你不是我不用懂得我难过
[nĭ bù shì wŏ bù yòng dŏng dé wŏ nán guò]
'If You Were Not Me, You Would Not Need to Understand My Sorrow': Implies a deep level of personal emotion. It suggests that some emotions are exclusively personal and can only be understood if experienced first-hand, emphasizing the loneliness of one's own feelings.