童话说雨后会有一道彩虹却不曾说他也会转瞬成空
[tóng huà shuō yŭ hòu huì yŏu yī dào căi hóng què bù céng shuō tā yĕ huì zhuăn shùn chéng kōng]
'Fairy tales tell us a rainbow appears after rain but forget to mention it fades as quickly as it comes' comments on how idealized scenarios in fairy tales don't address impermanence or reality. The speaker seems disillusioned with romanticized ideas.