The production areas of cast mirrors in the Song Dynasty were centered in Huzhou, Raozhou and Chengdu. Most of the bronze mirrors produced had handles and were all plain without patterns. The mirror inscriptions were mostly in the form of fonts and trademarks, and the fonts were often preceded by "zhou". The first name and last name are strictly controlled by the government and can only be carried if they have an engraving. In 1956, bell-shaped bronze mirrors from the Song Dynasty were unearthed in Nanchang City, Jiangxi Province, and Tiaodeng River, Chengdu, Sichuan Province. They were all cast in the shape of a bell, usually without buttons, with plain edges, and the backs of the mirrors were decorated with text. The body of the lotus-petal-shaped bronze mirror is flat and thin like a lotus petal. The back of the mirror is usually plain without patterns, and some have inscriptions on it. Tripod-shaped bronze mirrors usually have no buttons and plain edges, and the back of the mirror is mainly decorated with auspicious patterns. In 1974, a bottle-shaped mirror from the Song Dynasty was unearthed in Xinjian County, Jiangxi Province. The back of the mirror is decorated with plum blossoms and the moon reflecting in the water. It has no buttons and has a plain edge. Although these strange mirror shapes are extremely rare, they are a major feature of the bronze mirrors of the Song Dynasty.