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The school beauty was found dead in her dormitory by the dormitory aunt There were unknown scratches on her arms, and the latest one was oozing blood, dripping on the floor. The person responsible for the investigation is Officer Peng Hui of Qingshan District Daqiao Police Station. The principal, the dormitory aunt, the chairman of the student life association, the teacher's wife selling tea eggs, etc. Peng Hui visited an individual related to the case. His investigation seemed trivial and clueless, but the truth behind these incidents gradually emerged.