Illustrated book

Illustrated book by unknown artist. The image shows an open book with yellowed pages. There are two black line drawings on the pages. The drawing on the left side of the image is a wave-like design with swirling patterns. The drawing on the right side of the image is a cloud-like design with rounded shapes. There are some Chinese characters written in black ink on the page. The characters are written vertically near the top right of the image and horizontally near the bottom left. There are also some faint pencil lines and scribbles on the page.