The girl's gaze and movements were inconspicuous, light and quiet, not wanting to disturb the others who were reading.

But Zhang Yu was already at the door, and this time, he made direct eye contact with the two people entering.

Zhang Yu's gaze shifted from the disappearing figure of the strange female shop assistant to Han Xinyi and Yu Xing, adding a hint of surprise to his already chilling demeanor.

At first, he recognized this cute girl because a few days ago, she had sat in his work area reading a book for quite a while.

As for the young man next to her, it was the first time he had seen him, but with that appearance, he wouldn't forget him after just one meeting.

Hmm, what a coincidence. It seemed that recently there were always things that made him think of the day Ranran took a sick leave.

It seemed like things were being manipulated by an invisible hand, and he was the plaything about to be destroyed.

The second time, Zhang Yu remembered his current situation.

Regardless of the true identity of the substitute female shop assistant and whether she had any ill intentions towards him, he was still a librarian working at the moment.

It was inappropriate for unrelated customers to see him lose control of his expression...

He quickly put on a nonchalant expression, forcing himself to calm down and focus on work first.

If necessary, he could go to the police station after work and report the incident. With the recent uproar about the throat-slitting killer, the police wouldn't overlook even the smallest clue.

"Um, what's wrong with him?" Han Xinyi, who witnessed Zhang Yu's change in expression, asked in confusion.

"I don't know, maybe he remembered something about a book behind him and suddenly felt scared. He didn't manage his expression well," Yu Xing's answer was perfunctory, but Han Xinyi was thinking about treating her to a milk tea, so she just gave Zhang Yu another glance and then sat down with Yu Xing in the reading area.

She casually picked up two books and ordered two cups of milk tea.

Yu Xing chatted with her for a while, controlling the volume and conversation skills, and for a while, they chatted quite well.

Han Xinyi liked it, so Yu Xing recommended a book called "Decay" to her. After the atmosphere became even better, he steered the conversation towards Han Xinyi's company.

"Miss Han, to be honest, I am currently helping the police investigate a previous case. I want to ask you, do you have any enemies at the company?" Yu Xing confirmed that asking now wouldn't offend Han Xinyi, otherwise, it would be a waste of the mental image he had built for her.

"Enemies?" Han Xinyi was surprised at first, "No, I never have enemies..."

Then she realized, "Wait, the company? What do you mean? Are you saying that the person who wants to kill me isn't a random killer, but someone who knows me? Someone from my company?"

It had to be said that this girl had strong reaction ability, accurate intuition, and a much stronger personality than she appeared. She was truly someone who could seize opportunities in desperate situations.

Yu Xing thought that her personality would be suitable anywhere.

"That's right. Officer Gao didn't tell you before, for fear of scaring you. Actually, the person who wants to kill you is a colleague of yours."

Han Xinyi's breath hitched, and confusion appeared in her eyes.

"I didn't recognize his eyes at all... Who is he? Do I really know him?"

Yu Xing took out his phone and showed Han Xinyi a photo of Liu Ping, "His name is Liu Ping, and he's not in the same department as you, but he's on the same floor. He's the kind of person you see every day. Take a close look and see if you remember him."

Han Xinyi leaned over, and when it came to business, she restrained her admiration for Yu Xing and stared at the face in the photo for a long time.

Finally, she dug out something related to this face from her memory, "Ah, I remember, there is such a person!"

Yu Xing then asked, "Did anything happen between you?"

"I don't remember clearly, it seems that I passed by his workstation to deliver some documents and accidentally knocked over his water. It wasn't serious, and there was no damage. After I apologized, he forgave me." Han Xinyi stared at Liu Ping's photo, feeling a tingling sensation on her scalp and a strong sense of fear on her face, "I didn't offend him, did I? Why does he want to kill me?"

...

The next day, Yu Xing once again entered the interrogation room.

Liu Ping's demeanor was noticeably more tense than the day before. Seeing him was like seeing a ferocious beast, with a forced calmness in his eyes that couldn't hide his defenses.

"Relax," Yu Xing smiled at him and casually sat down in the chair. He was wearing an earpiece, connected to the observation room outside the interrogation room. Every move and every word between him and Liu Ping was being displayed in the eyes of Yu Jiaming, Gao Changan, and the other team members standing in the observation room.

