Blue and white porcelain, also known as white ground blue and white porcelain, is often referred to as blue and white porcelain. It is one of the mainstream varieties of Chinese porcelain and belongs to underglaze colored porcelain. Blue and white porcelain is made of cobalt ore containing cobalt oxide, painted with patterns on the ceramic body, covered with a layer of transparent glaze, and fired in a high temperature reduction flame. Cobalt material is blue after firing, with strong colorin...