You went on a blind date and presented an A-level wanted criminal as a meeting gift?

The vault on the top floor of the Hongyuan Building.

The air was still filled with a faint smell of blood mixed with the odor of disinfectant.

Lin Chen stood in the center of the secret room, surrounded by Jiangcheng City Police Department's top trace evidence experts and criminal investigation backbone.

A dozen pairs of eyes, filled with suspicion, confusion, and even a hint of hostility, were focused on him.

That figure, exactly like Lin Chen, and that unique miniature tweezers, weighed heavily on everyone's mind.

They respected Lin Chen's abilities, but the evidence was too "ironclad".

Li Mingyu followed behind, emboldened by the number of people, and hid behind an old criminal police officer, whispering to himself.

"Pretending to be something he's not, let's see how he explains this time..."

Lin Chen seemed not to hear or see those complicated gazes.

He didn't even bend down to look at Wang Hongyuan's body.

Prajna's scheme was both brilliant and foolish.

The brilliance lies in his use of Lin Chen's two most unique traits—his inimitable gait and his one-of-a-kind hand tools—to create perfect directional evidence.

His folly lay in his overconfidence in his own cleverness, while underestimating what Lin Chen truly relied on for survival.

That wasn't hand-to-hand combat, firearms, or even those seemingly magical hacking techniques.

It is knowledge.

It was the God-like perspective that he gained, capable of seeing through the essence of all things, granted by his mastery of both God-level physics and God-level architecture.

Lin Chen's gaze slowly swept across the four walls of the vault, finally stopping at the narrow, welded-together central air conditioning vent directly above the ceiling.

Then he glanced again at the heavy, composite door that was locked from the inside.

A barely perceptible sneer curled at the corner of his mouth.

"Captain Li,"

He suddenly spoke, his voice not loud, but clearly reaching everyone's ears.

"How do you think the killer vanished from this tin can after locking the door?"

When his name was called, Li Mingyu jumped up and peeked out from behind the crowd, stammering as he answered.

"Then...that goes without saying! They must have used some high-tech gadgets we don't know about! Like...like teleportation or something!"

As soon as he said that, several young police officers around him showed expressions of wanting to laugh but not daring to.

Lin Chen looked at him like he was an idiot.

"Captain Li, your imagination is perfect for writing science fiction novels, but not for staying in the criminal investigation team."

"This is the clumsiest, yet most classic, architectural time difference trick I've ever seen."

Lin Chen walked to the area directly below the air vent, stretched out his finger, and tapped on the steel plate on the ceiling.

"Thump, thump".

A dull thud echoed in the vault.

"The murderer never even entered this vault."

One sentence caused an uproar in the entire room!

"impossible!"

A trace evidence expert immediately refuted this.

"The door was locked from the inside! The fatal wounds on the victim's body also prove that the murderer was right in front of him!"

Lin Chen ignored him and instead pointed to the welded-on ventilation grille.

"You only see this grille, but you haven't considered what's inside the ventilation ducts on top of it."

He activated the perspective of "God-level Architectural Mastery," and the entire pipeline system of the Hongyuan Building transformed into a transparent 3D blueprint in his mind.

"The central air conditioning system of Hongyuan Building adopts a fully enclosed negative pressure circulation design."

"To ensure absolutely clean air in the top-floor VIP area, the main exhaust fan is three times more powerful than that of a typical commercial building."

"When the system is turned on to its maximum, a negative pressure of nearly 0.8 atmospheres will be generated inside this 60-centimeter-diameter main ventilation duct."

Lin Chen's voice was calm and clear, like a university professor giving a basic physics lecture.

"Before the crime, all the killer needed to do was sneak onto the roof of the building and open the access port of this main ventilation duct."

"Then, he placed a large enough piece of dry ice in the pipe directly above the vault."

"The surface temperature of dry ice is -78.5 degrees Celsius."

"He used an extremely thin, almost invisible tungsten steel wire to connect an ice skate made of high-density pure water, and suspended the ice skate below the dry ice, just above the ventilation grille."

"Then, he informed Wang Hongyuan to enter the vault himself and lock it from the inside, waiting for the so-called 'secret transaction'."

"Wang Hongyuan walked into the vault and stood in the designated position, which was directly below the ventilation opening."

"At this time, the dry ice in the ventilation duct is continuously sublimating and shrinking in volume."

"When the dry ice becomes too small to support the weight of the ice skates..."

Lin Chen made a downward chopping motion with his fingers in the air.

"The ice skate broke off, accelerated by gravity, passed through the gaps in the grille, and precisely pierced Wang Hongyuan's carotid artery. That was the fatal wound."

"After Wang Hongyuan fell to the ground, the murderer remotely activated the central air conditioning system's high-power ventilation mode from the rooftop."

"A powerful negative pressure is instantly applied throughout the entire pipe."

"The thin tungsten steel wire, along with the melting ice blade handle, was pulled back into the ventilation duct with a 'whoosh' by this powerful suction, and then retrieved from the maintenance opening on the roof."

"The ice skate melted rapidly at Wang Hongyuan's body temperature and room temperature, leaving only a puddle of water and a part of the shards stuck in his body."

"The murder weapon has disappeared."

"The tungsten wire has disappeared."

"Throughout the entire murder process, the killer never stepped into the vault."

"And this door was locked from the inside by the deceased, Wang Hongyuan."

three minutes.

Lin Chen dissected the seemingly flawless "perfect secret room" in just three minutes.

The entire vault was so quiet you could hear a pin drop.

All the police officers, including the forensic expert who had initially objected, gaped, their faces filled with realization and disbelief.

So that's how it is!

This method sounds complicated, but every step is based on the most basic principles of physics and architecture. It is simple, crude, yet extremely effective!

"As for the tweezers,"

Lin Chen's gaze shifted to Li Mingyu, whose face had turned a deep purplish-red.

"It's nothing more than a clumsy tool that Prajna's henchmen dug out of the trash I threw away and then threw down through the ventilation duct to frame me."

"Would a truly skilled killer leave behind such superfluous, suggestive evidence?"

Lin Chen's last question was like a resounding slap in the face to everyone who had just harbored doubts.

Li Mingyu stood there, so ashamed he wished he could disappear into the ground.

He felt all the blood rush to his face, so hot that he almost fainted.

His prized "ironclad evidence" proved as fragile as a thin sheet of paper in front of Lin Chen.

No, it's not even as good as window paper.

That toilet paper was practically screaming "I'm an idiot!"