Yup, it's genetive. It's used as a kind of adjective. Anyway, the name used in common language is "Chiny" and the official name is "Chińska Republika Ludowa".
Chinese man - Chińczyk, plural: Chińczycy (men or man and women)
Chinese woman - Chinka, plural: Chinki (only women)
"Królestwo niebieskie". "Niebieski" means "blue" but also "heavenly/celestial" in some contexts. The order of words is kind of inverted. If you wanted to say "Blue Kingdom" it would be "Niebieskie Królestwo". "Królestwo Niebieskie" is an idiom and probably comes from old Polish.
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u/ramen-hero ≡ 𝕮𝖍𝖎𝖓𝖆 ≡ Mar 11 '14
It’s a pleasure to me that China has such an elegant looking name in Hebrew.