窮山惡水出刁民 [穷－恶－－－－]

Jyutping kung4 saan1 ok3 seoi2 ceot1 diu1 man4
Pinyin qióng shān è shuǐ chū diāo mín

Definitions (Wiktionary)
  1. proverb
    very poor and adverse natural environments produce crafty and malevolent people