Cage of Rules: I Use Criminal Law to Solve the Mystery

Shen Du, a top student in the law school and currently working as a lawyer, accidentally broke into a city with strange rules about "crime and punishment". Every copy here is an unsolved case, and every rule corresponds to a legal article. Others relied on force to get through, but he relied on criminal law to break the situation - "The crime of intentional homicide is established. The rules are rewritten and everyone is out."