A local resident walks past ancient watchtower houses, known as "Diaolou", which were built during Qing Dynasty, in Zili County of Kaiping, southern China's Guangdong province in this June 18, 2007 file photo. The Diaolou of Kaiping, China, was inscribed Thursday World Heritage status by the 31st World Heritage Committee meeting here, Xinhua News Agency reported. Picture taken June 18, 2007. [Reuters]

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