He is a trace inspector who can see things that others cannot - the deceased died before their fatal injuries appeared.
Chen Xiao, a mark inspector at the Donghai Municipal Public Security Bureau, codenamed "Zhu Feng". Use the chain of evidence to deal with superpowers until you see a thin silver-gray line at the crime scene that shouldn't exist: the starting point is on the empty third floor, the end point is on the second floor floor, and the middle section passes through a corpse.
This wasn't an accident, it was murder. What the murderer kills is not the person, but the cause and effect itself.
"I can accept uncertainty, but I cannot accept information asymmetry."