The initial set of elements comes from the Hong Kong Museum of History, which is well worth a visit. There are reconstructions of various buildings and street scenes from the 1800's and early 1900's that can provide a lot of inspiration. Unfortunately the lighting is very dim in most of the halls, but I've done my best to lighten up the elements.
Traveling Chinese Opera show:
Hong Kong and Shanghai Bank:
Chinese Medicine Shop:
In addition to the street scenes, the museum has some beautiful model ships and interesting diorama of the Chinese destruction of British opium that kicked off the First Opium War.