If you notice, that post you responded to was written about 4 years ago. At that time, there was a labor shortage and some Chinese workers were beginning to see wage increases and better working conditions.
Of course, manufacturers can't be putting up with that so, since that time, there has been an exodus inland, into more rural areas where labor is still poor and desperate.
Despite the sanitization of labor history from the textbooks some 30 years ago, wages and working standards improved in the U.S. because of our political system and millions of people who risked their lives over a period of decades to demand it, not some natural market driven evolution. China doesn't have that system. The Chinese can't strike for better conditions or vote for political representation friendly to wage and worker safety legislation.
China will not be changing it's approach any time soon. Even If they had such temerity, the manufacturers would run off to Indonesia, Malaysia and other backwater countries in search of cheaper labor and more lax regulations.
It's a race to the bottom. You can expect Africa to be the next manufacturing capital if they can ever get a good, strong, stable dictatorship going. Corporations much prefer dictatorships, but they do have to be strong enough so as to not be vulnerable to freedom fighters or revolutionaries that might expropriate the corporations assets.
As CEO of GE, Jack Welch once put it, (to paraphrase): "In a perfect world, a corporations manufacturing facilities would be based on a barge. It would roam the earth in a constant quest for the cheapest labor and the fewest regulations."
With better wages and work conditions comes higher prices. To avoid that and keep market share, corporations will weigh anchor on their barge and move out of China, just like they moved from The Northeast, to the Midwest, to the South, To Mexico, To Asia.......... After Africa, where?
