Yoon has worked on the series of cosmos flowers(“Natural Amusement”) for several years. The term ‘cosmos’ contains a dual meaning of the universe and a flower. His paintings embrace his childhood memories of strolling along the field of cosmoses with this hometown friends. The cosmos was his juvenile world, innocent love, and universal beauty. A single cosmos flower is a delicacy, but its community is the symbol of vigor, the acme of beauty. The vibrancy of cosmos invigorates our life, and saturates our parched sentiments. It is like the heartwarming embrace of our mother, a poignant nostalgia, and love.