http://www.myfoxny.com/story/21021301/hong-kong-poor-in-cages-shows-dark-side-of-property-boom Some images I found when searching for more details.
The cages look like nothing more than bunk beds. Not homes. The metal stacked beds are in a room. Why not just have regular beds? It would probably be cheaper too...
Why don't they rent bunk beds or cushioned recliner or mattress or hammock instead of cages? They can share one large shelf together. Bunk beds are better because it has mattress unless they couldn't afford bunk beds. But they are renting the cages so much more expensive than just buying a bunk bed. Sleeping in cages will surely cause many health problems such as backache.