What Hong Kong singer and actress was born Chung Dik-san and starred in The Twins Effect?
The Twins Effect:  The film was derived from Cantopop group Twins, starring both members Charlene Choi and Gillian Chung in the leading roles. Gillian Chung: Gillian Chung Yan-tung (born Chung Dik-san on 21 January 1981) is a Hong Kong singer and actress.
Gillian Chung