Painful Chi A: flat to be such that there is no difference in level and irregularities, that align the surface.
Stuck in the form such that the "painful blood" when superimposed such as a cup or bowl as is.
Yamanaka lacquerware is ground decoration, but Sensuji and thin ground of technology is famous, bore the underlying, become such as height in the vessel of precisely because there is a basic technology that 50 if all 50 the same size you have.
Size φ70 × 70mm