待你长发系腰少年娶我如何
[dài nĭ zhăng fā xì yāo shăo nián qŭ wŏ rú hé]
Taken from traditional poetry and stories where long hair represents beauty and maturity in women. It's a tender request from a girl to the boy she loves, asking him if he would marry her when her hair grows enough to wrap around his waist, symbolizing commitment until then.