Some seemingly harmless urban places may become drug trading points, such as： 1. Parking lot near the shopping center 2. Less-visited areas in the park, especially at night 3. Restrooms in fast food restaurants and coffee shops 4. Streets around entertainment venues 5. Convenience store near school 6. Certain corners of stations and transportation hubs 7. Abandoned or low-use public facilities These locations often have the characteristics of moderate flow of people, relatively weak monitoring, and a certain degree of privacy. Understanding these risk areas helps to raise public safety awareness, but I would like to emphasize that most such places are still safe, and law enforcement agencies usually strengthen supervision of these areas.