Most of people of Yunnan are emigrated from the other place; our ancestors came here, and fought against the nature, then settled down. Just like the migratory birds, fly here and there, searching for a best place forever. This type made by a very special skill, first choose the material, carve to be a shape, then engrave the drawings, filled with the pigment, at last polish it. Because the drawings are carved into it, but not painting on it, so it is difficult to fade away.