What does red-faced judge Guan Gong mean?

The big case of Guan Gong's red-faced judgment means impartiality. This is a fable that consists of two parts: Guan Gong tries cases impartially. The red-faced Guan Gong is a red figure in Peking Opera. In traditional Chinese opera, painting a red face means playing a friendly or lovely role in solving contradictions and conflicts, representing positive or just figures. It is a commendatory term, expressing loyalty and courage to honesty and frankness, as well as bloody and brave figures.