The ground floor is made from a combination of cast in-situ concrete and cement blocks, which have been covered in white plaster.
一楼是由现浇混凝土和水泥块组成，已覆盖着白色的石膏。
2
In medieval and Renaissance times, gesso (plaster of Paris mixed with glue) was applied to wood panels, plaster, stone, or canvas to provide the ground for tempera and oil painting.
The facade of this level is covered by a special black plaster so this basement is a hidden foundation for the white house above which optically lets it levitate above the ground.