长发飘飘不及腰真心少少不留存
[zhăng fā piāo piāo bù jí yāo zhēn xīn shăo shăo bù liú cún]
The literal meaning is something like 'flowing long hair yet doesn't reach the waist, true heart but less remains'; this hints at appearances vs reality within a relationship or oneself, expressing the contrast between outward beauty and inner truth.