五帝

五帝	wǔ dì	the Five Legendary Emperors, usually taken to be the Yellow Emperor 黄帝, Zhuanxu 颛顼, Di Ku 帝喾, Tang Yao 唐尧 and Yu Shun 虞舜
五	wǔ	five / 5
帝	dì	(bound form) emperor; sovereign; supreme deity