天高地厚 [－－－－]

Jyutping tin1 gou1 dei6 hau5
Pinyin tiān gāo dì hòu

Definitions (CC-CANTO)
  1. the immensity of heaven and earth; the complexity / profoundness of something
Definitions (Wiktionary)
  1. phrase, idiomatic
    complexity of things
  2. phrase, idiomatic
    profound; deep (of kindness)
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (粵典–words.hk)
  1. Cantonese
    居然挑战大总统，真系不知天高地厚。
    居然挑戰大總統，真係不知天高地厚。
    geoi1 jin2 tiu1 zin3 daai6 zung2 tung2, zan1 hai6 bat1 zi1 tin1 gou1 dei6 hau5
    • He audaciously challenges the President with overconfidence in his abilities.