Anti-narcotics policeman
-Xu Chiyan: Holding the drug-hunting knife and breaking through the darkness
-Xu Mingyi: Hold the surgical knife and save the common people
-Xu Chiyan: Captain of the city's anti-drug detachment, cold, stern, undercover background, licking blood from his knife edge
- Xu Mingyi: Attending the Emergency Department of the Central Hospital, calm, steady, and used to seeing life and death trauma
Concept: modern suspense / criminal investigation / two male protagonists / strong / cold feeling in winter