Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Zheng Guobin covered his face and cried, "I was afraid he would wake up, so I picked up the steel pipe and hit him in the chest twice more until he stopped moving... Later I found out that his fingernail scratched my arm, leaving a mark that is still there." He rolled up his sleeve, and sure enough, there was a light brown scratch on his arm, which perfectly matched the forensic examination report that "Chen Gang's right ring fingernail was broken, and there was fresh bleeding at the break."

Beside the factory's drainage ditch, Zheng Guobin pointed out the location where Chen Gang's cell phone and car keys were discarded: "I threw his cell phone and car keys here. The cell phone was black, and there was a lucky charm hanging on the car keys—he said it was a gift from his daughter." Technicians immediately began retrieval from the drainage ditch, and half an hour later, they indeed found a black cell phone and a set of car keys with a lucky charm. After confirmation by Chen Gang's family, these were indeed the items Chen Gang had used before his death.

During the identification process, Zheng Guobin also explained in detail the truth behind the "5 yuan transfer": "That 5 yuan was borrowed from a gambling friend. I originally wanted to pay it back to Chen Gang, but he insisted on calling the police to arrest me. I thought that if I killed him, I wouldn't have to pay the money back, so after transferring the money, I withdrew the cash." He pointed to an ATM near the factory: "I withdrew the cash from there, and after withdrawing it, I threw away the bank card." Based on his identification, the technicians found an abandoned bank card in the trash can next to the ATM. Upon verification, it was confirmed to be the bank card corresponding to the "ghost account".

The entire identification process lasted three hours. Zheng Guobin's confession perfectly matched the key information from the preliminary on-site investigation and forensic examination: the steel pipe at the murder location matched blunt force trauma; the drag marks along the disposal route matched work boot prints and the body's shape; the location of discarded items matched the family's description; and the details of the 50,000 yuan transfer corresponded to bank statements. Each step of the identification precisely linked to the preliminary investigative evidence, forming a complete closed loop of evidence.

As Zheng Guobin was put back into the police car, the sun had risen high, casting a warm golden glow on the factory ruins, yet it couldn't dispel the somber atmosphere. Zhang Hui stood in the factory's open space, watching the technicians pack the newly extracted evidence into boxes. He knew in his heart that this identification not only revealed the truth of the case but also irrefutably proved Zheng Guobin's crimes, bringing long-overdue justice to Chen Gang's family.

As the police car drove away from the factory, Zheng Guobin leaned against the window, watching the ruins recede into the distance, his eyes filled with remorse. He knew that his confession and identification could not make up for the lost life, and that he would face the full force of the law. For the police, the end of this identification process meant that the case could finally proceed to the prosecution stage, and a just verdict could comfort Chen Gang's soul in heaven.

Less than a week after the Zheng Guobin case was closed, the Criminal Investigation Detachment received another call from security guard Lu Chuan, who immediately led a team to the crime scene.

The ventilation system in the underground parking lot of Haotian Building hummed, and the smell of car exhaust and dust filled the empty space. At 9:15 a.m., as cleaning worker Li Guiqin pushed her cleaning cart to a corner of the B2 level, she suddenly caught a glimpse of a figure lying on the ground next to a parking space. At first, she thought someone was resting there after drinking, but as she got closer, she realized it was a naked male corpse. The skin looked bluish-gray under the pale lights. She was so frightened that she dropped her cleaning tools with a clatter and scrambled to the elevator entrance, trembling as she dialed the police.

Fifteen minutes later, Lu Chuan's police car pulled up at the entrance of Haotian Building, its red and blue flashing lights reflecting a blinding light off the glass curtain wall. "Immediately seal off the entrances and exits of the underground parking lot, prohibiting any vehicles or personnel from entering or exiting!" Lu Chuan pushed open the car door, his black leather shoes clicking crisply on the marble floor. He gave the order into the walkie-talkie, "Notify the building management to retrieve the surveillance footage from the underground parking lot and its entrances and exits for the past 24 hours, especially the footage from level B2. Make sure to preserve it completely, without any omissions."

Yang Lin and Yang Sen, carrying their investigation bags, followed Lu Chuan into the underground parking lot. The B2 level was dimly lit, with only faint light from the overhead lights every 10 meters. The corner where the body was located was at the edge of a blind spot in the surveillance system, only half of the parking space could be captured. "Male body, initially estimated age 30-40, height approximately 180cm," Yang Lin said, crouching two meters away from the body, his investigation light beam precisely focused on it. "Completely naked, no clothing or personal belongings found; the body is supine, hands naturally at the sides; there is a 3cm long scratch on the left palm, with clean edges, suspected to be caused by a sharp object; there is a circular pressure mark on the right ankle, about 1cm wide, with slight skin damage at the edges, suggesting the body was restrained before death."

Yang Sen moved slowly across the ground with a footprint light. The light swept across the dust-covered surface, clearly revealing multiple sets of footprints. "I found a set of size 44 men's leather shoe prints," he measured, pressing a ruler close to the ground. "Stride length 80 cm, stride width 19 cm, stride angle 3 degrees outward, estimating height 183-188 cm. The shoe prints show concentrated pressure on the forefoot, dragging marks on the heel, and a small amount of white powder on the edges, preliminarily identified as putty powder used in renovations, consistent with the powder composition of the recently renovated B1 floor area of ​​the building." On the ground of the parking space next to the body, he also found a set of size 38 women's high-heeled shoe prints. "Stride length 65 cm, stride width 15 cm, the edges of the prints are blurred, partially covered by leather shoe prints, suggesting that the woman had been near the body, and later than the owner of the leather shoe prints."

On a parking lot pillar, Yang Lin discovered a fresh scratch. "The scratch is about 20 centimeters long and 4 centimeters wide," he said, scraping off some debris from the edge of the scratch with tweezers and placing it in an evidence bag. "The scratch has a metallic sheen, and preliminary observation suggests it's chrome-plated. It was likely caused by friction from a vehicle bumper or metal tool. The scratch is about 1.2 meters high, matching the height of a typical car bumper, suggesting it was left by a vehicle accidentally rubbing against the pillar while parked. Further confirmation is needed to determine if it's related to the case." Below the scratch, he also found several drops of light brown liquid on the ground. Testing with a test strip showed a positive result, suggesting possible bloodstains. "Samples will be taken and sent to the lab for testing to confirm whether it's related to the deceased."

Wang Shuai led Li Guiqin to the security booth at the parking lot entrance, preparing to question her about the reported incident in detail. Li Guiqin sat in a chair, her hands still trembling, clutching the crumpled corner of her cleaning uniform tightly. "Take your time, don't rush. Tell me in detail how you discovered the body," Wang Shuai said, handing her a glass of warm water, his tone gentle, trying to ease her tension. (End of Chapter)