The eastern expansion of CBD and the Tongzhou New City ( video here, in Chinese but with lots of pictures) are just two examples of this sprawl, a trend that will likely make central Beijing property even more desirable and expensive.

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Several lesser but charming examples of the genre go up for auction at Sotheby's "British Pictures 1500-1850" sale in London on July 14.

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Picasso tended to work and rework pictures, such as his famed "Armchair Woman" series, of which Christie's has 28 examples.

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