It is a chair which can gradually change its form. At the beginning, the chair is embedded in the floor. When someone stands on the carpet in front of the chair space, the chair will be triggered and first rotates its back up and forms a floor seat. Then the legs of the chair raise the chair to present us a side-x chair. Finally we want to build a rocking chair with some rocking mechanism underneath. The rocking motion can be controlled by a variety of sensors to achieve some entertaining effects.