Goryeo Blue and White Porcelain Fish Head Flat Vase. Height: 19 cm. Length: 20 cm. Width: 6 cm. This is a blue and white porcelain item from the Goryeo Dynasty (918 - 1392), influenced by Chinese Song Dynasty blue and white porcelain. It is made of kaolin porcelain, with a blue glaze applied on the surface. The glaze has "crackled" patterns. It was produced using molding and incised techniques. The shape is a fish-head flat vase. The body is engraved with scrolling flowers. The glaze is smooth and blue, with natural crack patterns, embodying the style of "figurative blue and white porcelain" of Goryeo. Goryeo Dynasty (12 - 14th century). Goryeo blue and white porcelain is the representative of ceramic craftsmanship on the Korean Peninsula. This vase has a unique shape and exquisite craftsmanship, and is an important physical evidence for studying the cultural exchanges between China and Korea and the inheritance of ceramic craftsmanship.