Earlier this year I visited my home city of Johannesburg after seven years away, to find – as I do every time I return – everything at once the same and entirely different: old houses and haunts nestled just as I left them, but surrounded by unfamiliar spikes of development and decay. “You can’t go home again” goes the old phrase, but we can and we do, the warmth of nostalgia constantly battling the shock of the new. That tension is why homecoming is a such a recurrent, irresistible theme in the movies, though Davy Chou’s lovely, glimmering Return to...