童话说雨后会有一道彩虹却不曾说它也会转瞬成空
[tóng huà shuō yŭ hòu huì yŏu yī dào căi hóng què bù céng shuō tā yĕ huì zhuăn shùn chéng kōng]
This name reflects a sense of nostalgia and bittersweet sentiment. The phrase suggests that although fairy tales promise something beautiful (like a rainbow after the rain), such beauty can be fleeting, expressing the temporary nature of good things or moments in life.