Leather carving, also known as "soft relief", can be traced back to the period when nomads lived by water and grass. The original leather painting was mainly made of animal leather, which was carved, ironed and painted. Sheepskin maps and simple decorative paintings were the most common. It is different from traditional wood carving paintings. Because of the characteristics of cowhide itself, the flowers, leaves, feathers, trees, etc. Carved in the paintings are no longer rigid, rigid, and immobile in paintings such as wood carvings, jade carvings, and stone carvings. It is soft, moving, and alive. It is more incisive and vivid to express the bits and pieces in the painting closer to nature!