Facing the calm Li Ze, Zheng Ziying started to panic.
However, she hid it very well and did not reveal it.
The other party was right.
To be able to sit here and chat with her confidently, he was not worried that she would deny it.
With such confidence, it was absolutely impossible for him to say that he had not found anything.
After realizing this, Zheng Ziying began to feel a little nervous, and her hands began to move more.
This was the outward manifestation of fear and worry.
It meant that Zheng Ziying was no longer calm.
Li Ze stared at her for a while and said,""Do you want to say it, or should I?"
Zheng Ziying lowered her head slightly to hide the uneasiness on her face and said slowly,""Captain Li, I still say the same thing. I didn't kill him.”
She wasn't a fool. Of course, she wouldn't be fooled by Li Ze's words.
What if he was trying to trick her?
This kind of conversational technique was common on television.
Seeing that Zheng Ziying still refused to shed tears until she saw the coffin, Li Ze shrugged and said,"Alright, I'll tell you."
"We've checked all the reagent stores in the East District. There's no recent purchase record of the reagent, which is the helium.”
"Of course, you won't really buy it with your real name.”
"Then, how do I get my hands on it?”
"Steal? It's a little risky."
"So, you made it yourself, right?”
Li Ze spoke slowly.
"You're a chemistry teacher yourself, so you're more familiar with the principles of chemistry than ordinary people.”
"As long as you casually look up some information and borrow the school's laboratory, you can create enough dosage for your use.”
Hearing this, Zheng Ziying said coldly,""Nonsense!"
"What evidence do you have to prove that I have made helium? Show me!"
She stared at Li Ze with a displeased expression.
At this moment, Wu Kang took out a book from the evidence bag and placed it on the podium.
Zheng Ziying lowered her head.
When she saw the book, her expression changed. She looked at Li Ze and said angrily, You…you searched my house?"
"What right do you have to enter a private residence?”
Do you have a search warrant?"
As soon as he finished speaking, Wu Kang took out another piece of paper.
This was a search order signed and stamped by the municipal bureau.
Zheng Ziying's tone was stifled. She opened her mouth but couldn't say a word. In the end, she could only use a cold snort to express her dissatisfaction.
"One of the pages in this book has a detailed description of how to make helium.”
"And there are bookmarks on this page, as well as a large number of your fingerprints and traces of flipping through it. This means that you have studied a lot, right?”
"So what?" Zheng Ziying gritted her teeth and said. As a chemistry teacher, what's wrong with me reading related books?”
"Can't I be interested in the formation? Is it illegal?"
She wouldn't be frightened by Li Ze.
A mere book and the traces of reading could not prove that she had really produced helium.
It would be even more ridiculous to prove that she had killed someone.
" Don't worry," Li Ze said with a smile." Let's continue."”
"You didn't buy any steroids, but…you did buy a syringe.”
Hearing this, Zheng Ziying's heart tightened.
" The pharmacy is located in a remote area, far from the city center," Li Ze said." Moreover, the eastern part of the city is so big. It will take a long time for us to finish checking."”
"Unfortunately, you made a mistake, a very big mistake.”
"When you bought the syringe, you didn't use cash.”
"After checking your consumption records, we found the pharmacy where you bought the syringe.”
"After testing, the four syringe models are identical to the needle holes on Li Jiayun and the others.”
"Where is it?"
"Why did you buy a syringe?"
As Li Ze finished speaking, Wu Kang took out another item.
This was Zheng Ziying's consumption record and the sales record of the pharmacy.
"I…"
"Personal needs."
Zheng Ziying knew that she couldn't deny this, so she could only give a reasonable reason.
"Personal needs?" Li Ze asked. What did you do after you used it?"
"Throwing…throwing it away."
"Where did you throw it?"
Zheng Ziying replied,"I…can be in the trash."”
"Which trash can?" Li Ze asked.”
"I can't remember!" Zheng Ziying frowned.”
Staring at Zheng Ziying for a while, Li Ze smiled and said,""Alright, let's put this matter aside for now."
Hearing this, Zheng Ziying heaved a sigh of relief.
However, Li Ze's next words made her heart beat faster.
"Didn't you want evidence?"
"Then I'll show you what a complete chain of evidence is.”
"You did the preparation work before the crime at home, right?”
Zheng Ziying remained silent.
Perhaps she was worried that she would say something wrong or lose her composure, she was no longer prepared to answer unnecessary questions.
Li Ze didn't care and continued,""Four cases happened on the same day. You made ample preparations in advance.”
"Including the time, place, rope, and syringe that was used to fill the syringe with pheromone.”
"Especially the time and location. In order to kill the four of them in a short period of time, you must have figured out their movements.”
"I'm talking about the syringe."
"When a nurse uses a syringe to give a patient an injection, why would she habitually squeeze out a little medicine first? Two reasons."
"First, exhaust all the air to prevent air from entering during the injection and causing additional harm to the patient.”
"Second, make sure the syringe is connected and do a final check.”
" And you are the same."
"Of course, what you care about is not the air, but the connection.”
"The cautious you were worried that there would be a problem with the syringe when you committed the crime, so you did the same thing as the nurse during the preparation process.”
"It was this matter that exposed all your schemes.”
"Didn't you say that you didn't make any pheromones?”
"Take a look at the trace report."
After saying that, Li Ze gave Wu Kang a look.
……
This book is provided by FunNovel Novel Book | Fan Fiction Novel [Beautiful Free Novel Book]