Anyway, the first few scenes show various people arriving by boat on a small waterfront somewhere. I initially figured it to be Sai Kung - a place that has been on quite a few films here already - but on closer examination realised it was in fact Cheung Chau.
The scene also ends with a brief glimpse of a temple front. It's the Pak Tai temple on Cheung Chau - quite recognisable despite the poor film quality. It looks like that stone incense urn is still there.