Jiyin Commandery

Jiyin Commandery (Chinese: 濟陰郡) was a commandery in historical China from Han dynasty to Tang dynasty, located in what is now southwestern Shandong province.

In 144 BC, the Liang Kingdom was divided into five states. Jiyin, one of the successor kingdoms, was ruled by Liu Bushi. Bushi died only one year later, and his kingdom was converted to a commandery under imperial administration.[1] In 25 BC, Liu Kang (劉康), the second son of Emperor Yuan, was granted title "King of Dingtao", as the territory of Jiyin became the Dingtao Kingdom (定陶國). Kang's son Xin succeeded to the imperial throne in 8 BC as the Emperor Ai, and Dingtao was granted to Liu Jing (劉景), another member of the imperial clan. In 5 BC, Jing's fief was changed to Xindu, and Jiyin Commandery was reestablished.[2] In late Western Han period, the commandery administered 9 counties: Dingtao (定陶), Yuanqu (冤句), Lüdu (呂都), Jiami (葭密), Chengyang (成陽), Juancheng (鄄城), Juyang (句陽), Du (秺), and Chengshi (乘氏).[3]

From 72 to 84 AD, a kingdom under Liu Chang (劉長), a son of Emperor Ming, was established with Jiyin as its territory. It was abolished with the death of Chang.[4] Several counties were exchanged between Jiyin and neighboring commanderies, so that by 140, the commandery had 11 counties, including Dingtao, Yuanqu, Chengyang, Juancheng, Juyang, Lihu (離狐), Linqiu (廪丘), Shanfu (單父), Chengwu (成武) and Jishi (己氏).[5] Juancheng and Linqiu was transferred to Dong Commandery during the Jian'an Era.

During the Jin dynasty, Jiyin was lost during the Yongjia period to the northern states, but later reconquered during Emperor An's reign. Jiyin passed to Jin's successor Liu Song dynasty, and in Emperor Wen's reign, most of it was annexed by Northern Wei.[6] A new commandery, Pei, was split from Jiyin in 540. 4 counties remained: Dingtao, Lihu, Yuanqu and Chengshi.[7] The commandery was eventually abolished in early Sui dynasty.

In Sui and Tang dynasties, Jiyin Commandery became the alternative name of Cao Prefecture. In 741, it administered 6 counties: Jiyin, Kaocheng (考城), Yuanqu, Chengshi, Nanhua (南華) and Chengwu.[8]

Population
Dynasty Western HanEastern HanWestern JinNorthern WeiSui dynastyTang dynasty
Year 2140280534609742
Households 292,005[3]133,715[5]7,600[9]29,836[7]140,948[10]100,352[8]
Population 1,386,278657,55483,580716,848
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References
  1. Book of Han, Chapter 14.
  2. Book of Han, Chapter 80.
  3. Book of Han, Chapter 28.
  4. Book of Later Han, Chapter 50.
  5. Book of Later Han, Chapter 111.
  6. Book of Song, Chapter 35.
  7. Book of Wei, Chapter 106.
  8. New Book of Tang, Chapter 38.
  9. Book of Jin, Chapter 14.
  10. Book of Sui, Chapter 30.
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