I have no idea what its about, but I've been seeing the same thing. Its not an ad though, its actually a text box with A LOT of text. Its also not just chinese, there is a variety of random symbols as well as some japanese characters (not to sure on the last one).
It is definitely not an ad as it does not follow any grammar that I can see, is it some kind of code instead? It doesn't bother me at all really, but I have no clue what its about.
Living in a frogger's paradise
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