笑到哭才叫伤哭到笑才叫痛
[xiào dào kū cái jiào shāng kū dào xiào cái jiào tòng]
It translates to 'Only laughing until crying truly means getting hurt, and only crying until laughing genuinely signifies pain.' It conveys a mix of deep and intense emotions - sorrow intertwined with bitter joy as a coping mechanism for inner turmoil.