The company that is running the HK subway, MTR Corporation (a public company, but 75% owned owned by the "HK government", i.e. China), is also handling operations for some none-HK/China locales:

* London: TfL Rail: Paddington to Heathrow Airport and Liverpool Street to Shenfield (100%)

* Stockholm: the subway (100%)

* Melbourne: the metro (60%)

* Sydney North West Rail Link (60%)

More details:

https://en.wikipedia.org/wiki/MTR_Corporation

Please wear Free Hong Kong or Taiwan flags or similar while traveling on these routes

Ah, this was downvoted, so that's probably a good signal. Also try to get your photo taken!