This is the Chinese name of the famous Golden Crown Restaurant that stood at 66-70 Nathan Road. The Golden Crown Court building still bears the title that gave the name to the restaurant, and readers of my Bruce Lee-related mumblings will know that Bruce himself was seen at the restaurant on the odd occasion, including a meal with Bob Wall and Chuck Norris during the filming of Way of the Dragon.
So, anyway, we now know that this scene was filmed at the southern end of Nathan Road and I suspect that the road we can see on the right is the junction with Haiphong Road. Here is the modern view courtesy of Streetview (Golden Crown building on the left with the large cutaway section above the pavement).
Thanks to the FLICKR Then/Now expert, HK Man, we can see the same sign compared to the modern view: https://flic.kr/p/6WCfaV