This is a creativity work of genius Gary Chang, an architect from Hong Kong. In one of the most populated cities in the world, where 30 square meter apartments are a way of living, one has to be creative. His apartment was the first to suffer a major transformation. Gary managed to fit 24 rooms in such a place and each and everyone of them has its unique personality. This was possible due to an ingenious system of sliding walls which can be moved around in order to reveal more room and utilities. (Via)