No, they don't choose the low wages voluntarily..it's just how their economy works..Things are generally cheaper, people don't need that much money to live..that keeps the wages down...so democrazy..or the lack thereof..
Well, they have to have the one-child policy..otherwise there will be no work, not enough food produced in China...Then they would have to import more...putting an upwards pressure on prices...making them less competative..
They really got it figured out..