sìng-siōng聖上

Your Majesty

Your Majesty; His Majesty (courtier's or minister's form of address for the current emperor)

English Wiktionary, “聖上” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E8%81%96%E4%B8%8A · confidence: Medium (Wiktionary, Hokkien)