[ww_wpg]

The search result I'm finding for that phrase is "Wǒ bù huì shuō zhōngwén. I kept saying it over and over again, the phrase I had memorized to explain my inability to speak their language".

So I guess it means "I don't speak Mandarin"?

[elikoga]

The "Wǒ bù huì[...]" part means "I negate/not can[...]"

It means precisely the opposite.