Here's the spot where Francis Ng and Louis Koo question Wayne Lai.
Now, this one might be up for debate, although I'm almost completely convinced. This is the only spot I can think of which has bridges built in this style, with that variety of decorative wall, running along the waterside. The topography - small hill in top left of capture - also matches.
The Street View image shows the bridge that I believe is in the background of the scene in the film, there's too much foliage around the actual one to get an good shot of it.