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

Summary

Guan Feng and Huang Li Li, after a hearty breakfast, used smart glasses to locate surveillance cameras to identify an ancient coin linked to Zheng Qian. Upon interrogation, Zheng claimed he found the coin while excavating, intending to sell it for his child's benefit. He revealed selling one to a man named Chen San Er for 3,000 yuan but was cautious about disclosing more. Guan Feng emphasized the importance of returning cultural relics and promised rewards for cooperation. Zheng agreed to help identify Chen San Er. Guan Feng then contacted Chen Yao to investigate this individual without alerting him, recognizing the case's gravity involving cultural relics.

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