Reborn in 1995, Criminal Investigation Records

"Who is he?" Not only Zhou Yang, but even Wang Chao, who was driving, unconsciously tilted his ear back a little.

Liu Chengyu organized his thoughts: "The son of an entrepreneur!"

"Gong Hongxing?" Wang Chao asked tentatively, and when he saw Liu Chengyu nod, he couldn't help but gasp.

Zhou Yang frowned. He had heard the name Gong Hongxing countless times in Ning'an. Gong Hongxing was a criminal police officer in the city bureau before. He gave up his secure job to go into business and made a name for himself in just a few years, becoming Ning'an's leading entrepreneur.

There were rumors that if he didn't leave, the position of brigade leader would be his; otherwise, it wouldn't be Liu Chengyu's turn.

Gong Hongxing has never directly addressed this claim, but for Liu Chengyu, it's like a thorn in his side; whenever Gong Hongxing's name appears, it's brought up again.

"We used to be partners, and we had a really good relationship!" Liu Chengyu readily admitted, looking at the two of them, before turning his gaze to the window.

"How could we know each other..." Wang Chao swallowed his words halfway through. Liu Da, Gong Hongxing, and Wang Zhenhai were colleagues before. When Gong Hongxing left the police force, his son was already fifteen or sixteen years old. It makes sense that Wang Zhenhai, who was in charge of the autopsy, notified Liu Chengyu after discovering this.

"Xiao Jun was quite mischievous when he was young, not just ordinary mischievous. Hong Xing always blamed himself for not having enough time to spend with him. When he resigned, his son was a big part of the reason!" Liu Chengyu sighed.

Unexpectedly, the three of them crossed paths again in the blink of an eye because of the death of each other's son, Gong Xiaojun.

......

Zhou Yang did not see Gong Hongxing; Gong was away on a business trip. He had already received the news and would probably not be back until late at night. The first person Zhou Yang saw was Gong Xiaojun's mother, He Ying, a woman who looked slightly old.

The body identification took place at the funeral home. Judging from the person's mental state, they probably came directly to the police station after identifying the body.

"...Chengyu!" He Ying cried out, tears streaming down her face.

"Sister-in-law..." Liu Chengyu jogged a few steps and helped her up.

He used to have a good relationship with Gong Hongxing. In addition, Gong Hongxing got married early, and Liu Chengyu often went to Gong Hongxing's house for meals, so they naturally became familiar with each other. Although in recent years, due to his status, they have seen each other much less.

But when they meet again now, in the same situation, the initial awkwardness quickly disappears.

"Please, please, you must catch the murderer, you must..." He Ying said, her voice breaking with sobs.

"Sister-in-law, I'm a police officer, this is my duty!" Liu Chengyu nodded.

"I don't want to hear that. I want you to tell me yourself that you will catch him, that you will catch him!" He Ying grabbed Liu Chengyu's sleeve, her voice laced with a hint of ferocity, her thin knuckles turning white, a testament to her immense strength.

"Sister-in-law, I promise you, I guarantee I will catch the murderer!" Liu Chengyu solemnly promised.

"Remember your promise!" He Ying said, then refused the policewoman's help and staggered away. Fang Duo happened to come in from outside and saw Wang Chao's expression. She jogged up behind him and stayed until she saw him get into the car before returning.

"Five minutes later, a case discussion meeting!" Liu Chengyu didn't pass on the pressure to his colleagues, his tone remaining normal.

......

"Gong Xiaojun, male, 7 years old, former legal representative of Baiweimei Food Factory, residing at... Due to prolonged immersion in water and the sealed environment, the estimated time of death is between 3 PM and 8 PM on July 9th. The cause of death is traumatic shock resulting from severe traumatic brain injury combined with compression injury to thoracic organs..."

At this point, Dai Yan paused and explained briefly: "Forensic doctor Wang determined that the deceased was first struck with a blunt instrument, then crushed by a heavy object, resulting in a combined cause of death!"

Zhou Yang took the photos that were sent to him. On the lower back of the deceased, a clearly defined semi-circular pale area could be seen.

"What's this?" Zhou Yang turned the photo around: "A water tank cover?"

"Yes!" Dai Yan adjusted his glasses and added, "Our initial suspicion is that the perpetrator first used a blunt object to repeatedly strike the victim's head, and then used the water tank lid to press down on the victim's back..."

"That's ruthless!" Xiao Jiale exclaimed, echoing the sentiments of everyone present.

