 A tomb about southwest of Dingzhou from 55 was discovered and excavated in 1973.It contained several fragments of Han literature, including manuscripts of Confucius's "Analects", the Taoist "Wenzi", and the "Six Secret Teachings", a military treatise.Dingzhou took its present name around 400 when it became the seat of Ding Prefecture under the Northern Wei, displacing the earlier An Prefecture.