What are the advantages of circular structure?

Circle is a closed and integral basic shape, and circular composition usually means that the subject in the picture is round. The circular composition gives people the aesthetic feeling of rotation, movement and contraction visually ... In the circular composition, if there is an interesting point focused on the line of sight, then the whole picture will take this point as the axis and produce a strong centripetal force. ...

O-shaped composition, also known as circular composition, is the visual center formed by arranging the subjects on the center of the circle. A circular composition can be composed of an outer circle and an inner circle. The outer ring is a natural solid structure, the inner ring is a hollow structure such as pipes and steel pipes, and the outer ring is a composition on the shape of a solid circular object, which is mainly used. ...