Seventh Floor Echo

Forensic doctor Jiang Li has dissected 327 corpses and his hands have never shaken. Until the girl who fell to her death from the seventeenth floor held a silver button with "VII" engraved on it. Three years ago, my younger sister Jiang You was holding the same one in her hand when she "jumped" off the school rooftop. She chose to believe in "suicide" back then. This time, she won't let go. The clubhouse on the seventh floor, a recording pen, a page of wrongly copied piano music - all clues point to the same abyss. This is the story of a sister seeking justice for her sister, and it is also a chase that allows the dead to speak.