Bronze bowls like this one have been found in China that date back to the 5th century B.C.
When filled with water and when the handles are rubbed in just the right way, the bowl will sing in a low-pitched tone. The sound vibrations, in turn, disturb the surface of the water so it shoots up in spouts. In just a short amount of time, you can learn to make the water dance!
Makes a wonderful aid in meditation or just a great conversation piece.