Monkey and Tortoise 

"Monkey and Tortoise" is a Zen ink painting by Hakuin Ekaku, a prominent Japanese Zen master and artist of the Edo period. This ink painting depicts a monkey riding a tortoise and pointing at the sky. The image is characteristic of Hakuin's style, which features simple lines and washes that capture the essence of his subjects. Hakuin's works are often interpreted as allegorical representations of Zen Buddhist teachings, inviting viewers to contemplate the nature of reality and enlightenment. This piece is likely a depiction of a popular fable about a monkey who wants to fly and uses the tortoise as his means of transport.