From BBC News:
By the side of a busy road in Shanghai‘s financial district, Zhao Ping Hua is mixing cement.
Twenty years of a booming China have meant 20 years of back-breaking work for him.
He is a labourer on the city’s new metro system, and one of the millions of farmers who leave the countryside every year for the riches of the city.
The wages are good here, as much as $250 (170 euros; £119) a month, with overtime.
But for him it means sacrifice, living away from his family, and he misses his children. [Full Text]