I bloody thought this was a nerd trawling exercise! Or, maybe just China trolling, like you said. Payback for smashing their weather balloons?

But it was obvious to me from the first video I watched. A handheld potato camera filming the monitor of a microscope, when the microscope itself contains a good camera. That, plus the fact that he spins the magnet multiple times in his hand, like a magician. It's impossible to track which side of the magnet he is using.

Surprised HN went so hard on it. It's stuff like this that's made me slash my HN reading time.