I said it was a reflection, not a recreation. It's interesting that they bear more similarity to Communist prison camps, almost like another sign that pre-apocalyptic USA was essentially a democracy in name only, no less the evil empire than it claimed China to be.
Still, it doesn't seem likely we would see an Enclave from out of China. China's history is even longer and more complex than the USA's, and when central leadership is broken, they would likely have just as rough a time of inter-faction fighting as anywhere else.
But... A Fallout set in China... That would be intriguing. It could probably delve into what first sparked the nuclear conflict, because from what little lore we've got, it looks like everybody was surprised the missiles were loosed and the bombs were dropped. That's a little big for just the Conspiracy/Enclave to pull off on their own...