Arguably, immigration controls are also similar to the movement controls of Apartheid. They're just more socially acceptable because pretty much every country does it.

Sure. But discriminating on your own citizens based on where they were born (or where their parents were born in china’s case) is extra douchey.

I believe you can change Hukou after a few years so it's not strictly where they were born.

Many American state universities discriminate against students based on where their parents live (e.g. charging in-state vs out-of-state tuition).

A. Yes but it’s very hard. You have to marry in it or be a grad from a good university in a good major.

B. Yes, but you easily get residence by living there for less than a year. Also,public K12 schools can’t discriminate like they do in china.