Produced in Huanglong Mountain, it occurs occasionally, the ore content is extremely rare. And the appearance of the ore material is red and dense.
Firing temperature range is wider. Generally, it is fired at about 1120~1150℃, and the shrinkage rate is about 5.5%. After firing, it is bright red, and its surface has a grainy texture.
Roughly the same as Zini, it is in the shape of a fine pear skin, with a pure and moist fetus and a luster like jade.