The term 'Zen-like small scene with a sunken courtyard illustration' refers to a traditional Japanese art form that depicts a tranquil, small-scale landscape with a sunken courtyard. This type of illustration is often found in Ukiyo-e prints, which were popular in the Edo period. It typically includes elements such as a small pond, stepping stones, stone lanterns, and an array of natural scenery like bamboo, pine trees, or cherry blossoms. These images are known for their minimalist style and emphasis on harmony and simplicity, reflecting Zen Buddhist principles.