Basics of Northern Hao style Tai Chi Plum Blossom Praying Mantis Boxing. After warm up to limber the body and cultivate Qi, students learn movements of the forms and how they are applied in self-defense. Mantis is a quick style that trains the body to react to multiple threats from multiple directions. The mindset is trained to use the least amount of force necessary to neutralize a threat while the body is conditioned for speed and endurance. Rengeng Wang is considered the world's leading expert of the Praying Mantis Two-Handed Sword. He's president of International Dachengdao and a certifying master of the International Kung Fu Federation. Master Wang trains stunt fighters for movies and is the NY State Director of the World Stunt Association. His short film, 'The Lesson' has won several Indie Festival awards.