the three legendary sovereigns of the third millennium BC: Suiren 燧人[Sui4 ren2], Fuxi 伏羲[Fu2 Xi1] and Shennong 神農|神农[Shen2 nong2], or 天皇|天皇[Tian1 huang2], 地皇|地皇[Di4 huang2] and 人皇|人皇[Ren2 huang2]
the Five Legendary Emperors, usually taken to be the Yellow Emperor 黃帝|黄帝[Huang2 di4], Zhuan Xu 顓頊|颛顼[Zhuan1 Xu1], Di Ku 帝嚳|帝喾[Di4 Ku4], Tang Yao 唐堯|唐尧[Tang2 Yao2] and Yu Shun 虞舜[Yu2 Shun4]