好戰必亡，忘戰必危 [－战－－－－战－－]

Jyutping hou3 zin3 bit1 mong4 ， mong4 zin3 bit1 ngai4
Pinyin hào zhàn bì wáng ， wàng zhàn bì wēi

Definitions (Wiktionary)
  1. proverb
    a country that loves to go to war will perish, but a country that forgets how to go to war will be endangered