Migrants vital for city growth
By Lan Lan | China Daily | Updated:  2013-06-06 08:02
 
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 Men work at a high-speed railway construction site in Ningbo, Zhejiang province. Urbanization means more opportunities for migrant laborers in the country. Hu Xuejun / for China Daily  | 

Cao Wei, 34, feels lucky to have his son's company.
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