The first international publication on a pioneer of Korean Abstract Art Ha Indoo (1930-1989) stands as a pioneering figure in the history of Korean contemporary art. Drawing from traditional Korean aesthetics and Buddhist philosophy, he developed a unique form of geometric, non-formal abstraction that opened new horizons for Korean abstract art. Known for his experimental spirit and distinctive visual language, he left a profound impact on both his peers and subsequent generations. This richly illustrated monograph is the first comprehensive international publication to chronicle Ha Indoo's artistic journey, spanning from his early works in the 1950s to his final creations in the 1980s. Through a wide array of paintings, the volume traces the evolution of his practice while shedding light on the philosophical and aesthetic depth embedded in his work. Featuring rare archival materials, photographs of his studio, and key exhibition highlights, the book offers an intimate glimpse into the artist's creative environment and contemplative process.