There are an estimated 110 million migrant workers in China aged between 16 and 40 years old. They left home in the hope of building a better life for themselves and their family, yet when they start a family of their own, they are faced with a stark choice; either take their children to the cities and subject them to institutionalized discrimination, or leave them behind in the countryside in the uncertain care of relatives.
Recent research has shown that the number of children left behind is about 58 million, three times higher than previously estimated. Moreover, compared with other children, those left behind are more likely to be victims of crime, and a significantly higher proportion suffers from psychological and behavioral problems caused by long-term separation from their parents.
http://www.china-labour.org.hk/en/node/100316
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