At the area of Chongqing in China, the interior design of a real estate office reminds the interior of a cave and is inspired by the mountainous area of Nanshan. The real estate office occupies 1600 sq.m. and is located in a valley surrounded by hills. This “mountain influenced” design, gave as a result sloping walls and ceilings, reflecting the exterior surrounding area in the interior decoration. The broader sense of the mountain depicted in the triangular features, according to the designer Ajax Law Ling Kit of One Plus Partnership design firm.