Plum green glaze is a glaze of Longquan Celadon, first burning in the Southern Song dynasty. Its thick green glaze eijun, like Plum color, hence the name plum green. Plum fired green-glazed porcelain whiteness requires high. Easy flow of lime glaze used in high temperature alkali glazes in order to glaze several times to increase the thickness of the glaze layer. At 1250-1280 c between high temperature and strong under reducing atmosphere kiln, high degree of glazed glass, strong, slightly transparent enamel eijun as jade.