冠冕堂皇

high-sounding / dignified / pompous (idiom)

surname Guan

hat / crown / crest / cap

to put on a hat / to be first / to dub

royal crown / official hat / official / leader / chief / elegant and stately

crown in the form of a horizontal board with hanging decorations / imperial crown

(main) hall / large room for a specific purpose / CL:間|间[jian1] / relationship between cousins etc on the paternal side of a family / of the same clan / classifier for classes, lectures etc / classifier for sets of furniture

imposing / grand

emperor / old variant of 惶[huang2]