What this playful photo reveals about Hong Kong’s infamous ‘Walled City’ | CNNIt was the summer of 1989. Hong Kong’s humidity – already oppressive – was intensified in the dark, maze-like alleyways of an unruly enclave known as Kowloon Walled City. Then the most densely populated place on Earth, its buildings were packed together so tightly that barely a slither of sky was visible from the ground. Searching for a moment of respite from the heat and chaos below, photographer
