People in China claim to have seen a floating city in the sky after a mirage in the shape of a cityscape appeared in the clouds over Jiangxi and Foshan. <br />The mysterious apparition, which many believe to have been supernatural, seemed to form a perfect city skyline when it was spotted by residents. <br />While some people think they have seen a parallel universe, weather experts are saying the unusual sighting was down to an optical illusion known as a Fata Morgana - a type of mirage which distorts objects which are far away.
