What is the meaning of Guangdoor people?

The meaning of this meme:

It means Cantonese.

The source of this meme:

It comes from the locker room showdown between Demon Man and VAN.

Biollante: Hey buddy I think you've got the wrong door. The leather club's two blocks down.

Biollante: I heard you are also a Cantonese People, so we are fellow villagers. (wrong door is a Cantonese, blocks down is a fellow countryman)

Van Darkholme: Fxxk you.

VAN様 (Van Darkholme): FA♂Q!

Usage of this meme:

Cantonese people mainly speak Cantonese, so in Mandarin the pronunciation of the word "Cantonese" is like Cantonese.