Page from the Ten Bamboo Studio Manual of Painting and Calligraphy

A page from a book, with a drawing of a piece of wood with a natural hole in it. The wood has a rough, bumpy surface and appears to be twisted and turned. The drawing is in shades of gray, with darker shading on the left side and lighter on the right. A small red square with Chinese characters is in the bottom-right corner of the page. A small piece of wood is drawn in front of the large piece. The background of the page is off-white.