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

Yang Lin took out his phone and dialed Lu Chuan's number: "Captain Lu, the technical department's identification results are in! The fiber is a cotton-polyester blend, commonly found in work pants; the brown soil came from near an abandoned fertilizer plant in the suburbs; the handcart was indeed the tool used to move the body, and the wheel tracks and rubber fragments match. We recommend focusing on investigating current or former employees of the logistics park, especially those who live near the abandoned fertilizer plant, wear cotton-polyester blend work pants, and those who have recently used the handcart in the freight area."

Lu Chuan's voice came from the other end of the phone: "Okay! I've already had Wang Shuai check the residential addresses of the logistics park employees, especially the former employee, Lao Chen. Although Li Zhiguo said the person in the blue overalls wasn't Lao Chen, Lao Chen lives near the abandoned fertilizer plant and previously worked in the freight area, so he's familiar with the location of the handcarts. We can't rule him out. Go back to the logistics park now and assist Wang Shuai in checking employee information, especially Lao Chen's whereabouts, and the usage records of that handcart yesterday afternoon."

After hanging up the phone, Yang Lin and Yang Sen immediately drove back to the South Suburb Logistics Park. It was already 10 p.m., and the logistics park was quiet except for the light in the security room. Wang Shuai was in the security room, checking the list of logistics park employees and their addresses one by one.

"Captain Wang, we're back!" Yang Lin pushed open the door and walked into the security room. "The technical department's identification results are in. The suspect may live near the abandoned fertilizer plant and was wearing cotton-polyester blend work pants. We'll focus our investigation on employees living in that area."

Wang Shuai looked up and pointed to a name on the list: "I've found it. The former porter, Lao Chen, lives in the urban village next to the abandoned fertilizer plant. Lao Chen used to work in the freight area, where he used a handcart to transport goods every day, so he's very familiar with the freight area. In addition, among the current employees of the logistics park, there is a loader named 'Li Wei,' who also lives near the abandoned fertilizer plant. Yesterday afternoon, someone saw him using a handcart in the freight area, but he said he was transporting goods. Nobody knows what he was transporting."

Yang Sen took the list and looked at Li Wei's information: "Li Wei, male, 42 years old, 171 cm tall, medium build, has worked at the logistics park for 3 years, and lives in a village in the southern suburbs—near the abandoned fertilizer plant. His height and build are very similar to the suspect's characteristics, and he used a handcart yesterday afternoon. He is a prime suspect!"

Yang Lin added, "We also need to check if Li Wei was wearing cotton-polyester blend work pants, if he wore size 42 safety shoes, and if he smokes 'Hongtashan' cigarettes. In addition, although Lao Chen has been ruled out by Li Zhiguo, he lives near the abandoned fertilizer plant and is familiar with handcarts, so we also need to further verify his whereabouts yesterday afternoon."

Wang Shuai nodded: "I've already arranged for my team to investigate Li Wei and Lao Chen's whereabouts. In addition, we've retrieved the surveillance footage from the logistics park's freight area yesterday afternoon—although the warehouse area's surveillance cameras are out of service, the freight area's cameras are still working. The footage shows that at 3 p.m. yesterday, Li Wei pushed a red handcart from the freight area toward the west wall. He returned 40 minutes later with an empty cart, looking flustered. This perfectly matches our prediction that the suspect used a handcart to move the body!"

"Great!" Yang Lin said excitedly. "Li Wei is a prime suspect! His height, build, address, and the time he used the handcart all match the clues we have. Next, we'll focus on investigating Li Wei, collecting his fingerprints and DNA, comparing them with the cigarette butts and fibers found in warehouse number 13, and checking the material of his work pants and shoe size. As long as these match, we can confirm that he is the suspect!"

Yang Sen took out his camera and pulled up a photo of Li Wei—he'd gotten it from the logistics park's HR department. In the photo, Li Wei was wearing blue overalls with a white logo on the chest, perfectly matching Li Zhiguo's description of the suspicious person "wearing blue overalls and having a white logo on the chest!" "The person Li Zhiguo mentioned wearing blue overalls is Li Wei!" Yang Sen pointed to the photo. "Look at his overalls, blue with a white logo on the chest, exactly as Li Zhiguo described!"

By now, the sky outside the window was beginning to lighten with the first hint of dawn. A night of hard work had finally yielded a major breakthrough. Yang Lin, Yang Sen, and Wang Shuai exchanged glances, all seeing excitement in each other's eyes—Li Wei's appearance had given the investigation into the murder case in the warehouse of the South Suburb Logistics Park a clear direction. "Let's go to Li Wei's place now!" Wang Shuai stood up, grabbed his coat, and said, "First, we'll verify the material of his work pants and the size of his shoes, then we'll check his residence for any evidence related to the case, such as brown soil, 'Hongtashan' cigarette butts, and clothing that might be stained with blood!"

The three drove to a village in the southern suburbs, navigating narrow alleys before finally stopping in front of a dilapidated residential building—Li Wei's home. They went up to the second floor and knocked on Li Wei's door.

"Who is it?" Li Wei's voice came from inside the door, tinged with a hint of wariness.

"Li Wei, we are from the Criminal Investigation Division. We need your cooperation in the investigation of a case. Please open the door!" Wang Shuai showed his police ID.

There was silence for a few seconds inside the door, followed by rustling sounds, as if someone was packing something. About 10 minutes later, the door slowly opened, and Li Wei, wearing a gray short-sleeved T-shirt and black trousers, with messy hair and evasive eyes, said: "Officer, what do you want? I was working at the logistics park all day yesterday, and I didn't do anything wrong."

Wang Shuai walked into the room and scanned the space with his eyes: "We want to ask you, what goods were you transporting in the freight area with a handcart from 3:00 pm to 3:40 pm yesterday? Why were you pushing the handcart towards the west wall?"

Li Wei's face turned pale instantly, his eyes filled with panic: "I...I was just carrying some cardboard boxes. I went towards the wall because there's a temporary storage area there, and I put the boxes there..."

"A temporary storage area?" Yang Lin chimed in. "We asked the logistics park's administrator, and there's no temporary storage area near the west wall at all. You're lying! Besides, we'd like to see your work pants, especially the blue one!"
Yang Lin's words struck Li Wei like a hammer blow, instantly turning his face from pale to ashen. He instinctively took a step back, clutching his clothes tightly, his eyes darting away, unable to meet Yang Lin's gaze: "I...I misremembered. It wasn't a temporary storage point. I just...I just went to smoke by the wall. I didn't move any cardboard boxes..."

"Smoking?" Wang Shuai stepped forward, his sharp gaze fixed on Li Wei. "The logistics park rules prohibit smoking in the warehouse area during working hours, and you were pushing a handcart to the wall to smoke? What exactly was in that handcart? If you tell the truth, we might consider giving you a lighter sentence; if you continue to lie, you know the consequences!" (End of Chapter)