待你长发齐腰一把火烧掉
[dài nĭ zhăng fā qí yāo yī bă huŏ shāo diào]
Literally meaning 'wait until your long hair reaches the waist and set it on fire', this phrase combines waiting for beauty to bloom only to see it destroyed immediately after blooming. It poetically describes watching someone become beautiful and then causing deliberate damage.