唐前期長期存在親王典州制度，除了個別重要的皇子，大部分親王都要分蒞方面，擔任地方州府（或都督府）的刺史（或都督）。唐代王府自身有一套僚佐體系，而地方州府也有一套官員系統，這兩套官僚體系之間到底是什麼關係，由於史料的缺憾，之前無從得知。但是隨著墓誌資料的不斷發掘和積累，證明這兩個看似毫無瓜葛的官僚體系，實際上存在密切的關係。在親王典州的背景下，王府僚佐往往跟隨親王之藩，兼任地方府州僚佐。王府僚佐屬京官體系，府州僚佐屬外官體系，兩者之間互相兼任的情形，影響了唐代前期的一些重大政治事件、地方行政管理制度以及王府制度本身。

During the early Tang, it was a common political practice for royal princes to be appointed as provincial governors. Except potential competitors for the throne, most of these princes were granted the responsibility of protecting imperial rule as provincial officials. Equipped with a large group of officials who formed the Princely Establishment, a prince was supposed to be in charge of another large group of officials who formed the local administrative system. Due to a paucity of records, it had long been unclear how these two groups of officials worked together when a prince was appointed to be the provincial governor. During the last several decades, however, thousands of epitaphs have been excavated. These epitaphs have provided plenty of new information, including new knowledge about princely staff who worked as staff members in local government when their masters acted as the highest officials in local places. According to the information, we now can conclude that these two groups of officials maintained a close and complex relationship during the early Tang. In most cases, the subordinate officials at a Princely Establishment took the positions of local government; as a result, those princely officials worked in two different offices for the same master. Such a situation deeply influenced the political history of the early Tang and changes our understanding of local administration, Princely Establishments, and important political events.