You know the people in this book. You'll remember the harassed waitress from your local Chinese restaurant. You've noticed those builders across the street working funny hours and without helmets. You've eaten the lettuce they picked, or bought the microwave they assembled. The words 'cockle-pickers[...]

Each year, 200 million workers from China's vast rural interior travel between cities and regions in search of employment: the largest human migration in history. This indispensable army of labor contributes half of China's GDP, but is an unorganized workforce - "scattered sand" - and the most marg[...]