你不懂我的痛你不懂我的心
[nĭ bù dŏng wŏ de tòng nĭ bù dŏng wŏ de xīn]
Translated as 'You don't understand my pain, You don't understand my heart'. It reflects the loneliness of someone believing others cannot empathize with their feelings, and indicates a hope of being better understood by others