In order to investigate the case, Xu Younian went there and worked as an undercover agent. However, the criminal gang was not arrested, but Xu Younian, who was the undercover agent, died...
Was it an accident or homicide?
All the evidence points to suicide, so did he really commit suicide?
"Didn't he die of AIDS?"
"Here is a letter. He committed suicide."
I am Gu An, follow me to explore the truth of the case!
Purpose: Don't be fooled by appearances