhou Yanfei would have done it directly, and in the police station or in full view, she had to pay a little attention to her image, definitely not to save face for Tang Yunzhen. "Your team is busy, where are you running to be lazy?"

"Isn't this to hold a welcome meeting for Ah Feng tonight and go out to Zhang Luo?" Tang Yunzhen saw Zhou Yanfei before he had time to light a cigarette just now, so he didn't have a too obvious smell of smoke on his body, so he was not afraid to get close to her, and stretched out his hand to hold the other party, and pulled him to the technical room. "My dear, you smell no smoke on my body, I really didn't smoke secretly, can the fine be slowed down? ”

"You Yueguang clan Gakanu, you also book a box in a five-star hotel every time, and you have to die to save face. Although Zhou Yanfei said this, he didn't expect Tang Yunzhen to change at all. "Give me tonight's bill, it's for Ah Feng's sake. ”

"My dear, why are you so understanding and considerate!" Tang Yunzhen praised Zhou Yanfei loudly and exaggeratedly, and took the other party and kissed her the top of her hair. "I want to marry you 300 times a year!"

"Hehe, then you line up. Zhou Yanfei didn't even bother to give him a fake smile, and raised his eyes to stare at him. "I guess it's your turn in the next life. ”

"Oh hey, you even promised it to others in the next life, you know that you have me in your heart!" Tang Yunzhen acted like a shy girl, and almost didn't make Zhou Yanfei sick to his stomach.

Seeing that there was a forensic science and technology room in front of him, Zhou Yanfei hurriedly rushed to his own territory, and kicked Tang Yunzhen before rushing. "Don't be embarrassed outside, get out of here!"

"Okay, people won't embarrass you. Tang Yunzhen finished squirming, he also felt funny, and he ha in place for a while before shouting at Zhou Yanfei, who was about to step into the technical room. "See you after work. ”

Zhou Yanfei didn't bother to turn around, so he waved his hand to signal that she knew, and then entered the technical room and closed the door with his hand.

She didn't know that he had been watching her from behind for a long time before he withdrew his gaze and turned away.

People who are too familiar will ignore the details because of habit, and the conversation is like a post-it note that you pick up casually.

On the post-it note, he wouldn't write goodbye to her seriously, and she wouldn't pay attention, he would let her go first every time.