Final Chapter of the Extraordinary Records of the Civil Investigation Bureau.

Summary

In the dining car, a complex investigation unfolds regarding a poisoning incident targeting Si Ma Xiao Liang. An attendant attempted to poison Bai Wu Qiu using bitter tongue seeds hidden in his clothing. Si Ma Xiao Liang and Sun De Sheng uncover the plot, with the attendant ultimately committing suicide to prevent further questioning. The Civil Investigation Bureau handles the situation, preventing potential conflicts and protecting Si Ma Xiao Liang's group. Sun De Sheng decides to keep the train ride calm and calls authorities to handle the corpse at the next stop.

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