Although architecture exists in objective time and space in the form of entities, the content of architecture is transformed into imagination and perception because of the existence of people, redefining reality in an abstract form.

Buildings can not only meet basic functions and needs but also transmit information. The cultural context of each civilization can find clues in their buildings, which serve as the medium of the information and culture of the times. Although buildings exist in the form of an entity in the objective space and time, the content of buildings can be transferred to imagination and perception because of the existence of people, which redefines reality in an abstract form. Buildings involve people’s understanding of space and their sense of space. In order to survive and multiply, human beings have delineated a field completely belonging to themselves in the original flexible nature. The building “wall” divides space to create a safe and comfortable living space. Buildings allow people to isolate themselves from darkness, danger, and uncertainty, so safety and comfort are people’s basic demands in buildings. In the meantime, buildings can be homes that are built with walls and provide warm spiritual needs.