Yeoju, in Gyeonggi-do Province, Korea, produces Yeoju white porcelain clay and is a region where white porcelain pottery was made during the Goryeo dynasty. The tradition continues with the work of Lee Eun Sung-jun, which takes the form of a container designed to store and transport precious liquids (such as honey) from the Goryeo dynasty. The inside of the white porcelain lid is sealed with a cork, making it airtight, and the lid is designed to fit snugly against the body of the container to avoid shaking.