Sang de boeuf refers to the colour which translates to French for 'ox blood', a colour created by oxidising iron & copper.
Sang de boeuf was one of a number of new flambé glazes, marked by unpredictable but highly decorative and varying effects. First developed in the Jingdezhen porcelain kilns during the Kangxi reign (1662-1722).
The term tianqiuping, sometimes translated as 'celestial sphere vase', derives from the vase's form, which is characterized by a generously proportioned globular body surmounted by a tall cylindrical neck. During the Qianlong period (1736-96), when tianqiuping gained prominence, these vessels were produced in varying sizes.

