The Mystery of Donglin University's Corpse Case

Half of the bloody finger bones were floating in the toilet of Dormitory 403 of Donglin University. When the Tianhai City Criminal Police Team's searchlight pierced the night, Lin Chen squatted at the base of the wall, staring at the dark brown traces that had been wiped repeatedly in the corner - that was not water, but diluted human blood. "Classmate Liu, did you say that the door and window of the dormitory were locked when the body was found?" He turned to look at Liu Xiaojing, who was shivering in the police car. "But the mud mark on the edge of the window clearly showed that someone had dug it out after two o'clock in the morning." Deputy Director Sun patted him on the shoulder to smooth things over: "Comrade, how can the person who reported the crime be the murderer?" Lin Chen pinched the broken hair that was pulled out from under the bed - there was half a piece of blue nail polish stained at the root of the hair, which was exactly the same as the manicure Liu Xiaojing had just done.