你知道我为你改变很多我知道你为我改变很多
[nĭ zhī dào wŏ wéi nĭ găi biàn hĕn duō wŏ zhī dào nĭ wéi wŏ găi biàn hĕn duō]
It expresses mutual understanding and acceptance in a relationship where both parties have changed a lot for each other, reflecting a deep connection and compromise.