Thanks to Siu Wan, we now know where the old site for the Fanling orphanage use to be.
Also Diana has been going through extraordinary efforts calling the HK Fanling Library, and have been virtually walking the streets of HK through google. I love your tenacity!
Yes, the location of Fanling Orphanage is called World Trade Square. Click [HERE] to see the location on a map.
World Trade Square No.21 On Lok Mun Street, Fanling N.T., Hong Kong