天不怕，地不怕，只怕廣東人說官話 [－－－－－－－－－－广东－说－话]

Jyutping tin1 bat1 paa3 ， dei6 bat1 paa3 ， zi2 paa3 gwong2 dung1 jan4 syut3 gun1 waa2
Pinyin tiān bù pà ， dì bù pà ， zhǐ pà guǎng dōng rén shuō guān huà

Definitions (Wiktionary)
  1. proverb
    There is nothing to be afraid of except Cantonese people speaking Mandarin (because there is a stereotype that Cantonese people cannot speak Mandarin well).