Vietnam developed the art form of water puppetry, unique to that country. The puppets are built out of wood and the shows are performed in a waist-high pool. A large rod under the water is used by puppeteers to support and control the puppets, creating the appearance of the puppets moving over water. The origin of this form of puppetry dates back seven hundred years when the rice fields would flood and the villagers would entertain each other. Puppet show competitions between Vietnamese villages eventually led to the creation of secretive and exclusive puppet societies.