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

His explanation perfectly matched the black plastic fragments found next to the pillar during the initial investigation. Technicians compared the fragments with the bumper on the spot and confirmed that they belonged to the same vehicle part.

Following Zhang Jianjun's directions, the group arrived at a parking space in the corner of B2 level—the very spot where Li Zhiguo's body had been found. "What did you do while you were waiting for Li Zhiguo here?" Wang Shuai asked, the camera focused on the markings on the ground. Zhang Jianjun's body visibly stiffened, a flicker of fear in his eyes: "I hid the cotton rope behind my back and leaned against a pillar to wait for him. He came over from the elevator after about 15 minutes." He pointed to the elevator entrance not far away. "When he came over, he asked me, 'Did you bring the money?' I said, 'Let's talk inside,' and led him to the corner."

At the "waiting location" identified by Zhang Jianjun, technicians extracted another set of size 44 leather shoe prints: "Stride length 80 cm, stride width 19 cm, stride angle 3 degrees outward, which is completely consistent with the shoe prints found next to the body earlier. Moreover, the white putty powder on the edge of the shoe prints is the same as the putty powder in the B1 floor decoration area, confirming that it was left by Zhang Jianjun."

"What happened after you and Li Zhiguo got here?" Wang Shuai pointed to the spot where the body was found, the body camera sweeping across the bloodstains on the ground. Zhang Jianjun's breathing became rapid, his voice trembling: "He asked me, 'What do you want?' I said, 'Don't call the police, I'll give you another 1 yuan.' He disagreed and took out his phone to call 110. I panicked and rushed at him to grab his phone. When he resisted, his left palm hit the utility knife in my pocket—I took that knife from the B1 renovation area, intending to use it to cut the rope, but I didn't expect it to cut him."

He pointed to a bloodstain on the ground: "His hand was bleeding, and he was shouting 'Murder!' I was afraid someone would hear me, so I took out a cotton rope from behind me, wrapped it around his neck, and strangled him hard. He struggled violently, kneeing me in the stomach and scratching my arm. I was in so much pain that I tightened my grip even more until he stopped moving." Zhang Jianjun's description perfectly matched the autopsy results of forensic doctor Zhang Kai—the 3×0.8cm sharp instrument scratch on Li Zhiguo's left palm, the 5×3cm band-shaped subcutaneous hemorrhage on his neck, and the skin tissue fragments under his right fingernails all corresponded to Zhang Jianjun's confession.

At the "fighting location" identified by Zhang Jianjun, technicians sprayed the ground with luminol reagent, and the pale blue bloodstains clearly showed fluorescence: "The bloodstains were splattered, which is consistent with the bleeding characteristics of ruptured blood vessels in the neck caused by strangulation. The DNA of the bloodstains matched Li Zhiguo's DNA perfectly, confirming this as the primary crime scene."

"What did you do after Li Zhiguo lost consciousness?" Wang Shuai continued to press, the camera panning to the ventilation duct entrance not far away. Zhang Jianjun swallowed hard, his eyes filled with remorse: "I touched his nose, he wasn't breathing, and I panicked. I took off his clothes, trying to make sure no one recognized him, then dragged him behind this parking space and covered him with some dry leaves." He pointed to the ground behind the parking space, "After that, I threw his phone, wallet, and utility knife into the ventilation duct, afraid someone would find them."

Technicians extracted black cotton and linen fibers again at the entrance of the ventilation duct: "The fiber composition is completely consistent with the cotton and linen rope found in Zhang Jianjun's storage room, and the mobile phone and wallet remains in the duct match the characteristics of Li Zhiguo's items. The DNA of the bloodstains on the utility knife also matches Li Zhiguo's, confirming that they are the murder tools and the victim's items discarded by Zhang Jianjun."

"Why did you take off Li Zhiguo's clothes? Why did you choose to hide him here?" Wang Shuai asked, his eyes fixed on Zhang Jianjun. He lowered his head, his voice so soft it was almost inaudible: "I was afraid there were my fingerprints or fibers on his clothes, so taking off his clothes would reduce the evidence; this is a blind spot for surveillance cameras, and few people come here usually. I thought I could hide it for a while, and once the body decomposed, no one would know who it was. I didn't expect the cleaning lady to find it the next day..." His explanation completely corresponded to the "naked body" and "blind spot for surveillance cameras" found during the initial investigation, further confirming his crime.

The entire identification process lasted two hours. Every statement made by Zhang Jianjun corresponded precisely with the results of the previous on-site investigation and forensic examination: the tire tracks at the parking location matched the characteristics of the vehicle, the bloodstains at the fighting location matched Li Zhiguo's injuries, the ventilation ducts of the discarded items matched the extracted physical evidence, and even his mentions of the "source of the utility knife" and "how the cotton and linen rope was used" completely matched the tools in the B1 floor renovation area and the fiber composition of the forensic examination.

As the identification process concluded and officers tried to lift Zhang Jianjun up again, he suddenly broke free, knelt down in front of the spot where the body had been found, covered his face with his hands, and wailed, "I was wrong... I shouldn't have killed him... I'm so sorry to his family..." His cries echoed in the empty parking lot, but they could no longer bring back the life that had been lost. Wang Shuai, watching the scene unfold, turned off his body camera. He knew that this identification not only revealed the complete truth of the case but also irrefutably proven Zhang Jianjun's guilt, bringing long-overdue justice to Li Zhiguo's family.

As the police car drove away from Haotian Building, sunlight streamed into the parking lot entrance. Wang Shuai sat in the passenger seat, looking at the identification record in his hand. Every detail was marked "matches the evidence." He took out his phone and sent a message to Lu Chuan: "Zhang Jianjun's on-site identification is complete. His confession details are completely consistent with the investigation and autopsy results. The chain of evidence is closed, and the case can be transferred to the procuratorate for prosecution." Lu Chuan quickly replied: "Thank you for your hard work. Justice will not be absent."

The carriage was silent, save for Zhang Jianjun's suppressed sobs and the roar of the car engine. Wang Shuai watched the Haotian Building recede into the distance outside the window, recalling the devastated state of Li Zhiguo's wife when her identity was confirmed, and the naked corpse found in the corner of the parking lot. He finally breathed a sigh of relief—this investigation, spanning several days, had finally brought justice to the deceased with the most complete chain of evidence, and Zhang Jianjun would ultimately pay the price for his greed and cruelty under the severe punishment of the law.

Less than five days after the Zhang Jianjun case was closed, the Criminal Investigation Detachment received another report that a body had been found in Beishan Grassland.

The early autumn pastures still retained the green of summer, and morning dew clung to the blades of grass, refracting the sunlight. Shepherd Li Jianshe was driving his flock deep into the pasture when, as the sheep reached the foot of a shady slope, several sheep suddenly stopped and began bleating uneasily at the grass behind the slope. Li Jianshe found this strange, picked up his shepherd's staff, and parted the grass—there lay a male corpse curled up in the grass. (End of Chapter)