没心没肺地笑呕心沥血的哭
[méi xīn méi fèi dì xiào ŏu xīn lì xuè de kū]
Laugh Without a Care and Cry One's Heart Out: Contrastingly portrays two intense ends of human emotion where laughing without worries can suddenly turn into extremely sorrowful moments. This juxtaposition shows vulnerability despite attempts to appear indifferent.