In June, the air in Haishi was thick with plane-tree fluff and the anxious feeling brought on by money changing hands at breakneck speed. Su Man stood by a window at the end of a corridor in one of the city's top private hospitals. Outside, the glittering CBD nightlife framed the outlines of skyscrapers like an empire. Atop the tallest and brightest of them, the enormous “Huanyu Technology” logo shone like a cold star, looking down on the world below.