C291 Identification of Ru Porcelain

Ru porcelain was the first of the five famous kilns in Song Dynasty. In the history of Chinese ceramics, there was a name of "You kiln as the leader", with precious agate as the glaze, with unique color, and a name of "Tianqing as the precious, the powdery cyan as the original, the azure as the precious", and a name of "the agate as the ancient inheritance of glaze"