In Song-dynasty China, the brush, inkstone, paper, and ink were referred to as the "four treasures of the scholar's study," and such writing materials became increasingly the subject of appreciation. Influenced by that Chinese trend, in the mid to late Edo period, it became fashionable among people of literary inclinations to display arrangements of scholar's accoutrements (bunbō kazari) at the tea ceremony. This set of glass objects for the writing desk much have appealed to such refined sensibilities. It includes seven necessities for calligraphy: a screen to keep dust out of the inkstone, a brushpot, an ink holder for the ink (after it has been ground from the inkstone and mixed with water), a brush rest, a brush washer to rinse out its tip, and scroll weights and paperweights to hold the paper in place.