Mother-child space is a small empty space (subspace) redefined by entity or symbol in the original space (mother space). This practice is similar to the "building in a building" and "house in a house" in traditional buildings in China, which can not only meet the functional requirements, but also enrich the spatial level.

Many subspaces (such as an enclosed office space in a large space, or a small box seat separated from a large restaurant) often form a repetitive rhythm because of their regular arrangement. They have a certain sense of domain and privacy, and have considerable communication with the big space. They are a kind of space type that takes quiet in the noise, which well meets the needs of groups and individuals to get along well in a large space.

Spatial characteristics

By dividing the large space into different communities, privacy and privacy are enhanced and people's psychological needs are better met. This kind of space treatment with individuality, which emphasizes commonness, and the unity of mind (person) and things (space) are the progress of public building design.

Because the maternal and child space has a certain sense of domain and privacy, and the large space is interconnected, it better meets the needs of material groups and individuals.