The special multi-layered glaze would bring the flow when fired in high temperature. It changes in the bright-colored bottom of cup just like the universe, and it gives a direct impression of colorful, and gorgeous. Temmoku glaze is the highest iron content of the glaze in the clay. It fired by high temperature, and formed various crystal spots and wire grain. It is a high difficult expertise area in ceramic research, and it also has high value of collection.