Antique Chinese Wucai Porcelain: Overglaze, Underglaze, In-glaze 中国古代五彩瓷：釉上，釉下与釉中
It is common and well known that Overglaze Wucai Chinese antique porcelains exist, such in Ming Wanli , Jiajing, and Qing Kangxi period. It is relatively rare for Underglaze Wucai porcelain such as in Yuan or Ming Xuande period. We found that a third type of Wucai which is neither Overglaze, nor Underglaze that exists. We can call it In-Glaze Wucai for now.