How do you define "slave wages?" Did it ever occur to you that those women who leave the farm to work in factories in the Pearl River Delta are making eight times as much as they did on the farm? That many would be consigned to a life of prostitution if it weren't for the factories?
I think you have entirely missed my point and if you want to argue about factory workers and prostitution in China you might want to take it up with somone else.
PS. What is the difference between slave labor and free labor?