Historical issues.

Similarities: They are all scientific works of the Ming Dynasty, which fully reflect the research results in this field, and they are illustrated with pictures and texts, both summarizing the predecessors and the latest achievements at that time.

Differences: Compendium of Materia Medica is a summative pharmaceutical work and a medical masterpiece; The Encyclopedia of Agricultural Administration is not only an agricultural encyclopedia, but also an agricultural work. "Heavenly Creations" is an encyclopedia of arts and crafts in China in the17th century, covering agriculture, handicrafts and other aspects.