Eh, why it's always Americans who complain about slavery in China, India but on the other hand happily consume products from them? On the other hand Chinese and Indians are not that unhappy about the hard working conditions, since they know they need to work hard in order the catch pace with European and US standards of living if not for them, for their children. "Unfortunately" they didn't have a chance to invent colonization so they need to earn their wealth by working. There's nothing inherited to them, as their European or US counterparts.
Luckily after centuries they are doing good now. Every single day Asian countries, those developing ones, are really developing. That's in expense of harsh working conditions, but seeing "developed" world falling while they are getting better every day is evidently the real paycheck, numbers only fool economists, and angry workers in developed world. They think those workers work for peanuts, but actually they are getting their futures.