The Siren Restarts, It's Ten Thousand Eternal Nights of the Galaxy

A Novel About Veterans Returning to Their Localities to Become Police Officers with a High Level of Identity Confidentiality.

The male protagonist is a soldier. Because his loved one was unfortunately killed during a mission, he was discharged and returned to the local area to become a policeman. Then he was arranged to give military training to college students. After the girl fell in love with him, he made people jealous and wanted to take revenge on him. Another time I encountered a bank robbery and asked for the heroine.