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

Summary

Summary of the text: A mass food poisoning incident involving contaminated beef is investigated by Captain Guan Feng. The restaurant manager Zhang Tao purchased beef at an unusually low price from a meat vendor, Zhang Yong Sheng, who received the cattle from villagers claiming the animals were accidentally electrocuted. Laboratory tests revealed rat poison components in the beef. The investigation focuses on tracing the source of the poisoned meat and identifying how it entered the food supply chain, with over a hundred people already affected by the poisoning.

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