It can keep the tea and coffee in fresh taste for three days in hot weather. It combines poetry, painting, carving and handicraft into one teapot. From scientific research, purple clay does not contain lead, arsenic, cadmium, chromium, and other toxic materials which do harm to human healthy, whereas the research proves that purple clay contains sio2, al2o3, fe2o3, mgo, cao, these minerals are so good for healthy, such as control high blood pressure, limit complications of congestive heart failure, prevent diabetes complications and ease muscle cramps, aches and pains etc.