Varnish workshop introduction: Varnish workshop is the workshop of Mr. Shin Joong-hyun in the lacquer craft field No. 1, Seoul City Intangible Cultural Heritage. Raw lacquer is a kind of lacquer that is made by filtering the gum collected from lacquer trees with linen cloth to remove impurities, adding rosin, and filtering it again with silk cotton and linen cloth. After glue coating, the strength of the container will be improved, it will not discolor after long-term use, and it also has the effect of inhibiting the reproduction of microorganisms.