Today, he had applied to interrogate Liu Ping alone. Normally, this would not be in accordance with the rules, but due to the urgency of the case, the rules were no longer important.

As long as he didn't say anything, the team wouldn't say anything, and the higher-ups wouldn't know.

Hearing about Liu Ping's loosened attitude yesterday, even Yu Jiaming, who had never met Yu Xing, came to personally observe the interrogation.

Knowing that he was surrounded by "unseen" scrutiny, Yu Xing remained as natural as usual, without any discomfort. Today, he still faced Liu Ping with a smile, as if to say, "I'm about to do something."

This made Liu Ping very uncomfortable.

Yu Xing reassured him, "Don't be afraid, there are so many detectives in the police station, I won't hit you."

This opening remark made Liu Ping's eye twitch. He had always been the one being interrogated by the police, and this guy immediately put him in a weak position. For some reason, this made him feel looked down upon, which was very uncomfortable.

Was he afraid of being hit?

Yu Xing's mouth curved into a smile, and after a friendly greeting, he didn't give Liu Ping any buffer time, getting straight to the point, "When you were at the company, did you really not have any contact with Han Xinyi?"

Liu Ping was clear about this question and suppressed his displeasure, answering calmly, "I've said it to the police many times, we only met in passing."

"Anything else?"

Liu Ping said, "Nothing."Just now, Yu Xing, who was full of smiles as if chatting casually, suddenly turned cold, and his tone seemed to be wrapped in a layer of ice: "Lies."

Liu Ping's lips tightened, and the corners of his eyes deepened: "Where did I lie?"

Yu Xing looked at him coldly, as if he had already grasped some key evidence, and his words were as sharp as a knife: "Yesterday, I went to find Han Xinyi. After she knew your identity, she recalled something. Guess what she said?"

Liu Ping stiffened for a moment, looking at Yu Xing's serious face, feeling a little scared of the other party's momentum for no reason. He subconsciously leaned back, his brain running at high speed, and after a while, he couldn't think of any evidence that could be caught. He raised his voice and asked, "Huh, what did she say!?"

In the face of opposition, the coldness on Yu Xing's face suddenly faded, and he smiled again: "Actually, she didn't say anything crucial, just mentioned that once, she accidentally spilled water on your desk while walking. And you told her it was okay, and then you had no further interaction."

Liu Ping: "......"

The several criminal police officers who were eavesdropping outside: "......"

Xiao Gu couldn't help but ask, "Is there such a way to interrogate? Is Yu Xing an actor who changes faces back and forth?"

Yu Jiaming didn't speak, looking at the overly experienced stranger in the monitoring room, but Gao Changan answered Xiao Gu, "Yu Xing is destroying Liu Ping's vigilance. After several times, Liu Ping, who has experienced tension and false alarms repeatedly, will not be able to bear it. His emotions will be in chaos, and the flawless argument will appear with flaws."

Xiao Gu was speechless for a while.

Even if this technique is useful, under normal circumstances, they, as criminal police officers, do not change faces so naturally. It looks abnormal, like a mental patient.

Yes, Xiao Gu felt that Yu Xing could directly play the role of a mental patient in a patient's gown now. Not to mention Liu Ping who faced Yu Xing face to face, even he felt scared watching from the outside.

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In the interrogation room, Liu Ping was also shocked.

This sudden shock.

The guy who had just been as cold as if he was going to kill someone in the previous second, suddenly smiled in the next second. The strong sense of contrast made him feel weak.

He breathed a sigh of relief, knowing that Yu Xing was deceiving him. This just happened to show that the police had no evidence to prove that there was a hidden truth. Thinking of this, Liu Ping suddenly relaxed again.

But at this moment, as if deliberately teasing him, Yu Xing said as if chatting, "But you were guilty just now."

Liu Ping snorted coldly: "How do I not know if I'm guilty?"

"Because you were thinking just now, whether you have done something that left traces and evidence. When you found out that you didn't, you suddenly became tough, found an opportunity to refute me aggressively, so your tone raised." Yu Xing did not pause at all, and succinctly described Liu Ping's mental activities.

