1. the three legendary sovereigns of the third millennium BC: Suiren 燧人 (Suìrén), Fuxi 伏羲 (FúXī) and Shennong 神农 (Shénnóng), or 天皇 (Tiānhuáng), 地皇 (Dìhuáng) and 人皇 (Rénhuáng)