] When was the first time that underglaze color appeared in the porcelain industry’s decorative technology in the true sense?

The first real underglaze color appeared in the porcelain industry in the decorative technology was in Soochow in the Three Kingdoms.

According to relevant public information, the earliest traditional Chinese underglaze was the high-temperature celadon underglaze during the Three Kingdoms period and the Northern and Southern Dynasties, which used black and brown colors to paint magical figures or neatly arranged colorful spots for decoration.

At this time, although the celadon glaze and color renderings were not very exquisite, it was a pioneering work in terms of craftsmanship.

Therefore, the first real underglaze color appeared in the decorative technology of the porcelain industry was in Soochow in the Three Kingdoms.