Interior Space and Exhibition Design Yangguang City No.9 Residential House by Saiwen Liu Yangguang City No.9 is a residential interior design located in Xi'an, China, with a total area of 501 square metres. The layout is organised to support efficient movement between functions within a compact floor plan. Curved wall shapes and embedded light strips recall the tail feathers of the phoenix, a bird of Chinese mythology, and add depth to the rooms. Natural shell terrazzo and common red bricks lower material cost and help balance indoor humidity in a dry climate. Two side tables are made from a saw blade and from off-cut wood.