一前言清代史学大师钱大昕,曾对唐代的使职发表过一段精辟的见解:节度、采访、观察、防御、团练、经略、招讨诸使,皆无品秩,故常带省台寺监长官衔,以寄官资之崇卑。其僚属或出朝命,或自辟举,亦皆差遣无品秩。如使有迁代,则幕僚亦随而罢,非若刺史、县令之有定员有定品也。此外,如元帅、都统、盐铁、转运、延资库诸使,无不皆然。即内而翰林学士、弘文、集贤、史馆诸职,亦系差遣无品秩,故常假以他官。有官则有品,官有迁转,而供 A foreword Qian Daxin, the master of Qing Dynasty historiography, once delivered a brilliant insight on the post of Tang Dynasty: Jiedushi, interview, observation, defense, group training, Provincial Tai Temple prison chief title, to send the capital of the noble. His staff or out of life, or self-incumbent, are also sent unscrupulous rank. If there is migration, then the aides also strike, if not if the provincial governor, county magistrate has set staff also have. In addition, such as Marshal, Du Tong, salt and iron, transit, extension of all reservoirs, all are all. That is, within the Hanlin Bachelor, Hongwen, Jixian, History Museum of various posts, also sent unskilled rank, so leave with his official. Officials have products, officials have moved, and for