Fire dancing is a mode of artistic expression that originated in Morini, Darro Local Sector, Non-Coercive Zone, and didn't get much further. The body of the dancer is coated with an oil, and the oil is lit on fire. The dancer then dances as normal, and the combination of bodily undulations (especially with the more energetic dancing styles) and the trailing varicolored flames produces a truly beautiful effect. In some forms of the art the flames are not extinguished till the dance is over--which means that dancer must move quickly before the coating is burned through. But not too quickly, or the moving air will fan the flames too hot and they will burn through before the dance is done.
The fire dancing of Morini is not to be confused with the vec fire dancing from Aries Vector. Although the basic idea is the same, the fact that the Metasoft dancers can dance arbitrarily long in their fireproof bodies makes the emotional and spiritual meaning entirely different: a purely aesthetic form of art, without the visceral feeling and danger.