你非我怎知我的难受
[nĭ fēi wŏ zĕn zhī wŏ de nán shòu]
'Ni Fei Wo Zen Zhi Wo De Nan Shou', translates as 'If you're not me, how would you know my discomfort?' This suggests that personal feelings and experiences are unique and incomprehensible by others without living through the same situation oneself.