The technique “red underglaze” originated in Jingdezhen in the Yuan dynasty. The copper pigment is painted on the surface of the biscuit porcelain which was to be covered by a layer of enamel when fired. The pear-shaped vase has a mouth opening outward, neck curving inward, slippery shoulder, drooping belly, flat base and ringfoot. Its surface is painted with seven layers of copper-redunderglazed patterns: banana leafs, curling grass, sea water, upside-down ruyi's heads, peony meander, twisted lotus petals, and curling grass again. The shape is elegant, the glaze is glossy, the brown slightly diffuses and surfaces to the copper red that is not fully developed, the peonies meander free and natural. This is a typical work from the official kiln in the Hongwu reign of the Ming dynasty.