窮則思變 [穷则－变]

Jyutping kung4 zak1 si1 bin3
Pinyin qióng zé sī biàn

Definitions (CC-CEDICT)
  1. when you hit bottom, you have to come up with a new approach (idiom)
Definitions (CC-CANTO)
  1. poverty gives rise to a desire to change for the better