This documentary captures the hard realities behind Chinese economic development. Specifically, the plight of migrant workers -- something I discussed earlier here.
This quote from the director says it all:
"There is a complex economic chain between the rich lifestyles of developed countries and the hard work of Chinese peasants who are trying to survive. At the two ends of the chain, neither party understands the other."
See also here:
“Many times I was in tears at all this misery ... If you were on this train with hundreds of migrants around us — it stinks, it’s dirty and everyone’s trying to survive, just to see their kids.”