Excerpt, this is a 2015 article. Apparently, something else in 2018 has been seen over China:
Mysterious floating city appears in the sky over China
Conspiracy theorists say cityscape mirage over Jiangxi and Foshan caused by Fata Morgana is actually part of Nasa's secret 'Project Blue Beam'
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.
...
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.
Some people believe the mirage is part of a secret plan by Nasa to fake the second coming of Christ
Read more at: https://www.telegraph.co.uk/news/worldnews/asia/china/11940936/Mysterious-floating-city-appears-in-the-sky-over-China.html
Not sure if anyone has posted this other yet.
