While cleaning the den this afternoon, I found a box of long-lost treasure! :D "Healthy balls" from one of Ronjie's Taiwan trips.
Lifted off the package insert:
Directions of Healthy Balls
Healthy balls was developed originally in Chinese Sun Dynasty (960-1127 AD) for Martial art purposes, and was later played by the imperial families after the improvement of the sound like roaring dragon and singing phoenix created by ramming each other with hands.
Practicing healthy balls every day is good for one's physical conditions and also relax ones mind.
One can put two or more balls in a hand, and turn them by fingers slowly at the beginning, then increase the speed and strength gradually.
(This could use a lot of grammar editing. :D)