The cracks visible all over the bowl are crackles caused by the sudden change of temperature when the bowl is removed from the kiln and the difference in the degree of contraction between the clay and the glaze. Though trifling in amount, water permeates these crackles, affects the clay over the years, and brings about changes in the color tone. Being highly absorbent, the clay employed in Hagi ware shows marked changes, which are referred to as “nanabake (seven transformations)” and favored as an attractive feature.