First, there must be a jade texture. Porcelain making in Song Dynasty pursues the effect of jade, with jade as the top grade, especially as a porcelain product fired by the court, it needs to be fired with jade.

Second, the glaze is as white as ivory. After the Five Dynasties, before glazing, no cosmetic soil was applied to the kiln. The glaze water of white glaze is white and yellow, so the color of glaze is so-called "ivory white".

Third, look at "bamboo brush marks". In the process of tire building in fixed kiln, when the tire is half dry, it is repaired with bamboo brush, so there are some "bamboo brush marks" on the tread.

Fourth, "wax tears" are common on glaze. This "tear mark" is caused by uneven glazing and glaze water flowing down when burning. The lower part of the vertical glaze is like wax tears, and the lower part of the spherical surface is light green. This "tear mark" only appears on the outside of the dishes. Whether there are "tears" has also become a basic feature to judge whether Beiding is firm or not.

Historical influence

Due to the popularity and reputation of Ding Kiln, its modeling, decoration and firing methods were imitated by porcelain kilns all over the country, and Ding Kiln was imitated all over the country during the Northern Song Dynasty. This has produced imitators like Touting, Ding Xin, Bei Ding, Nan Ding and Fending.

The quality of products in many areas is not worse than that in Quyang, Hebei. Ding kiln has a far-reaching influence on China porcelain industry in later generations: Jingdezhen, which is famous all over the world, is deeply influenced by it, and Wu kiln in Longquan, Beijing and Pingding, Shanxi form a Ding kiln system; Egypt, Europe and Southeast Asia all have the remains of Ding Kiln porcelain.

Reference to the above content: Baidu Encyclopedia-Ding Yao