An Inch of Time is an Inch of Gold (寸光阴一寸金)

Albus knows as confidently as the water-wind spells (and as quietly as a Charm) that he has no bloody, earthly clue what he's doing here. He's been told that eventually he'll have his greatest hopes and aspirations. But he has to figure out what those are, first. (Or, Cheung-hwa "Cho" Chang marries Harry Potter, and their children carry a legacy does not speak.)