你非良人怎知我心
[nĭ fēi liáng rén zĕn zhī wŏ xīn]
'Ni Fei Liang Ren Zen Zhi Wo Xin' could translate to 'If you’re not the right one, how can you understand my heart?' This implies a need for emotional compatibility and deep understanding in relationships beyond mere appearances or words.