Yixing teapots are all hand-made with Raw ore purple sand, rather than being thrown on the wheel. The hard clay is pounded with a heavy wooden mallet into a slab, and the bodies of the teapots can be made in three basic techniques: segmented teapots are press-moulded; round teapots are paddled, and square teapots are made by the slab method.
Raw ore: ore that has been mined without beneficiation or other processing.
Purple sand: also called purple sand mud, elegant known as "rich soil", for the production of purple sand pot (ware) the main raw material.
Raw ore purple sand: just mined out has not processed the original purple sand ore.