Interior Space and Exhibition Design Yango Ji'an Wenlan Mansion Sales Center by Ac Design Yango Ji'an Wenlan Mansion is a sales center converted from a row of street shops. The interior covers 200 square meters and is arranged to receive a large flow of visitors. The layout is inspired by the fluid square plan of the Diamond House, and curved lines are used as three-dimensional surfaces to soften the straight edges of the narrow original space. A long corridor screens most of the interior views. Materials are kept simple and include plain wallpaper, copper skirting, gray marble and brushed gold metal panels, layered and separated by facade LED lighting.