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by atdrummond 1318 days ago
They do, actually, due to Hukou. There is not complete freedom of movement within China.
1 comments

Other than the annual university entrance exam and buying properties, Hukou is no longer enforced. The real difference only exists for tier-1 mega cities like Beijing and Shanghai, 97% Chinese don't live there.
Since you can't get married without buying real estate, then it is pretty much enforced.