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This photo, taken on August 25, shows a mirage emerging at the boundary of the Tsaidam desert in north-west China's Qinghai Province. A mirage is a naturally-occurring optical phenomenon, which creates the illusion of water. The spectacle is often seen in the desert. [Photo:Xinhuanet]
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![This photo, taken on August 25, shows a mirage emerging at the boundary of the Tsaidam desert in north-west China's Qinghai Province. A mirage is a naturally-occurring optical phenomenon, which creates the illusion of water. The spectacle is often seen in the desert. [Photo:Xinhuanet]](http://images.china.cn/attachement/jpg/site1007/20080828/001109b42f730a20612708.jpg "This photo, taken on August 25, shows a mirage emerging at the boundary of the Tsaidam desert in north-west China's Qinghai Province. A mirage is a naturally-occurring optical phenomenon, which creates the illusion of water. The spectacle is often seen in the desert. [Photo:Xinhuanet]")
