The area of this case is 73 square meters, the space is narrow and long, and the height is low. The doors of master bedroom, kitchen, display cabinet and second bedroom are located on the same side, forming a plane. The entryway, the island kitchen and the living room are on the other plane, forming two large rectangular and parallel spaces. How to rectify the moving line into the public and private areas, and deal with the narrow and long layout and the spatial sense of insufficient height, has become the core of the case.