2. color. Cowpea red is a kind of high temperature glaze, and it is a kind of copper red glaze that appeared in the late Kangxi period. The so-called copper red glaze is a kind of red glaze which is fired in reducing flame with copper-containing substances as colorants. Its color is very special, and its overall color is uneven pink, which is very similar to cowpea, hence its name. The color of cowpea red is not found in other porcelains, and even ordinary people will be deeply moved by this color once they see it.