The apparition which was witnessed by hundreds of shocked local residents only lasted a few minutes before completely disappearing.
One possibility, discussed on several forums, is mirage, a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the sky. Another possibility is a Fata Morgana, one kind of superior mirage.
However, others have the raised the fear that this mysterious phenomenon was possible the result of a project Blue Beam test, a holographic technology performed in order to test the reactions of the residents of the city Foshan or it was a temporarily vortex of a possible parallel universe.
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