This may or may not be aliens, but it’s definitely a UFO.
This video was shot in China sometime in 2010, and not 2014 as the YouTUbe title suggests. Regardless of the timing, it makes for interesting viewing.
It shows a UFO to the left of the cloud. Then two smaller objects move away from the first and fly around in what could be conceived as some kind of formation.
It looks like the UFO spins at one point, which strongly suggests it is some kind of craft rather than just a reflection of weather balloon.
I’d love to think it was aliens from another planet on a day trip to Earth, but we’ll have to make do with calling it an Unidentified Flying Object for the time being.