Porcelain-making had been enhanced by the Mongolians who ruled China during the Yuan dynasty (1271-1368).
From the Yuan dynasty, Jingdezhen became the porcelain-making center in China. The world-famous “Yuan Qinghua”, which literally means “Yuan dynasty flower design porcelain”, was also made during that time.
“Yuan Qinghua” porcelain was mainly made in Jingdezhen, Jiangxi province. Kilns in Zhejiang province and Yunnan province also made it.
“Yuan Qinghua” porcelain was made with a special kind of pigment painted on the surface of the porcelain before glazing; the pieces were fired at a high temperature. The design painted on the porcelain would turn blue. Popular patterns include lotus flowers, peonies, plants and clouds.
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Yuan Qinghua porcelain is relatively thicker, heavier and larger in size compared with other types of china. It was commonly seen as large bottles, jars, bowls, and dishes made in Tang or Song style.
Very few pieces of the original Yuan Qinghua porcelain survive, making them quite valuable. The most expensive piece of Yuan Qinghua porcelain, Monster Descending the Mountain, was auctioned off for £14 million in 2005.