Shanxi Province, China

During the first part of the Five Dynasties and Ten Kingdoms Period (907 - 960), Shanxi supplied rule for three of the Five Dynasties, as well as being the only one of the Ten Kingdoms located in northern China. Shanxi was initially home to the jiedushi (commander) of Hedong, Li Cunxu, who overthrew the first of the Five Dynasties, Later Liang Dynasty (907 - 923) to establish the second, Later Tang Dynasty (923 - 936). Another jiedushi of Hedong, Shi Jingtang, overthrew Later Tang to establish the third of the Five Dynasties, Later Jin Dynasty, and yet another jiedushi of Hedong, Liu Zhiyuan, established the fourth of the Five Dynasties (Later Han Dynasty) after the Khitans destroyed Later Jin, the third. Finally, when the fifth of the Five Dynasties (Later Zhou Dynasty) emerged, the jiedushi of Hedong at the time, Liu Chong, rebelled and established an independent state called Northern Han, one of the Ten Kingdoms, in what is now northern and central Shanxi.
Shi Jingtang, founder of the Later Jin Dynasty, the third of the Five Dynasties, ceded a large slice of northern China to the Khitans in return for military assistance. This territory, called The Sixteen Prefectures of Yanyun, included a part of northern Shanxi. The ceded territory became a major problem for China's defense against the Khitans for the next 100 years, because it lies to the south of the Great Wall.