挾泰山以超北海 [挟－－－－－－]

Jyutping hip6 taai3 saan1 ji5 ciu1 bak1 hoi2
Pinyin xié tài shān yǐ chāo běi hǎi

Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    to do something impossible; to be a mere fantasy