The term Zenga refers generally to the ink paintings and calligraphy of Zen masters of China, Korea, and Japan, although it usually refers to works of Edo-period Japan. Painting and calligraphy were an important medium for the transmission of Zen principles, and the art of ink painting was considered a meditative practice. Works of Zenga calligraphy and painting tend to be expressive but minimal and often incorporate sayings or quotations associated with Zen Buddhism.