The story revolves around the "Hundred Years of Nine Coffins to Suppress Evil" - in the late Qing Dynasty, Feng Shui masters used nine resentful corpses as coffins to suppress the "Eye of Yellow Spring" underground in the city, and divided them into nine Feng Shui nodes in the city, each corresponding to a "coffin suppressor". If the Nine Coffins are broken, the Eye of Underworld will awaken and swallow the entire city. The elevator in this volume is the "first coffin" node, and the "blue birthmark" on the neck of the girl in red is a faint mark of the Eye of Underworld. Each subsequent volume will gradually reveal key clues such as "coffin nails" and "coffin-suppressing device".
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