Ray Lui and Simon Yam made 9 films together, and the 4 rated ones average 6.00, 0.43 below their career marks. The best is Raging Fire at 7.1.

Ray Lui averages 6.45, Simon Yam averages 6.41. Apart that suggests 6.43; together they average 6.00, a lift of −0.43.

Lift is the average of their films together minus the mean of their two career averages.