Public places are all kinds of places where the public engage in social life.
The public refers to the floating population composed of individuals with different gender, age, occupation, nationality or nationality, different health status and different interpersonal affiliation. Public places refer to all public buildings, places and facilities used by the public for work, study, economy, culture, social interaction, entertainment, sports, visits, medical treatment, health care, rest, tourism and meeting some life needs. Typical public places such as libraries, hospitals and cinemas. Generally speaking, noise and smoking are prohibited in public places.