Tony Leung Ka-fai (simplified Chinese: 梁家辉; traditional Chinese: 梁家輝; born 1 February 1958) is a Hong Kong actor who is a four-time winner of the Hong Kong Film Award for Best Actor.
As he is often confused with actor Tony Leung Chiu-wai, Tony Leung Ka-fai is known as "Big Tony", while Tony Leung Chiu-wai is known as "Little Tony", nicknames which correspond to the actors' respective age and physical statures.
Source : Wikipedia