Coba jelasin Nama Era dari Kaisar Ping dari Han dong

Yuanshi (元始): 1 M – 5 M

Permaisuri Xiaoping, dari wangsa Wang (; 4 SM – 23)

Bielenstein, Hans. (1986). "Wang Mang, the Restoration of the Han Dynasty, and Later Han," in The Cambridge History of China: Volume I: the Ch'in and Han Empires, 221 B.C. – A.D. 220. Edited by Denis Twitchett and Michael Loewe. Cambridge: Cambridge University Press. .