高不成，低不就 [－－－－－－－]

Jyutping gou1 bat1 sing4 ， dai1 bat1 zau6
Pinyin gāo bù chéng ， dī bù jiù

Definitions (Wiktionary)
  1. phrase, idiomatic
    unable to aim high but unwilling to aim lower; too choosy to succeed (in choosing a job or one's spouse)
    (syn.) 高不凑, 低不就, 高不辏, 高不湊, 高不輳