Duhu, official name.westEmperor Xuan of the Han DynastyDivine baronTwo years (first 60) purchase“Western Region Capital Guard”, the highest officer stationed in the Western Regions, controls the countries in the Western Regions."City" means all, "protection" means leading troops to supervise, and "capital protection" means "chief protection".
During the Eastern Han Dynasty, he was a single official.It was not often abandoned afterwards.In the Eastern Han Dynasty, Wei Dynasty and Jin Dynasty, there were captains, and in Guangzhou, there were captains of Xijiang and Nanjiang.
Eastern Han DynastyEmperor GuangwuTime settingGeneral of Capital Protection，three countriesWei Yanzhi.ShuyouZhongduhu（Li Yan）. Xingduhuo, whose authority is as followsdadudu , commanding all internal and external military affairs.Wu set up the right and left capitals to protect all armies.See at《Romance of the Three KingdomsShu Shu: Biography of Liu Peng, Liao Li, Liu Wei and Yang“Zhang WuIn the second year, the leader (Li) Yan visited Yong'an Palace and paid homageShangshu Decree。For three years, the former Lord was seriously ill, and (Li) Yan YuZhuge LiangAnd was assisted by a posthumous edictMinority owner；Take strictness as the central protection, unify internal and external military affairs, and stay in the townYong'an。”
Tang Dynasty from Taizong toWu ZetianSet successively whenAnsi, An Bei, Shan Yu, An DongAnnan、BeitingSix "metropolises".Each government setDaduhe, deputy general protection (orAssistant nurse）To manage border defense, administration and affairs of all ethnic groups within its jurisdiction.Yuan dynastyDufuThere are Dadu nurses, Tongzhi nurses and deputy dadu nurses as supervisorsUyghur （Uygur）Chief Justice in litigation between ethnic and Han nationalities.
