A piece of magnetized iron would flip the other way if you turned over the magnet. That's why in the Chinese videos you see them remove the magnet, flip it over, and put it back.
The same "end" of LK99 floats, no matter which pole of the magnet you put toward the sample.
How is this different than a tiny magnetized piece of iron ?
Are they saying this piece showing in the video will always float the same way regardless of orientation ?
Also would this effect still work with an electromagnet ?