Shiki-shi, the painting on decorative cardboard, can be characterized as „haute école” of Sumi-e.
Due to the fact that cardboard is much less absorbent than paper some Sumi-e techniques are from the beginning impossible resp. strongly restricted.
The available space is reduced due to smaller measurements. The same statement as with working on paper must be achieved with substantially fewer strokes. The formats of the cardboards render the composition of the picture more difficult and are a great challenge for the artist.