Last night, Lu Chuan took the night off, but the rest of the team didn't.

The investigation is still ongoing. Liu Guodong and the others only got home after twelve o' clock.

Liu Guodong took a cup of tea, paused, and shook his head with a heavy expression: "Still no major breakthroughs."

Lu Chuan nodded. If there had been progress, they wouldn't have heard Qin Yong's roaring from upstairs earlier.

Yang Sen yawned, clearly not having rested well last night: "Old Ren called this morning, asking us to help investigate a missing case Song Kun was following before he died."

"Are we going now?"

Liu Guodong wasn't surprised. Lately, the crime scene investigation office has been out on the field every day.

It's been years since a situation like this happened.

However, this case has too much internal impact, and the orders from above are to solve it at any cost.

Of course, resources are always limited, and the Criminal Investigation Team can't invest all future resources into this one case.

After all, with such a large population in Haizhou City, major cases occur every day.

But for now, they've been temporarily set aside.

All resources and manpower have been directed towards Song Kun's case.

However, this situation can't last too long; typically, a week is the limit.

Ordinary homicide cases at most have a task force, but Song Kun's case, due to his special identity and large impact, has this level of attention.

Yang Sen nodded: "We'll head out at eleven, and we'll split into two groups again."

Liu Guodong nodded, put down his enamel cup, checked the time, and got ready to set off.

"The last case Song Kun was following before he died was Gao Sheng's missing case," Zhang Hui began to brief Liu Guodong and Lu Chuan on the case in the car: "The High-tech Zone Criminal Investigation Team collected fingerprints from his electric vehicle, and the analysis and identification were done by Lu Chuan."

Lu Chuan nodded. He remembered the case, matching information for a total of twenty-five people, and Yuan Shaokang personally came to get the materials.

"We'll divide the work, Brother Liu, you and Lu Chuan will investigate these two people today, and I'll check the other two. We'll contact each other by phone once we're done."

For investigation visits, regulations require pairs to cooperate.

But given the current situation, with everyone from the crime scene investigation office out on the front line, Zhang Hui, as a frontline detective, had to conduct visits alone.

Lu Chuan, however, could team up with Liu Guodong.

Taking the files handed over by Zhang Hui, Lu Chuan flipped them open for a look.

Xinyuan Electric Vehicle Repair, Sun Zhengfei.

Qingsong Medical Examination Center, Wang Manli.

Lu Chuan vaguely remembered these two names; they were targets he had originally matched fingerprints for.

"These two places are relatively close. Let's call you when we're done."

"Sounds good."

The car stopped about a hundred meters from the Xinyuan Electric Vehicle Repair shop, and Liu Guodong pointed to the sign of the Qingsong Medical Examination Center in front, letting Zhang Hui leave first.

"Boss, do you happen to sell second-hand electric vehicles here?"

Although Liu Guodong has been doing crime scene investigations for ten years, his original vocation was as a frontline detective.

He had no trouble subtly extracting more information during interviews and knowing how to interact with people.

"Yes, yes, yes!"

Inside the repair shop, a young man buried in a pile of parts looked up, revealing a big white smile: "What price range are you two looking for?"

"Our shop offers lifetime free maintenance for second-hand electric vehicles. If anything breaks, just come straight to me. I'll waive all labor fees except for parts."

"Around a thousand yuan; we're looking to buy two."

Liu Guodong grinned: "What's your surname, Boss?"

"No need for formalities, it's Sun. You can just call me Sun."

The young man was talkative, with a friendly smile.

Lu Chuan's bag only carried basic information like name, ID number, phone number, and address for the other party, but no photo.

Which is why Liu Guodong needed to verify the identity.

"Boss Sun, can you show us the bikes?"

"Sure, sure, they're in the back. Follow me."

Throughout the entire process, Liu Guodong didn't ask a single question about Gao Sheng's disappearance.

