Pulling this from the chat into its own thread:
I do use that Countries list in the spreadsheet, but much less frequently. The work in there is a bit different, too - I have to figure out what the different admin levels are for regions and cities. That work can be quite tricky.
Within CityStrides, the data hierarchy is Country → Region → City → Street → Node
You mention “importing them as their own regions”, so it sounds like you’d expect these to exist as Regions within the Country of China - just need to confirm my understanding there.
I think I need to review admin level options, though, because Macau looks like it should be its own region and city based on Macau - Wikipedia (and also because none of the subdivisions in Macau provide full coverage) … In those cases, I generally just keep a same-name record at both levels e.g. China → Macau → Macau → 馬忌士街 Rua de Eduardo Marques
The China → Hong Kong → admin level 6 setup does have full coverage & there’s nothing smaller that that … it’s unfortunate that level 6 is so huge.