He smiled, and before Liu Ping could retort with a change in his expression, he continued, "It shows that you did hide something related to Han Xinyi, but it has nothing to do with the company. Hmm... that would be something after work, right? Something related to Han Xinyi, which made you choose her from so many people as the target. What could it be?"

The tone rose at the end, making it difficult for people to grasp the meaning.

A drop of cold sweat fell from Liu Ping's forehead, and a hint of fear appeared in his eyes as he looked at Yu Xing.

Why did this person think of so much about a detail that others might not even care about!?

Several criminal police officers outside the interrogation room also looked surprised.

Yu Jiaming's eyes gradually lit up, and Yu Xing's words gave him a new idea. Intuition told him that this might be a key!

This time, Yu Xing didn't even ask for Liu Ping's opinion, but continued to speak to himself, "This decision determined the factor for your target, and it is also the reason why you can avoid the surveillance cameras, know Han Xinyi's preferences and habits, and completely control her whereabouts. And the only person who can do this around Han Xinyi is one person, right?"

"Her uncle, Han Zhiyong." Yu Xing provocatively glanced at Liu Ping, and Liu Ping's face suddenly turned pale. He clenched his hand on the table, and his veins bulged, apparently being hit on the mark.

"Let me, a non-criminal police enthusiast, irresponsibly guess..." Yu Xing crossed his arms, even leisurely crossed his legs, and the desk lamp on the table emitted an overly bright light, making Liu Ping's eyes dazzled, unable to see Yu Xing's face clearly.

"Some time ago, you kept seeing reports about throat-slashing cases in the media, so you, who have an antisocial personality but have been living as an ordinary person in society, were mentally touched. The bloodthirsty factor hidden in your soul was stirring, and at that time, you thought of imitating the crime. Not only could you easily escape the police's tracking with the same method, but you could also shift the blame to the throat-slashing culprit, killing two birds with one stone, with extremely low risk."

"At this time, you noticed Han Xinyi in the company. An accidental incident of spilling a water glass made you remember this smiling girl. Although you had no further interaction with her later, for some reason, when you wanted to kill someone, she was the first to come to mind."

"The more something appears happy and beautiful, the more you want to destroy it. Han Xinyi is such a person who seems to never be unhappy. You are jealous and puzzled, so you want to destroy her."

"But your intelligence is not as good as the throat-slashing culprit. You don't know how to do it without leaving evidence. Just when you were itching but hesitating, someone approached you and told you that if you did as he said, you could kill Han Xinyi."

"Liu Ping looked at Yu Xing in horror. At this point, he began to suspect whether the police had already obtained concrete evidence, otherwise how could they be so clear and without error?"

"This person contacted you anonymously, and you happened to want to kill Han Xinyi desperately, so you agreed. After that, you got all the information you wanted and were guided on how to commit the murder." Yu Xing yawned, "Do you think my guess is interesting?"Liu Ping retorted with a pale face: "The existence of this person is entirely your speculation!"

"Yeah, I said it, it's just irresponsible speculation, don't get excited~" Yu Xing spread his hands, his eyes lifting at the corners, giving off an increasingly dangerous vibe, "Let me guess again, after that person had been in contact with you for a while, he even told you—"

His tone turned ominous, as if mimicking another imagined voice: "I am the throat-slitting killer. I know what you're planning. Since you want to pin the crime on me, why not collaborate? In a few days, I won't be at the Flower Market. You commit a crime when it rains, and I'll have an additional alibi."

"At this point, you, feeling not so secure, took the time to investigate more information and discovered that Han Xinyi's uncle, Han Zhiyong, is going on a business trip to another province in a few days. Thus, you became convinced that the throat-slitting killer is Han Zhiyong."

"!" Liu Ping's eyes widened, he stammered, unable to speak, his whole body trembling.

Meanwhile, the criminal detectives outside the interrogation room became excited after hearing Yu Xing's words and seeing Liu Ping's reaction.

"Is it true? How does he know all this?"

"Is Han Zhiyong the throat-slitting killer?"

"Looking at Liu Ping's reaction, Yu Xing must have hit the mark. Quick, go check where Han Zhiyong was during the previous throat-slitting cases!"

After a chaotic moment of orders being given, Gao Changan watched the interrogation room through the monitor, a sense of incredulity rising in his heart.

This young man, Yu Xing... on what basis did he provide such an answer?