The Ideological Shift from Goryeo Celadon to Joseon White Porcelain
While the Goryeo dynasty celebrated the jade-green translucence of Buddhist celadon, the founding of Joseon in 1392 initiated a profound ceramic revolution. Neo-Confucian philosophers favored pure white porcelain (*Baekja* / 白磁) as the material embodiment of moral purity, incorruptibility (*Cheongbaek* / 淸白), and intellectual clarity.
1. The Royal Official Kilns of Bunwon (分院) in Gwangju
Established along the banks of the Han River in Gwangju, Gyeonggi Province—directly adjacent to the ancestral estates and cemeteries of the Andong Kim clan in Namyangju—the royal kilns of Bunwon operated under the direct supervision of the Ministry of Taxation (*Hojo*) and the Court of Royal Supplies (*Saongwon*). Here, master potters fired white porcelain using refined local kaolin clay at temperatures exceeding 1300°C under strict reduction atmospheres.
2. The Moon Jar (*Dalhangari*) and the Ethos of *Geom-i-bul-ru*
The iconic 18th-century Moon Jar (*Dalhangari* / 白磁大壺) was thrown in two distinct halves and joined at the belly before firing. Its subtle organic asymmetry, milky white warmth, and absence of surface ornamentation perfectly echoed the household motto of the Jangdong Kim: Geom-i-bul-ru (“Frugal without being crude; refined without being extravagant”). Displayed in literati study rooms (*Sarangchae*), it served as an object of moral meditation.
3. Porcelain Tomb Epitaphs (*Baekja Myoji*): Lineage Recorded in Fire
Unlike paper scrolls or wooden tablets that succumbed to subterranean rot, high-fired white porcelain epitaph plaques (*Baekja Myoji* / 白磁墓誌) provided an indestructible record of genealogical descent. Placed alongside ancestral caskets in lime-soil tombs, sets of cobalt-inscribed porcelain tablets for Kim Sang-heon, Kim Su-hang, and Kim Jo-sun have been recovered intact, providing historians with pristine archival corroboration of dynastic state records.