☆The blue and white porcelain is a white porcelain decorated with an oxidized cobalt that turns blue when it is reproduced at a high temperature of over 1200°C.
The blue-and-white porcelain, which combines a white background and a blue pattern to represent a fresh and refined decorative beauty, began to be used in the decoration of white porcelain from the Yuan Dynasty (1279-1368) in China, and was also widely produced until Ming and Qing Dynasties.

Due to this influence, blue and white porcelain began to be made in Korea around the mid-15th century in the early Joseon Dynasty, and until the late Joseon Dynasty, it was made mainly of official pottery installed in Gwangju, Gyeonggi-do.

Sagijang Han Sang-gu, an intangible cultural asset of Gyeonggi-do, succeeded his grandfather Han Sang-gu and his father Han Ho-seok, who worked at the pottery testing laboratory of the Governor-General of Korea, and succeeded his three-generation family business, using traditional kilns to produce white porcelain while sticking to the white porcelain color and the blue painting techniques of the late Joseon Dynasty.

His work is very elegant, and the manufacture of earth and the use of tools are considered to be the best reproduction of traditional blue and white porcelain.