青壯年 [－壮－]

Jyutping cing1 zong3 nin4
Pinyin qīng zhuàng nián

Definitions (CC-CEDICT)
  1. the prime of one's life
Definitions (Wiktionary)
  1. noun
    young age and “prime age”; prime time of one's life; age defined variously as between 15 and 64, between 15 and 60, or between 30 and 40