In close quarters, but not mad, not seeing the light of day.
Approximately so people live in Hong Kong.
Hong Kong has an area of 1,104 km ² and a population of 7 million. People, and is also one of the most densely populated areas in the world.
Rents are among the highest in the world at 128 US dollars per square meter per month.
Waiting list for public housing is enormous, and many families are forced to live in very tiny spaces in which to live simply intolerable.