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

Summary

The summary reveals a complex investigation where Zhang Yuan Sheng confessed to deliberately causing a hazardous incident at Shenfeng Chemical Factory as an act of personal revenge against Fang Tao, who had mistreated his daughter. Police Captain Guan Feng suspects Zhang Yuan Sheng is protecting Zhou Ming and plans to investigate further, believing Zhou Ming might have a hidden connection to Zhang Xiao Qian. The investigation focuses on uncovering the true motivations behind the chemical factory incident and the relationships between the involved parties.

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