Introduction from the blue pottery master: All ceramics are painted on the pottery by professional painters. They will first apply a layer of glaze on the pottery, so that the surface of the pottery can adhere to the varying shades of blue. . Painters painted various patterns on these porcelains, which is the most critical step in the entire blue pottery production process, because the pottery structure after the initial firing is loose, and the porous structure on the surface can absorb paint in an instant. It will become waste.