Red China vs Gansu province

Red China and Gansu province both are nouns.

Word	Noun	Adjective	Verb	Adverb
Red China	Yes	No	No	No
Gansu province	Yes	No	No	No

Red China (noun)	Gansu province (noun)
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world	a province in north-central China; formerly part of the Silk Road to Turkistan and India and Persia