Chinese Balls

Strolling through Chinatown today I was running early for a meeting so popped into the supermarket and was looking at some Baoding Balls... i quote from the leaflet

"The basic exercise for learning how to use the balls consists of rotating a pair in the palm of the hand, ensuring even and constant contact is made between the balls - the idea being to maintain permanent contact between them. Once this has been learned, the rotation speed can be gradually increased until the balls separate in the hand. Eventually, one can learn to rotate them completely without the balls making contact with each other".

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