List of emperors of the Trần Dynasty | List of Byzantine emperors | Year of the Four Emperors | List of Byzantine Emperors | Four Emperors |
As a historian, Xu Xusheng authored the 1943 book, Zhong-guogushi tie chuanshiio shidai ("The legendary times in early Chinese history") where he comments that the name of Five Emperors was not mentioned until the Warring States era and cannot be found in the Zuo Zhuan, Guoyu, Lunyu, Mozi or Mengzi.