Aaron Kwok Fu Sing earlier attended the film SILENT WITNESS' Beijing film poster press conference. Speaking of his film CHRISTMAS ROSE' poor box office performance he stressed that actors had no way of estimating the box office and audience taste, reports Mingpao. "Hard work, acting abilities, word of mouth, box office and awards may not have direct correlations. What I can do is play my character well. I believe that as long as I work hard, one day I will be able to perform a film with a good box office."As for Andy Lau Tak Wa's SWITCH, which had bad word of mouth but was a box office hit, Sing Sing declined to comment. "As an actor, I should not comment on other people's films. Otherwise it's very unfair. I understand that each actor has given their all for their work and he is helpless if other production segments let him down." Sing Sing stressed that he has not made a rotten film in over a decade. He said, "When I perform well I don't have box office, does everyone want me to play a little more rotten?"