Current condition
In use
The YWCA school 基督教女青年會丘佐榮中學 has several boundary stones around the lot area.
51 常盛街
https://maps.app.goo.gl/rAkFqbQGBxVhG2u9A
https://www.map.gov.hk/gm/geo:22.3186,114.1832?z=2257
9631 is the lot for CSK (la Salle)
https://www.map.gov.hk/gm/geo:22.3188,114.1835?z=2257
It's hidden in UK US under the piles of leaves between the white high wall and the manhole in this photo.
55 常盛街