Chinese therapy balls have long been famed as one of the "there treasures " of Baoding China. First produced during the Ming Dynasty (1368- 1644) , therapy balls have often been improved through the ages by skilled Chinese handicraftsmen.

Originally, these balls were simple solid cylindrical object, Later, handicraftsmen began designing holllow balls and inserting sounding plates that produce high and low tones when used. These lighter balls are easier to handle and the musical tones contribute to the relaxation process that results form exccrcsing with then. The balls are placed in one's hand and torated in either a clockwise or counterclock wise direction. This excrcise will keep all of the points in one's hands in constant motion, with the muscles in one's fingers and forcarms contracting and relaxing harmoniously. Beginners should select balls of a smalles size and then, over time increase ball size as one's proficiency impoves. Ultimately, one can exercise both hands alternately or simultaneously and may even choose to use three or four balls in hand.

The balls are made of metal and, hence should be kept dry and clean. Although the balls are strong and durable, owners should acoid violently knocking them against each other and against othcrrsolid objects and surfaces. If one plans not to use them for a long period of time it is advisable to coat the balls with wax or grcase for maintenance ndpreservation.