The stand-in for Golden Harvest studios comes from Tao Fung Shan in the hills above Shatin. We see it a few times on film with the name "Pearl of the Orient" Studios.
By sheer coincidence...I have just re-posted an old blog post from my other site with a few more pictures of the place. You can see the post here and it mentions a real-world Bruce Lee connection to the location. Don't forget we have also seen this location previously courtesy of the Noble House mini-series where it stood in for Beijing.