Lu Chuan naturally remained silent, treating this as a valuable learning opportunity. After observing for a while, Liu Guodong suddenly pointed to a vehicle among a row of electric bikes and asked: "Boss, how much for this one?"

"This? It's a 90% new model, a high-end Yadi model, with a minimum price of 2,400 yuan."

"2,400 yuan?"

"That's a bit steep, Boss Sun. We were referred by a friend who bought a bike here for 1,700 yuan."

"1,700 yuan? Impossible."

Sun Zhengfei quickly waved his hands: "I couldn't even offer that price... Who are you referring to? I only have this one model and have never sold it before."

"Impossible!"

Liu Guodong shook his head, taking out his phone: "Look, this electric vehicle was bought by someone named Gao Sheng from your shop. He referred me here."

After mentioning Gao Sheng's name, Liu Guodong closely observed Sun Zhengfei for any change in expression.

Taking the phone, confusion appeared on Sun Zhengfei's face: "Boss, you must be mistaken. I've never heard of anyone named Gao Sheng."

"This vehicle... definitely wasn't sold by me."

"I've only ever had this one high-end Yadi model, and never sold another."

"That's impossible, Gao Sheng told me..."

Liu Guodong handed over his phone with a photo of the electric vehicle Gao Sheng was riding when he disappeared to Sun Zhengfei: "Take another look, it's this electric vehicle."

Sun Zhengfei took the phone and examined it closely: "Ah!"

"Boss, this bike wasn't sold by us, but... the handle grips are from our shop. The Gao Sheng you mentioned likely bought the handle grips from us."

"Oh, okay then," Liu Guodong retrieved his phone and glanced at the high-end Yadi electric vehicle: "1,700 yuan really can't be negotiated?"

Sun Zhengfei shook his head firmly like a rattle: "Boss, the lowest I can go is 2,150 yuan; any less and I'd lose money. Remember, this comes with lifetime warranty."

"... We'll take another look, maybe."

Leaving Xinyuan Electric Vehicle Repair, Lu Chuan gave Liu Guodong a big thumbs-up: "Master, well done."

Liu Guodong slightly floated: "This is nothing, if I hadn't switched to crime scene investigations, I'd at least be a task force leader by now."

Lu Chuan nodded heavily: "You're already the head of crime scene investigations, ranking higher than the task force."

The result of the investigation on Sun Zhengfei was evidently not problematic.

During Liu Guodong's conversation with Sun Zhengfei, the other party's expression was genuine, with no special reaction to Gao Sheng's name.

He also confirmed that the handle grips were purchased from his shop.

Which means the fingerprints on the electric vehicle likely belonged to Sun Zhengfei, left while changing the grips.

After leaving the repair shop, the two headed directly for the Qingsong Medical Examination Center a few hundred meters away.

Wang Manli, female, 27 years old, a nurse in the blood test department at Qingsong Medical Examination Center.

This time, Liu Guodong didn't use private methods but directly displayed his credentials at the front desk.

"We're from the City Bureau's Criminal Investigation Team and need your cooperation for some work."

Different approaches are required for different people.

Evidently, Liu Guodong could only investigate the nurses at a medical center through official channels.

Soon, the person in charge of the medical center came rushing down: "Officer, whatever you need, our center will fully cooperate."

It's rare for a unit not to cooperate with a criminal investigation inquiry.

"Hello, we'd like to meet your medical center's nurse, Ms. Wang Manli."

"Is... there an issue?"

Liu Guodong shook his head: "No, no, just a couple of questions to verify."

"Alright, no problem, please wait in the reception room, I'll bring her over."

Private medical centers generally have complete facilities and excellent service.

In the reception room, the receptionist specifically brought coffee for the two.

Five minutes later, there was a knock on the door: "Officer Liu, this is Nurse Wang Manli."

A tall woman appeared behind the person in charge, causing Lu Chuan to start slightly.

It was her?

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