I, King of Criminal Investigation, Solving the Rainy Night Serial Murders from the Beginning.

Summary

In the surveillance room, Guan Feng and Huang Li Li review video footage of a potential suspect, Wang Lian Fei. They identify his movements and plan to trace a van's license plate. During this process, they meet Tan Kai, a dedicated police officer who has meticulously studied Guan Feng's lecture videos. Impressed by Tan Kai's microexpression analysis skills, Guan Feng offers him an opportunity to participate in a city-level assessment and potentially transfer to the major case squad, recognizing his hidden talent and potential.

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