Blue metallic roofs cover houses on the edge of a land development site in Guiyang city, Guizhou province.
The roofs are built by house owners who expect their houses to be torn down by the government in a new phase of urbanisation. The owners assume they would get a larger compensation for their losses if they had a bigger house. The compensation is measured in part by the habitable area of existing properties.
For generations, Chinese farmers picked vegetables on family plots in China, a mainly agrarian society right up until the 20th century.
Faced with slowing exports, Communist leaders are pushing ahead with a historic plan to move 100 million rural residents into towns and cities by 2020 to create a new middle class and boost demand.