Tsui Hark, born Tsui Man-kong, is a Hong Kong filmmaker. Tsui has directed several influential Hong Kong films such as Zu Warriors from the Magic Mountain (1983), the Once Upon a Time in China film series (1991–1997) and The Blade (1995). Tsui also has been a prolific writer and producer; his productions include A Better Tomorrow (1986), A Better Tomorrow II (1987), A Chinese Ghost Story (1987), The Killer (1989), The Legend of the Swordsman (1992), The Wicked City (1992), Iron Monkey (1993) and Black Mask (1996). He is viewed as a major figure in the Golden Age of Hong Kong cinema and is regarded by critics as "one of the masters of Asian cinematography".

Once Upon a Time in China is a Hong Kong film and television franchise created and produced by Tsui Hark, consisting of six films and a television series released between 1991 and 1997. Tsui also directed four of the films and co-wrote the first five as well as an episode of the television series.