Tsui Hark, born Tsui Man-kong, is a Hong Kong film director, producer and screenwriter. Tsui has directed several influential Hong Kong films such as Zu Warriors from the Magic Mountain, the Once Upon a Time in China film series and The Blade. Tsui also has been a prolific writer and producer; his productions include A Better Tomorrow, A Chinese Ghost Story, The Killer, The Legend of the Swordsman, The Wicked City, Iron Monkey and Black Mask.