明镜高悬

perspicacious and impartial in judgment (idiom)

surname Gao

high / tall / above average / loud / your (honorific)

Ming Dynasty (1368-1644) / surname Ming / Ming (c. 2000 BC), fourth of the legendary Flame Emperors, 炎帝[Yan2 di4] descended from Shennong 神農|神农[Shen2 nong2] Farmer God

bright / opposite: dark 暗[an4] / (of meaning) clear / to understand / next / public or open / wise / generic term for a sacrifice to the gods

mirror / lens

to hang or suspend / to worry / public announcement / unresolved / baseless / without foundation

Der Spiegel

mirror (as a metaphor for sth beautiful, bright and flat – such as a lake – or sth that provides clarity and insight)