Zhejiang Ancient Books Publishing House recently launched "Both Form and Theory: Birds in Song Paintings" The book takes readers back to thousands of years ago, breaks the barriers between science and art. It provides a microscopic view of the natural history of the Song Dynasty from Song flower and bird paintings.

Among them, specific species can be identified in 88% of them, including 67 species of birds. For example, sparrows are the birds that appear most frequently in Song Dynasty paintings.