In this case, the designer tries to reflect a a simple and clear rhythm through the continuity and of lines. At the same time, the two shared spaces of the model area and the negotiation area form an angle between the north and the south. Thanks to the surface of the height, shade, density ,internal and other regular changes, the rhythm of cadence is achieved, which is like music in the prelude, expansion, crescendo, climax, repetition, and rest, sharing people with a sense of exciting melody.