^During the Eastern Han Dynasty, Youzhou, as one of 12 prefectures, contained a dozen subordinate commanderies, including the Guangyang Commandery. In 24 AD, Liu Xiu moved Youzhou's prefectural seat from Ji County (in modern-day Tianjin) to the City of Ji (in modern-day Beijing). In 96 AD, the City of Ji served as the seat of both the Guangyang Commandery and Youzhou.[3] The Wei Kingdom reorganized and decentralized the governance of commanderies under Youzhou. Guangyang Commandery became the State of Yan (燕国), which had four counties: Ji County, Changping, Jundu and Guangyang County, and was governed from the City of Ji. Fanyang Commandery was governed from Zhuo County. Yuyang Commandery was govered from Yuyuang (in modern-day Huairou District of Beijing), Shanggu Commandery was governed from Juyong (in modern-day Yanqing County of Beijing).[4]