A curved, wave-like line divides this large, rectangular tray into symmetrical sections. Matsuzaki carved one half of the tray more deeply, with chisel marks visible below a thick layer of dark black lacquer. In contrast, the second section, in relief, was diligently etched and polished to produce a moiré pattern that Matsuzaki coated with a layer of smooth, clear lacquer. The division of light and dark call to mind themes of interdependence and the balance of Yin and Yang.