待你长发及腰他已结婚
[dài nĭ zhăng fā jí yāo tā yĭ jié hūn]
'待你长发及腰'(wait until your hair grows down to your waist) suggests a wait until the beloved becomes mature enough or is ready for marriage. The latter half means that by the time you're ready for him, he has already married someone else, signifying disappointment in unreciprocated love.