待我长发齐腰待我光芒万丈
[dài wŏ zhăng fā qí yāo dài wŏ guāng máng wàn zhàng]
Translated as two parts: 'when my hair reaches my waist' and 'wait until I become brilliant/shine'. The first part can denote looking forward to personal growth or development over a long period of time, and the second implies anticipating becoming better or achieving something important in life.