智窮力竭 [－穷－－]

Jyutping zi3 kung4 lik6 kit3
Pinyin zhì qióng lì jié

Definitions (Wiktionary)
  1. phrase, idiomatic
    at a loss as to what to do; at one's wits' end; at the end of one's rope (both mentally and physically)
    (syn.) 无计可施, 無計可施