Architecture, Building and Structure Design Handan Zarsion Living Center by FTA Group Handan Zarsion is a living center built on the site of a former oxygen generator factory in Handan, China. The chamfered corners of the building form an urban square that remains open to the street. Residents use the square to chat, play chess, take a walk and walk dogs. A long strip layout follows the narrow shape of the corner site. On the second floor, 18 metal shuttle-shaped louvers are set at regular intervals, each rotated by ten degrees. Sunlight on the louvers creates changing patterns of light and shadow across the facade.