What are the glaze color characteristics of Jun kiln porcelain?

The glaze color of Jun kiln porcelain is different in shades, elegant and azure, so Jun porcelain still belongs to celadon, and the colorant in celadon glaze color is mainly iron. Perhaps it is the glaze containing copper that occasionally makes sky blue present colorful colors interwoven with copper red at a certain temperature. Because of the different composition of copper, there are different tendencies called "begonia red" and "rose purple", which give people endless color associations. It is as beautiful and brilliant as the rainbow in the sky after the rain. Some people use the Tang poem "The sunset glow is blue and sudden" to describe it.