thian-mōo天幕

canopy of the heavens

canopy of the heavens; backdrop of a stage; tentorium

English Wiktionary, “天幕” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A4%A9%E5%B9%95 · confidence: Medium (Wiktionary, Hokkien)