[不知天高地厚, bù zhī tiān gāo dì hòu, ㄅㄨˋ ㄓ ㄊㄧㄢ ㄍㄠ ㄉㄧˋ ㄏㄡˋ]not to know the immensity of heaven and earth; an exaggerated opinion of one's own abilities[Add to Longdo]
[不知天高地厚, bù zhī tiān gāo dì hòu, ㄅㄨˋ ㄓ ㄊㄧㄢ ㄍㄠ ㄉㄧˋ ㄏㄡˋ]not to know the immensity of heaven and earth; an exaggerated opinion of one's own abilities[Add to Longdo]