Create a black and white watercolor illustration that captures the essence of the traditional buddhist tale of the two monks and the river. the scene should depict an older monk carrying a young woman on his shoulders, with the river flowing beneath them. in the background, the younger monk should be watching intently, his expression a mix of surprise and contemplation. the setting should be serene, representing a timeless landscape with the river as the central element. the water's flow should symbolize the passage of time and the transient nature of moments. the older monk's calm demeanor should contrast with the younger monk's evident internal struggle, highlighting the story's theme of living in the present and letting go of attachments. the overall tone of the illustration should evoke introspection, serenity, and the profound lessons of the tale.