Black gesso and others used. Washi paper is not used. Painted directly on panel. It is an expression of enlightenment, truth, buddhahood, the entire universe, and peace of mind, as seen in Japanese Zen paintings from ancient times. This work is in the shape of a snake, hence the title Snake Enso. A small amount of Sunago gold leaf has been applied from the center down. It is so fine that you will not be able to see it unless you zoom in. Nihonga" is based on a style of painting that has existed for more than 1,000 years, and uses traditional materials that have been cultivated throughout history. The technique involves painting on Japanese paper, silk, wood, etc., using natural paints such as sumi ink, iwa-enogu (mineral pigments), gofun (gofun), etc., and glue (nikawawa) as an adhesive. Gold and other metal materials (gold leaf, etc.) are also used. Iwa-enogu, made from ores, is a beautiful, sand-like powder. Mizuhigure, made from clay, is a fine, stretchy paint with fine particles. Artificial versions of iwa-enogu and mizuhoshi egur are also made, and are available in a wide variety of colors. Goko, made from shells, is a white pigment with fine particles.