Final answer:
The 'Moonlit Bamboo Forest' is comprised of three volumes, designed to effectively convey its comprehensive material.
Step-by-step explanation:
The book Moonlit Bamboo Forest is offered in three volumes. This is mentioned to provide flexibility and efficiency due to the comprehensive nature of the material. Works such as Night Rain at the Double-Shelf Stand, which depict scenes from historical art pieces, require multiple volumes to cover the content adequately. Similarly, the Ten Bamboo collection of Calligraphy and Painting is extensive enough that it spans across multiple volumes, specifically volume 5 and 6 for bird-related content.