China is facing many of the same problems that the rest of the world is, with demographic decline, slowing growth, etc.
Those problems could be solved with a careful migratory policy (ie what America did back in the day because it was economically impossible for the entire third world to fly there; today, this could be enforced with laws)
Those problems could be solved with a careful migratory policy (ie what America did back in the day because it was economically impossible for the entire third world to fly there; today, this could be enforced with laws)