China’s policies are confusing, first they wanted to move everyone to the major cities, now the cities are saying they will cap the populations. Anyone know what is going on?
That's not true, China does not want to move people into major cities, that's why they have the "Hukou" system, which is a residency registration. What they want is urbanization of the less developed areas, many of which were farmlands from before.
Everybody wants that. Can't remember that any country ever got it, in the last century, anyway. That's akin to wanting water to roll uphill.
Argentine will prefer its population to not clutter around Buenos Aires. France will prefer everybody not move to Paris, same for Russia with Moscow. But that's just not what is happening anywhere.
If you're moving to a city, makes total sense to pick a powerful one.