Beyond Kung Fu: Breaking an Opponent's Power Through Relaxed Tension is the most recent book from martial arts luminary Leo T. Fong. Order your copy here.Fortunately, Jet Li persuaded Zhang to resurrect the Hero project and finish the film. In the movie, which boasted a $17-million budget, Donnie Yen plays Lone Sky Iron Shield, part of a trio of assassins trying to kill Emperor Qin Shi Huang Di, the infamous dynastic figure who fought to unify China during the third century B.C. (He’s the historical figure whose burial site is guarded by 8,000 life-size terracotta warriors near the Chinese city of Xian.) Jet Li plays Qin's bodyguard. "I loved the script so much that when I finished reading it, I cried twice because my character Nameless has strong feelings about what's going on,” Jet Li told me before heading to China to film. “In my career, it's the first script that made me cry. It's an incredible story where drama is first and action is there to help the story." Donnie Yen joined the cast at Li's insistence. "I thought I wasn't ready to go back to China to shoot a film yet,” Yen confessed after Shanghai Knights (2003) premiered. “I was kind of spoiled working outside of Hong Kong [with] all the catering and pampering. But when Ching Siu-tung (Hero's fight director and the father of ‘wire-fu’) said that I'd be fighting Jet, I said OK. “I was also thinking that after 10 years, Jet just wanted to beat me up again." Yen was referring, of course, to the battles the two of them had in Once Upon a Time in China II (1992). The unique aspect of the Jet Li–Donnie Yen rematch in Hero is certainly the way they fight without fighting. According to kung fu folklore, martial artists with powerful chi could sit in front of each other, send their spirits out of their bodies and have the spirits fight. A fighter died if his spirit died during the fight. This is the first time most Americans had seen this on-screen. Zhang wrote Flying Daggers while shooting Hero and thought that if the film's tone wasn't in direct contrast to Hero, he'd quit the project. "I originally intended Flying Daggers to be a sequel to Hero but realized that would interfere with making it different,” Zhang said. "They're both differing stories of sacrifice. Hero is sacrificing for righteousness, and that's more in line with the traditional Chinese culture and philosophy. In Flying Daggers, the characters are willing to sacrifice their traditional values in order to achieve their own individual ends … and this moves it away from traditional wu xia films." Go here to order Dr. Craig D. Reid’s book The Ultimate Guide to Martial Arts Movies of the 1970s: 500+ Films Loaded With Action, Weapons and Warriors.