↑ Otto Maenchen-Helfen (1973). The world of the Huns: studies in their history and culture. University of California Press. tr. 373. ISBN0-520-01596-7. Truy cập 9 tháng 2 năm 2012. When in 324 Emperor Ming, whose mother, nee Hsün, came from the Hsien-pei kingdom of Yen, heard about the rebellion of Wang Tun, he rode into the camp of the rebels to find out their strength. He rode in full gallop through the camp. His puzzled enemies though he was a Hsien-pei
