Six Original Sins Obsession

At nine o'clock in the evening, Xu Yifan returned to the municipal criminal investigation detachment where he once worked to complete his resignation. HR handed him a written dismissal document, citing repeated reliance on unscientific clues in case handling, violating criminal investigation standards. Former colleagues deliberately avoided contact, whispering behind his back that he had gone mad. Xu Yifan packed up his desk, which had long displayed a worn 1996 one-yuan coin (a relic from his mother) and a blurry old bus photo (license plate mostly obscured). During packing, a courier delivered an unmarked plain letter, the envelope yellowed, the paper carrying a faint scent of sandalwood prayer beads. Inside was only a black-and-white half-length photo of an old woman and a handwritten address: Qingshan Lane No. 37.