Woodcarving: fine-grained pear wood, jujube wood, boxwood, etc. Used as a plate, pictures and texts are depicted on the plate or painted on thin paper and pasted on the page for carving. Before the popularization of photographic plate making, books and illustrations were all carved on the section of boxwood, which was called "boxwood block".
Stone engraving plate: mainly carved on the stone with tools, with clear printing effect and delicate carving; The sound quality is clear, the texture is delicate and the description is delicate.