If you look very carefully in the scene where the twins are in the bathroom one of them takes out a paper towel as soon as he takes it out it "magically" grows back it looks like through the use of 3d, and in any scene where the twins are together if you watch carefully one of them is always fuzzy like bad camera effects.
shareNot just the fuzzy effects (which are probably not effects at all, but mistakes), but the fact that one twin is always looking in the wrong direction when addressing the other.
This film was made prior to the common use of greenscreening so some of the errors are understandable, but I'm surprised that the dual scenes weren't digitally corrected later. Maybe they felt it wasn't worth the expense. I know Jackie Chan was unhappy with the special effects and I read something about how he would only allow special effects in his American-made movies.
neat . . . sweet . . . petite
There’s a few times when they cut the split screen too close and one of the Jackie’s Loses his nose or some of his hair, normally when the are both on top of each other. Overall it's really not bad for the time period, there's a lot of interaction and interplay with the two both in frame.
The bathtub scene is great.
I mean it's not Back to the future 2, But you don't expect a chinese movie from 1992 to have anywhere near that budget.