A pioneer of the Japanese Mono-ha (School of Things) movement, Lee Ufan arranges his installations and sculptures to emphasize the equal relationship between the artwork, the viewer, and the space, a philosophy best illustrated by his "Relatum" series, a series of stretched canvases on the floor, each topped by a single stone. Ufan uses materials including glass, steel, rubber, and stones in shades that are usually subdued and often monochromatic. His paintings exhibit a similar logic, applying muted color on a light, plain background in a style reminiscent of East Asian calligraphy, whereby the brush stroke fades as it ends.