A sprite in a blue pinafore, plimsolls, and white facemask flits through Hong Kong, enclosed in a quicksilver bubble of magic. Streets become the dull, slow backdrop to her vividness. Oblivious to storefronts and curious stares, seeing only the yellow lines and the cracks in the pavement, she snakes and two-steps around seams and lines without loss of élan, chanting spells that shade into vague sounds. “Step on a line,... see more