A traditional Japanese tea set with the theme of white egrets, usually depicting the scene of white egrets fishing by the water's edge. It embodies the aesthetics of Japanese ink painting and also contains a longing for natural harmony and peaceful living. Designs are often concise and full of artistic conception, outlining the elegant posture of herons with a few strokes, especially the sharp brushstrokes on the head, leaving a deep impression on people. Not only used in daily tea ceremonies, but also often collected and appreciated as art. The creation can be traced back to the Muromachi period, around the 15th to 16th centuries. At that time, artists used delicate brushstrokes and ink colors to create many works with nature as the theme.