The architect hoped to make a reading paradise over the “clouds”, and it should have a light and streamlined free space, but in order to follow the restrictions of fire codes, the architect had to challenge the traditional types and materials of the bookshelf. For the first time, we used 5mm thick steel plates to customize curved bookshelves. After precise structural calculations, the steel frame that is hidden behind the foundation is used as the support of the structure. The over 3,000 meters-long steel plated bookshelf floats in the air as a cantilevered structure.