I Grind My Way into Becoming Superman in Mexico

[Gotham Survival Guide--- Gotham is full of danger, with criminals everywhere. The guide can help you avoid hazards and stay away from dangerous criminals.] Lei Lu looked at the System. He understood all that, but he had transmigrated to Mexico. [Criminal detected. Identification suggests the criminal may be Harley Quinn, a dangerous figure in Gotham. For your own safety, Host, leave immediately.] Lei Lu looked at the beautiful criminal who might be Harley Quinn. She was his classmate. His parents had died because of a gang, and he had become a police officer to wipe out gangs. How could someone like that be a criminal? Useless System. [The criminal has exceptional cardiopulmonary capacity. If Host stays beside the criminal for two hours, you can copy the criminal’s cardiopulmonary traits.] Huh? Wait. Cardiopulmonary? Traits?