The story takes place in Jiangcheng City (a fictional southern provincial capital city). The core timeline is from the autumn to winter of 2025. The case traceability spans from 1997 to 2025, spanning 28 years.
The core crime scene is the former site of Renji Hospital - a red brick building built during the Japanese occupation. After liberation, it was converted into a specialized hospital for infectious diseases. It was closed and abandoned in 1998 due to financial problems and anonymous reports (suspected of illegal organ trading).
Its basement retains a complete operating room, morgue and darkroom, making it the core base of the criminal network.
Intention: You can't choose your bloodline, but you can hold the knife in your own hand. Wen Xubai used his craftsmanship to carve into her bones to pursue her father's sins - she proved one thing: what you inherit does not mean what you become. The knife is still the same knife, used to speak for the dead.