后东突厥汗国的建立是单于都护府治下突厥分裂势力直接付诸行动的历史产物,与唐王朝的内忧外患和羁縻府州制的局限性有直接的联系。后东突厥汗国对漠北的占领迫使安北都护府南迁同城,改变了唐代北部边疆两大都护府的布局及性质。 The establishment of the post-East Turkestan Khanate (KMT) was the historical product of the Turkic separatist forces being put into action under the monopoly of the capital. It was directly related to the internal and external problems in the Tang Dynasty and the limitations of the state system of the Mirage. The occupation of the northern Mogolia by the East Turkestan Khanate forced the Anhwei capital to relocate to the south, changing the layout and nature of the two capital cities in northern Tang Dynasty.