How Tsui Hark refreshed wuxia films with supernatural detective mystery The Butterfly Murders, his 1979 debut

• ‘Martial arts films so far have been very limited in form … I hope to strike a new path,’ a confident Tsui Hark said of his feature debut The Butterfly Murders
• Its mix of history, horror, martial arts and mystery and Tsui’s quick edits, lighting and make-up effects made it different – and a minor masterpiece, in fact