Such life experience manifests in the details—common sense knowledge and inconspicuous habits. If you don’t even know how to use the subway or find a hotel near a specific location, how could you plan a murder?

Yin Feng said: “What we know: A is around 18 years old, male, an ordinary person unconnected to criminal organizations, knows Guo Xing, and has lived in big cities. What was their motive for killing Guo Xing? Money, love, or hatred?”

Jing Ping said: “Hatred.” Money and love weren’t viable motives.

Jing Ping had already guessed who it was, his expression turning grim.

You Mingxu felt her heart stir, also having a suspect in mind, but… she felt her heart slowly sink, a heaviness settling in her chest.

Yin Feng continued: “Assuming A is the mastermind—it doesn’t matter if it’s B or C. Though I believe it’s A. Is his personality extreme?”

Xu Mengshan: “Extreme.”

Yin Feng said: “Is his willpower strong, stubborn?”

Xu Mengshan: “Strong and stubborn.”

Yin Feng: “Is he intelligent?”

Xu Mengshan: “Intelligent.” Otherwise, how could he have tracked down Guo Xing and planned this series of events?

Yin Feng: “Did he grow up in a loving, understanding family? Can he fully empathize with others? Does he trust the justice system?”

Xu Mengshan: “No to all.”

Yin Feng: “Does he possess charisma and influence? Can he persuade others?”

Xu Mengshan: “Yes.”

Yin Feng stood up, walked to the blackboard, and wrote with chalk:

Male, around 18, physically healthy, has lived in big cities, ordinary citizen. Harbors extreme hatred toward Guo Xing, who took away something he treasured most. Intelligent, extreme, determined, stubborn. Lacked parental love since childhood, cannot fully empathize with others, distrusts the justice system. Possesses strong charisma and influence, capable of inciting accomplices to commit crimes.

His semi-cursive handwriting was fluid, beautiful, and forceful.

Yin Feng turned to face them, casually tossing his glasses onto the table: “I’ve already reviewed this person’s background and current university records—they match the profile perfectly. I’ve also confirmed that he and two classmates have taken leave recently, with no alibis. Let’s make the arrest.”

—

Yunnan, Kunming High-Speed Rail Station.

The station bustled with surging crowds.

From the exit of a train arriving from Hunan, a large group of passengers poured out.

Among them were three young men, each carrying only backpacks, in their early twenties. However, their faces lacked the lightness typical of youth, all silent. The fairest-skinned one looked around, saw nothing unusual, said something quietly, and headed toward the subway entrance.

The subway would take them directly to their university. They walked hurriedly now, as if just getting on the subway and returning to school would truly end this journey.

However, they wouldn’t get their wish.

They couldn’t even see where the police appeared from. Dealing with inexperienced youths like these was all too easy for the officers.

“Don’t move!”

“Freeze!”

“Hands up!”

The three were pinned against the wall and security scanner conveyor belt, surrounded by over ten officers who kept back the startled crowd taking photos. All three wore expressions of panic and fear, but the fairest one’s face quickly showed determination. He stopped struggling and, under police restraint, closed his eyes.