Candy Ka-Man Yuen only accepted this role because she thought it's a prestigious movie with some "Artistic Nudity" but movie turned out as Category III soft-core.
According to cast members at least two more, long sex scenes in various positions involving Dominic Ho and Candy Yuen was shot but non of them ended up in final movie, however you can see few seconds of it while Michelle is watching it on her laptop in the yacht.