What are the common decorative themes of porcelain?

Qian Wen is one of the common decorative themes of Song porcelain, which is often used as the edge decoration of plates and bowls. As a theme decoration, it is often painted on the abdomen of objects. Bead pattern is one of the decorative patterns in Song and Yuan Dynasties, which is characterized by small beads in a big bead or 3-5 small beads in a big bead. Beaded pattern is a kind of pearl shape like a string, which is made by using a thin mud bar to hover and stick it on the porcelain blank according to the specified contour line, and then drawing a horizontal line segment on the mud bar. Brocade patterns are mostly square and continuous, and consist of various geometric figures, including diamond brocade, turtle back brocade, cross brocade, 20% discount brocade, osmanthus brocade, ancient money brocade and so on. , mostly decorated on the shoulders of bottles and jars or the mouths of bowls and dishes, with strict structure and rich decorative patterns.