In cities, seemingly innocuous places can indeed be hidden places for drug transactions. Here are some common examples: 1. **Parks and playgrounds**: These places usually have a lot of people, but because of the open environment, transactions can be easily concealed, especially during closed hours. 2. **Cafés and restaurants**: People gather and socialize here, and can accommodate normal activities to conduct secret transactions. 3. **Subway stations or bus stations**: Transportation hubs are often crowded, and transactions can be easily and quickly carried out and quickly left. 4. **Dormitories or campuses**: Places where students gather may be places where people may take advantage of lower vigilance to conduct drug transactions. 5. **Unmanned buildings and garages**: These places are more hidden and provide privacy for transactions. 6. **Convenience store and supermarket parking lots**: People often stay here for a short time, making transactions more difficult to notice. 7. **Community activity centers**: Some activities can easily make people relax their vigilance, making them potential transaction venues. Potential drug transaction venues often take advantage of people's daily activities and social occasions, and appear to be more hidden. However, community vigilance and timely reporting are still important means to prevent and combat drug transactions.