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

Summary

Summary of the text: A cattle poisoning case in a rural area involves Zhang Hua Feng, whose three cows were poisoned after a failed marriage arrangement with Zhang Chang He's family. Despite initial suspicions, local police investigated and found no evidence linking Zhang Chang He's family to the crime. The investigation is ongoing, with Guan Feng and his team examining the case closely. The primary challenges include limited rural surveillance and difficulty tracking the origin of the poison used. The incident stems from a dispute over a bride price and subsequent marriage cancellation, leaving both families with significant resentment.

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