Pusum hand-engraving involves meticulous handwork, exquisite craftsmanship and complicated processes. From wood selection, production, carving, finishing and revision, and finally to high-quality woodblocks, there are more than 30 processes, all of which are done by hand. The carving knives are also particular. Each carver has its own set of special carving knives, usually more than 20.

Pusum hand-engraving has various forms. Not only are there text and pattern carvings, but they are also widely used in the printing of prayer flags.