Yizhou Prefecture is located in Yixian County, which is the later prefecture. The territory under the jurisdiction of the Tang Dynasty is equivalent to the south of the Great Wall of Hebei Province, the north of Anxin and Mancheng, and the south to the west of Juma River. Many changes have taken place since Liao Dynasty. During the Yongzheng period of the Qing Dynasty, he was promoted to the governor of Zhili. The jurisdiction includes Laiyuan County and Laishui County. 19 13 was revoked and the state was changed to county. It is the gateway to Hebei Province. At the beginning of the Five Dynasties and the Northern Song Dynasty, there was a fierce war with Qidan. In the Ming Dynasty, it was not in harmony with Vala and other departments, and this place was an important town to control bauhinia. It is also famous for producing high-quality ink, which is called "Yishui method" in the world.