Noon.

Criminal Investigation Team, Conference Room No. 1.

"Brother Qiang, we have a lead!"

Zhang Hui, emotionally high and visibly excited, said, "Tian Zhongfa did indeed have a dispute with the Wang Family."

"It all started five years ago..."

Zhang Hui summarized and analyzed the information he had gathered.

"Five years ago, the vineyard in Beitun Village was re-divided into contracted plots. Due to the operational farming, the vineyard between the Wang Family and the Tian Family gained an extra half ridge."

"The two families quarreled over this half ridge, and Tian Zhongfa got into a fight with Wang Zihan's father, Wang Chengshun."

"The village party secretary mediated, and Wang Chengshun compensated Tian Zhongfa with two thousand yuan for medical expenses."

"However, the dispute over the half ridge remained unresolved. The two families took turns farming it, one year each."

"Last year, after the Wang Family farmed it, they did not return it to Tian Zhongfa this year."

"Although their relationship looked fine on the surface, in reality, it was almost hostile."

"Moreover, Tian Zhongfa's house is at the west end of the village, so if he grabbed Wang Zihan, he could go directly home without being easily noticed by others in the village."

"Additionally, neighbors mentioned that Tian Zhongfa used to wear an old blue work uniform but switched to new clothes three days ago, the day after the child disappeared."

With these few clues: the clothes and neighborhood disputes, Tian Zhongfa's suspicion increased significantly.

"Brother Qiang, should we arrest him?"

"Why hesitate, arrest him!"

Interrogation Room.

Tian Zhongfa, wearing a brand-new blue work uniform, sat silently in the interrogation chair.

"Tian Zhongfa, do you recognize this clothing?"

After arresting Tian Zhongfa, Zhang Hui conducted a thorough search of Tian Zhongfa's home.

In the locked side room of Tian Zhongfa's wife, they found a red scarf.

In the bedroom cabinet, they uncovered an old blue work uniform.

Upon close examination, hair and skin flakes were found on it.

Lu Chuan was conducting DNA analysis. If the hair and skin flakes belonged to Wang Zihan, it would confirm Tian Zhongfa as the murderer.

Not to mention the red scarf found in the side room.

"Tian Zhongfa, the red scarf found in your side room is undergoing inspection, and hair and skin flakes were discovered on the old clothing you changed out of."

"I hope you confess before the results come out. It would still be considered a voluntary confession."

"Even if you say nothing now, once we have the results, you'll be convicted just the same!"

"I... I'll talk..."

Tian Zhongfa, hands trembling, started to confess in a choked voice, "That day... I did take the kid."

"But... killing him was an accident..."

Faced with police questioning, under the spotlight, Tian Zhongfa, a farmer, couldn't hold up for long.

Before long, he confessed everything.

It turns out, Tian Zhongfa kidnapped Wang Zihan to pressure the Wang Family into returning the half ridge to him.

"That land was originally ours, but Wang Chengshun's wife insisted on taking it over. After the village secretary mediated that year, I thought to compromise."

"We took turns farming it each year, but after the Wang Family finished last year, when tilling this year, they buried the grape trellis again..."

"I never meant to kill the kid, just to scare them... boohoo..."

"I watched that kid grow up too..."

"Then how did the kid end up dead?"

"It was... it was... my wife..."

"That day, after grabbing Wang Zihan, I tied him up, gagged him, and locked him in our side room. To prevent discovery, I left to work."

"But unexpectedly, when I returned in the afternoon, the child was dead, with half an ear bitten off by my wife..."

"I swear it wasn't intentional. I rushed out in the morning and didn't feed her..."

"What about the body disposal?"

"That night, I disposed of the body, throwing it into Well No. 3..."

The interrogation hadn't concluded when Lu Chuan's analysis results came in.

Bloodstains were found on the red scarf, consistent with blood type from Wang Zihan after his ear was bitten.

The worn blue work uniform found in Tian Zhongfa's cabinet had frayed edges at the cuff, with fine threads scattered, likely from the cuff's remnants.

The skin flakes found were from Tian Zhongfa, his wife, and Wang Zihan.

"Ding!"

"Intermediate Task Complete: The host and colleagues cooperatively identified the primary crime scene, discovered key clues to narrow down the suspects, and successfully helped the task force identify the suspect through fiber analysis."

"System Reward: Forensic Entomology Intermediate Skill Card, please select the skill type."

Forensic Entomology?

While chatting with Shen Yan, Lu Chuan had heard her mention this forensic subfield.

It's a rarely researched area even within forensic science.

Forensic Entomology is an interdisciplinary subject, mainly used to judge and analyze the time, cause, and location of death based on the growth of carrion-feeding flies, beetles, and other insects found on bodies.

The system's Forensic Entomology directory includes even more detailed abilities.

For instance, among intermediate abilities, there's an Intermediate Calliphoridae Breeding Skill Card, an Intermediate Lucilia Identification and Analysis Skill Card.

There's also an Intermediate Diptera Larvae Growth Identification and Analysis Skill Card, an Intermediate Dermestes Pattern Analysis Skill Card, etc.

In forensic practice, analyzing insects or insect eggs parasitizing on bodies can provide forensic scientists with a wealth of information.

Especially on highly decomposed bodies, where much surface evidence is missing, analyzing body parasites can equip detectives with more clues to solve cases.

With numerous skills available, Lu Chuan needed to carefully choose.

Choosing a skill to breed carrion flies would be quite a loss.

Finally, Lu Chuan decided on the Intermediate Body Insect Egg Identification and Analysis Skill Card.

The Intermediate Body Insect Egg Identification and Analysis skill can precisely identify the type and growth stage of insect eggs parasitizing bodies.

The odor produced after death attracts many insects.

These include flies, beetles, hornets, butterflies, or moths. Among these, flies are usually the first to be attracted to the body.

Specifically, the blowfly and sarcophagid fly can locate the body and lay eggs within minutes of a murder.

The most critical role of forensic entomology, used most frequently in practice, is determining the postmortem interval.

This is generally achieved by collecting and incubating insect eggs from the body.

Every type of insect egg has a fixed incubation period under different environmental conditions.

By simulating the environmental temperature and humidity of the crime scene to incubate the eggs, the exact time the insects laid eggs on the corpse can be determined.

By calculating the difference between the standard incubation time of the insect eggs and the actual hatch time, the exact postmortem interval can be obtained.

Lu Chuan's Intermediate Body Insect Egg Identification and Analysis skill can directly determine the type and growth stage of insect eggs, equivalent to identifying their growth time.

This is of significant importance for determining the time of death.

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