116 square meters of public toilets on the first floor are designed in urban areas. Public toilets, referred to as public toilets, refer to toilets for urban residents and floating population, including toilets attached to public buildings (such as stations, shops, cinemas, exhibition halls, office buildings, etc.). According to the building form, building structure, building grade, space characteristics, flushing method, management method or investment channel, there are many kinds of public toilets