The superimposed backyard belongs to the public area. Public * * area refers to the area outside the exclusive part of the owner, which usually includes community greening, community public fitness and entertainment places, community roads, community ground parking lots, fire stairs, roofs, hallways, elevators, public corridors, property service rooms, power distribution rooms, etc. The public area of the community belongs to the owner, who enjoys the corresponding rights and obligations. For example, the owner has the right to park in the ground parking lot of the community. When the ground of the ground parking lot cracks, the owner should also bear the corresponding maintenance obligations.