"That's not all!" Dai Yan handed over another photo: "Look at the wrist, everyone. The two obvious cuts were caused during the near-death period."

"The murderer used three methods in total: first, he struck the victim with a blunt object; then, he pressed the victim down with a heavy object; and finally, he cut the victim's wrist to bleed him into shock..." Dai Yan summarized and then sat down. This was the first time he had ever seen a case with so many methods.

"Fourth, it should be!" Xiao Jiale stared at the photo in his hand: "Finally, fearing the deceased might not be dead, the murderer even threw him into the water tank!"

As Zhou Yang flipped through the report in his hand, he found the victim's tissues on the edge of the water tank, and abrasions were also found on the victim's chest and abdomen, indicating that the murderer had indeed suspended the victim's body halfway in the air at the time.

"He really doesn't treat the dead like human beings!" Fang Duo muttered, and many people nodded in agreement.

Judging from the method of the crime, the murderer did indeed treat the victim in a way that resembled that of an animal: first, he would beat the victim half to death, then hold him down and let him bleed out while he was hanging upside down.

Zhou Yang stopped flipping through the wounds on the deceased's head. The report stated: "Five similar lacerations were visible on the back of the head, clustered together, with an area of ​​approximately 7cm x 5cm."

Main wound: A 5.0cm × 1.8cm star-shaped contusion with irregular edges and a contusion width of 0.3cm. Tissue bridges are visible in the wound cavity.

Secondary wounds: On its upper left and lower right, there are smaller contusions measuring 2.0*1.5*0.8... with intersecting wound angles and partially overlapping wound edges.

Extensive contusion and diffuse subcutaneous hematoma were observed on the scalp surrounding the wound. Multiple interstitial bleeding was visible in the hematoma area. A comminuted fracture of the skull was observed in the corresponding location, with fracture lines radiating outwards in a cracked pattern. Many bone fragments were displaced and depressed...

Zhou Yang looked at the description in the report, then gestured with his hands to indicate the name, and took a ruler to scribble a few lines on the paper.

Suddenly, he felt the room fall silent, and everyone's eyes seemed to be on him.

"Did Liu Da ask you if you've discovered anything?" Wang Chao whispered, covering his mouth with one hand and glancing to the left.

"No, it's just a suspicion. I'll go to the technical team to confirm it later!" Zhou Yang said.

Liu Chengyu nodded and then began to assign tasks. The case was more likely to be classified as a revenge killing, so the focus of the investigation was on the social relationships of the deceased, Gong Xiaojun.

However, due to his father Gong Hongxing's connections, the police cannot rule out the possibility that the murderer took revenge on Gong Xiaojun in order to get back at Gong Hongxing.

Another task is to conduct door-to-door visits in the neighborhood. Based on the on-site investigation, the rooftop is the primary crime scene, so it is necessary to conduct a thorough investigation of the surrounding residents.

......

The moment the meeting ended, Zhou Yang jogged into the technical team to find Wang Zhenhai.

"Teacher Wang, if the murder weapon was a padlock, would it have caused this kind of wound on the victim's head?" Zhou Yang asked, voicing his doubts.

Upon hearing this, Wang Zhenhai picked up the autopsy report and pondered for a moment: "The conclusion that it was a blunt instrument with a hard texture and sharp edges cannot guarantee its uniqueness!"

Zhou Yang got the answer he wanted, but still had questions: "Didn't any substance get extracted?"

According to the principle of material exchange, no matter what kind of blunt instrument is used, it will leave traces or minor scratches. The greater the force and the more times it is used, the more complete the material exchange. In cases like the lacerations of the deceased, the material from the striking object is more likely to embed into the tissue.

Wang Zhenhai said irritably, "Didn't you notice that the autopsy report was delivered much faster this time? Besides, the extraction of trace evidence isn't done by the naked eye; it requires a stereomicroscope, an energy dispersive spectroscopy instrument, rinsing the wound cavity with distilled water, and then rinsing and filtering it again. Doesn't that take time?"

Most importantly, he didn't mention that high-end, expensive, and complex large-scale equipment like energy dispersive spectrometers and scanning electron microscopes are not something Ning'an can possess, but he has already been working hard to obtain them!

Zhou Yang was naturally unaware of these things. With his perspective from later generations, he thought these instruments were the most basic and forgot that it was only 1995.

His task today is to work with Fang Duo to investigate the deceased's interpersonal relationships!

However, after this investigation, both of them became somewhat insecure.