The Magic Crystal - Andy Lau (1986) - Oxford Road, Kowloon Tsai

The location of the school attended by Andy's nephew, Ban Ban, is located at the junction of Oxford Road and Ho Tung Road in Kowloon Tsai. I first tried finding this place according to the plot marker that you can see in the top image. However, it looks as though this plot number (NKIL 4539) was discontinued - most likely the plot was divided up, or joined with another, and assigned a new number. In the end I was guided by the distant image of Lion Rock in the background of image 2. 

The building on the site was/is a real school, although you don't really get to see much of it on film. We can see more of the brown building next door, which is the famous Maryknoll Convent School. I found out a few years ago that Terry McQueen (daughter of Steve McQueen and Neile Adams) attended that school whilst her dad was in Hong Kong filming The Sand Pebbles in 1966.