A few years ago, as part of China's preparation for the Olympics, Beijing launched an unrelenting demolition campaign that targeted the pockets of slums nestled among the spiralling skyscrapers and gleaming residential complexes.
In the eyes of the authorities and well-off, these 'villages in the city' are hotbeds of crime and a disgrace to a modern capital about to host the world's most prestigious sporting event.
However, for hundreds of thousands of rural migrant workers eking out a living on anything between 800 yuan (HK$916) and 2,000 yuan a month, these slums and basement homes are all they can afford.
Even then, the rent takes up a big part of their earnings - between 300 to 500 yuan a month.
In 2005, the authorities launched a 'reform plan' for the slums, and commissioned the Beijing Academy of Social Sciences to identify the villages.
In all, 171 'villages' were singled out for demolition ahead of the Games.