Well the circumstances have remarkable similarities. Much of China's economic growth has been attributed to underpaid agricultural labor becoming better paid factory labor. (still underpaid but less so perhaps). That raises the amount of disposable income people have which raises their standard of living.

The next chapter in this book are unions (well that was the chapter that followed urban migration in many other countries) where the workers, demanding a fair wage for their work strike and stop production. This chapter can't start until there aren't enough underpaid agri-workers to fill the positions, but once there are, look out.

How all of that plays out in a totalitarian regime is not well understood at all. In the US and elsewhere the folks to took union organizers out behind a shed and shot them were eventually brought to justice and punished, enough so that the practice became too risky for the factories. It has been suggested that in highly corrupt or complicit governments that correcting force (justice for organizers against being shot) may prevent the formation of effective unions. And how that plays out on the world scene is even less well known since Europe and the US went through the union chapter when there wasn't instantaneous communication around the world.

Interesting times indeed.