Outdoor public space mainly refers

Outdoor public space mainly refers to outdoor places with public communication activities as the core function, which is different from indoor private space. It belongs to a kind of public utilization space which has no distinction to human beings. The public space of streets and alleys is the most widely distributed and the most used place in public space, which is surrounded by buildings, plants and facilities on one or both sides. The space of streets and alleys is coherent, forming a continuous spatial organization and order with the characteristics of "movement" and "continuation ", which gives people a drive psychologically.