Floating cities have been seen quite a few times recently, this latest sighting was seen above north central China in Wuzhong City with many believing that they are looking at a parallel universe.
The video shows what looks like tall transparent buildings and clear structures. The floating city appeared after a heavy hailstorm.
Some theories are that the scene was just a mirage or Fata Morgana which is an optical phenomenon which an object is reflected in the sky.
There are some suggestions that it was caused by Project Blue Beam, a test by NASA to develop holographic images.
Earlier in the year another floating city was seen in the sky above southern China which experts claimed was cause by fog.
What to you think? Is it the weather, optical illusion, or an actual parallel universe?