Infernal Affairs - Andy Lau (2002) - Audio Space, Ap Liu Street

A real audio business that was used for the scene when the two main characters first meet, without knowing who the other one is. It was, and still is, located at 151 Ap Liu Street in Sham Shui Po. The establishing shot was filmed on Ap Liu Street in front of the shop at a time when there were a significant amount of signs hanging overhead. These have all pretty much disappeared courtesy of a Government crackdown on illegal and dangerous structures a few years back. But the shop space hasn't been moved. In fact the company appears to be quite proud of its fame and has some images on its own website.