Captain Lu was aloof again today.

Chapter 151 Lock
A day passed, and the car seemed to have been abandoned in Panlong Lane in the old city, remaining there untouched.

Zhu Zhixin continued her routine as usual, going back and forth between work and home without any apparent abnormalities.

Chen Jin was completely baffled and fell into deep confusion.

"Zhu Zhixin looks respectable, could it really not be him? But if it's not him, then who could it be? And that woman in the surveillance footage, our people have been watching her for 24 hours, but she hasn't shown up. Has she vanished into thin air?"

In contrast, Lu Jingming remained calm and composed, saying unhurriedly, "What's the rush? If Zhu Zhixin really has a problem, he'll eventually slip up."

After reviewing Zhu Zhixin's information, Wei Qingsong shook his head and said, "I don't think it's him. Zhu Zhixin studied finance in college and doesn't have a background in psychology, while our suspect is clearly quite proficient in psychology."

"So he knew very well that the police would be very anxious if they couldn't find him. The more anxious they were, the less likely he was to reveal anything. Waiting around wasn't a solution either."

She rested one hand on the table, her fingers tracing the edge for a moment, and slowly said, "He is no more than thirty years old, has systematically studied psychology, and is very likely a dropout... The victims are all local students from Tangzhou. Check all the colleges and universities in Tangzhou that offer psychology majors, and find the list of students who dropped out, withdrew, or suspended their studies in psychology in the past five years."

"He must have recently suffered a huge shock, most likely witnessing death, the passing of a relative or lover, which caused him severe distress, and the cause of death is most likely suicide."

"He was a cold-blooded person, and the impression people around him had of him was that he was unapproachable and difficult to get along with, so he had almost no friends."

Chen Jin's mouth gaped open, almost big enough to fit an egg. After a long while, he said with a mournful face, "The scope of this portrait is far too broad."

Lu Jingming then reminded him, "There's another point: if Zhu Zhixin is innocent, how was his identity information leaked?"

This stumped Chen Jin, who asked blankly, "Yes, the registration information for the team leader of the Gray Project is Zhu Zhixin's, and the information is very complete, with the phone number and ID card matching."

Wei Qingsong quickly understood his meaning, her eyes bright: "Ask Zhu Zhixin if he has recently had his information leaked. If it has been leaked, he may have logged into some phishing software that collects information, or his information may have been stolen by someone around him. Therefore, we also need to investigate his interpersonal relationships and see if there are any people around him who meet the above conditions."

After Lu Jingming's reminder and Wei Qingsong's supplement, Chen Jin suddenly understood and his eyes lit up: "I understand, I will investigate according to this line of thought."

Upon further investigation, they indeed identified a man named Yin Xiheng within Zhu Zhixin's network of relationships.

An investigation revealed that Yin Xiheng is 27 years old and previously studied psychology at Tangzhou University. He was expelled for repeated thefts.

He and Zhu Zhixin had shared an apartment together for two years through a real estate agency. Later, he got a girlfriend and moved out of the shared apartment to live with her.

His girlfriend's name is Lian Qianyun. She is an ordinary employee of a small company and has a rather introverted personality.

Three months ago, Lian Qianyun was laid off from her company. Coupled with her habit of overspending, she was burdened with debt and under tremendous pressure after being laid off, which led to her developing tendencies toward depression and anxiety.

At the time, Yin Xiheng was working as a salesman at a business company. He was busy with work and frequently traveled for business, so he did not notice his girlfriend's unusual emotional state.

After losing her job, Lian Qianyun was rejected multiple times when she applied for jobs. She was also heavily in debt and, as someone who lived paycheck to paycheck, her savings were not enough to cover the shortfall.

Perhaps to maintain their relationship and self-esteem, or perhaps out of shame, she never told Yin Xiheng about her debts.

Facing setbacks in her job search and burdened with debt, Lian Qianyun was driven to suicidal thoughts. Overwhelmed by the pressure, she overdosed on sleeping pills.

Yin Xiheng had just returned home from a business trip, and it was evening. He saw his girlfriend asleep, but he didn't wake her up or notice anything unusual about her.

Frequent business trips left him exhausted, so he fell asleep as soon as his head hit the pillow that day.

The next morning, he was horrified to discover that his girlfriend's body was already cold.

After reviewing Yin Xiheng's information, Wei Qingsong had a strong intuition: "It's him."

Meanwhile, the police officers who had been keeping watch in Panlong Lane in the old city also made some discoveries.

The car remained parked outside the residential building in Panlong Lane. The police officers who were keeping watch were so sleepy that they could barely keep their eyes open. Finally, they saw a woman walk straight towards the car door.

After some questioning, the woman confessed that her name was Lian Qianzhen, she was twenty years old, and she was Lian Qianyun's younger sister.

Yin Xiheng and Lian Qianzhen were taken back to the Municipal Public Security Bureau one after the other.

At that time, Wei Qingsong was still looking at Lian Qianyun's information. She had a slight impression of the name, but she did not have Lu Jingming's photographic memory.

After Alice sent her the list of patients, she only glanced at it once.

There were too many names on the list, and she hadn't saved them on her phone. Right now, she really couldn't be sure whether Lian Qianyun was Mu An's patient or not.

If Lian Qianyun had also received psychological counseling from Mu An, then she could understand that this series of cases involving the Gray Project were all chain reactions caused by Mu An.

Thinking of this, Wei Qingsong slowly closed the document, his eyes deep and profound.

Inside the interrogation room, Yin Xiheng was impeccably dressed, his hair was neatly styled, and he wore black-rimmed glasses. He had a refined and cultured appearance, and one could almost tell from his appearance that he was a well-read and cultured man.

When Wei Qingsong went to crime scenes with his teacher in the past, he had seen many vicious and desperate criminals, as well as many hypocrites like Yin Xiheng, who were handsome in appearance but committed many evil deeds in secret.

The former are often vulgar in their speech and have blood on their hands, making them frightening to behold, while the latter always seem harmless, yet they kill people silently.

Both will be despised, but the former is often easy to identify, and it is easy to tell at a glance that he is a heinous person, while the latter is difficult to judge based on first impressions.

At first, Yin Xiheng refused to admit it, and said with a sarcastic laugh: "You police are too ridiculous. According to your investigation, all the registered information of that app belongs to Zhu Zhixin. Why don't you go find Zhu Zhixin and come to me instead? What's the point?"

Wei Qingsong lifted her eyelids and glanced at him, saying indifferently, "You don't know yet, do you? We've already caught Lian Qianzhen. She's so young, and she was easily bewitched by you, joining you in this revelry. Why don't you guess how long she can keep quiet?"

She paused, gave a light scoff, and said in a slow, deliberate voice, "Facing the glaring lights of the interrogation room and feeling the coldness of the chair beneath her, a twenty-year-old girl like her probably couldn't last long, could she?"

(End of this chapter)