Jia Prefecture (Sichuan)Jiazhou or Jia Prefecture was a zhou in imperial China seated in modern Leshan, Sichuan, China. It existed from the 6th century to 1196. Between 742 and 758 it was known as Qianwei Commandery.GeographyThe administrative region of Jiazhou in the Tang dynasty is under the administration of modern Leshan in southeastern Sichuan: Leshan Emeishan City Jiajiang County Qianwei County Muchuan County Mabian Yi Autonomous County Ebian Yi Autonomous County