The Bending Styles Are Real Kung Fu
None of the fighting in the show was made up from scratch. Waterbending is built on Tai Chi Chuan, earthbending on Hung Gar, firebending on Northern Shaolin, and airbending on Baguazhang, with Toph getting her own flavor pulled from Southern Praying Mantis. The show's animators actually studied footage of these styles to get the movement right.
