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

Summary

Zheng Yuan Dong is alarmed by a phone call about human organ trafficking, a rare occurrence in Hua An. He reports to Director Bai, who confirms the case's complexity and scope has exceeded local jurisdiction. The investigation reveals a major cross-provincial criminal gang involved. Zheng assures his team that their efforts will be recognized, while Guan Feng grapples with the case's enormity. Amidst the chaos, Guan Feng shares a light moment with Huang Li Li about car repairs, then goes on a dinner date with Wang Ya Yue, discovering she's Huang Li Li's sister. Their conversation reveals mutual respect and admiration for Guan Feng's leadership and past actions in the field.

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