Why a smileing face and a sad face on a theatrical mask?

The smiling face and the sad face on a theatrical mask represent the duality of human emotion and the range of experiences portrayed in performance. Traditionally known as the "Comedy and Tragedy" masks, they symbolize the two fundamental aspects of drama—comedy, which brings joy and laughter, and tragedy, which evokes sorrow and reflection. This visual representation highlights the complexity of storytelling and the emotional connections that theater fosters with its audience.