Do the Dancers Ever Get Burned?

Yes. That's real fire and despite all their skill and practice it's not only common for the dancers to get burned, but also cut by the knives  . . . which adds an extra element of danger and daring to their routines. Of course, most dancers have also conditioned themselves to working closely with the heat and flames.

By the way, there's no trick or extra protection involved in the fireknife movement where some dancers put the flames on the soles of their feet: Such ability comes from walking barefoot for years and developing thick calluses on the feet. Even so, it's still very hot.