Paulownia, primarily composed of water, requires careful preparation. It's crucial to slice it thinly as the quality of the product hinges on this. Subsequently, place the sliced paulownia into a kettle for dyeing, followed by natural drying. Skilled craftsmen painstakingly assemble the pieces one by one, considering the expansion of paulownia when pressure is applied at the ends. Japanese paulownia boasts a premium luster.