Firmament

天空

tiānkōng

(vault of the heavens — see also heavens, sky)

昊天

hàotiān

(vault of the heavens — see also heavens, sky)

皓天

hàotiān

(vault of the heavens — see also heavens, sky)

穹宇

qióngyǔ, qiōngyǔ

(vault of the heavens — see also heavens, sky)

穹蒼 /穹苍

qióngcāng, qiōngcāng

(vault of the heavens — see also heavens, sky)

蒼天 /苍天

cāngtiān

(vault of the heavens — see also heavens, sky)

蒼穹 /苍穹

cāngqióng

(vault of the heavens — see also heavens, sky)

霄漢 /霄汉

xiāohàn

(vault of the heavens — see also heavens, sky)