Dingnan Jiedushi

Dingnan Jiedushi (), also known as Xiasui Jiedushi (), was a military post known as a "jiedushi" created in 787 by the Tang dynasty and lasted until the early Song dynasty when its rulers established the Western Xia. It was headquartered in modern Yulin, Shaanxi. Its rulers were of Tangut stock starting from Li Sigong (Tuoba Sigong), and they effectively ruled the circuit in "de facto" independence despite its nominal submission to the central Chinese dynasties. Attempts by the Later Tang and Song dynasty to dislodge the family from its rule of Dingnan Circuit were unsuccessful, and the region eventually became the independent dynasty of Western Xia.