Since making his debut with 2002’s astonishing West of the Tracks, Wang Bing has been cinema’s most invaluable, conscientious witness of China’s 21st-century emergence as an industrial powerhouse—and the repercussions of the country’s “economic miracle” in its citizens’ lives. We here revisit two films that offer an intimate perspective on the manner in which the epidemic of mass migration in search of factory work is felt in daily life: in Three Sisters, a trio of siblings whose father has left them in their Yunnan Province village to find work in the garment industry; in Bitter Money, migrant workers laboring in the clothing mills of Huzhou.