[Hasnep]

I don't know why you're bringing Taiwan into this, and I don't think TSMC has an app...

[pdpi]

The context is somebody asking "Mainland US or Mainland China?" The comment you're responding to brought up Taiwan because that's the natural "not-mainland" when you're talking about China.

[Hasnep]

Taiwan is "not mainland China" in the same way that Greenland is "not mainland USA"

[rexpop]

What?? China and Taiwan are two separate countries.

[sheept]

Taiwan is the country that uses "mainland" (大陸 dalu) to refer to China

[pyreko]

HKers also refer to the rest of China with 大陸 from my experience.