China's robot-powered factories have made it virtually tariff-proof despite Trump's trade war. Beijing bureau chief Keith Bradsher explains how automation, demographic pressure, and strategic investment transformed China into the world's dominant advanced manufacturer, leaving the U.S. and Europe struggling to compete. China installed more factory robots in a single year than the entire rest of the world combined, achieving higher automation density than the U.S., Germany, or Japan combined. China's one-child policy created a labor shortage forcing automation investment, while simultaneously producing college-educated workers who refuse low-wage factory jobs, eliminating worker opposition to robotics.