The governor system, which originated from the Ming dynasty, was a temporary assignment officer at first and then gradually transformed into a permanent local officer. Framework consisted of eight governors and twelve provincial governors were formed in the mid-Qianlong dynasty. 督抚制度起源于明朝,初为临时性的差遣官,以后逐步向常设的地方官转化,到乾隆朝中期形成了八总督和十五巡抚的格局。