待我长发及腰你就是我的新娘
[dài wŏ zhăng fā jí yāo nĭ jiù shì wŏ de xīn niáng]
'Wait Till My Hair Reaches My Waist, You'll Be My Bride'. It represents anticipation for maturation (or transformation), signifying readiness to make a big change in relationship, i.e., getting married when she finally reaches the state (long-haired) he finds ideal. It expresses a romanticized notion about love and marriage preparation, which usually comes along with growth and maturity.