你是我唱不完的曲我是你听不完的歌
[nĭ shì wŏ chàng bù wán de qŭ wŏ shì nĭ tīng bù wán de gē]
'You are my endless tune, and I am your never-ending song' signifies an inseparable bond like music notes. Both individuals see themselves completing each other's lives in a melody that goes on infinitely, highlighting harmony in love.