Interior Space and Exhibition Design Mountain Mansion Sales Center by Panshi Design Mountain Mansion is a sales center interior covering 1085 square meters. The design is inspired by descriptions of mountain residences written by ancient scholars. Modern curves and lines are combined with geometric shapes throughout the space. Part of the original floor is raised, and stairs mark the change in level. The open layout and freely arranged furniture allow community events, theme sharing and product presentations. Materials include stone, wood finish, metal, wire glass, acrylic and film free of heavy metals and volatile organic solvents.