The filming required an immense effort from all involved. Chow and Yeoh had to learn to speak Mandarin, which Lee insisted on using instead of Cantonese to achieve a more classic, lyrical feel. The astonishing battles between Jen (Zhang) and Yu Shu Lien (Yeoh) on the rooftops and Jen and Li Mu Bai (Chow) atop the branches of bamboo trees required weeks of excruciating wire and harness work (which in turn required meticulous "digital wire removal"). But the result is a seamless blend of action, romance, and social commentary in a populist film that, like its young star Zhang, soars with balletic grace and dignity. --Eugene Wei