Li Zhengji
Li Na was born in 758, during the reign of Emperor Suzong. His father Li Huaiyu, who was of Goguryeo extraction, was then serving as a military officer at Pinglu Circuit (then headquartered in modern Chaoyang, Liaoning) under Li Huaiyu's cousin Hou Xiyi (侯希逸), who was the acting military governor of the circuit at that time. By 761, however, the Pinglu army, which was cut off from the rest of the Tang realm by the rebel state of Yan at that time and had to further fend off not only Yan forces, but forces of Khitan and Xi tribes, could no longer stand, and they abandoned Pinglu Circuit and fought their way south. In 762, Emperor Suzong's son and successor Emperor Daizong made Hou the military governor of Ziqing Circuit (淄青, headquartered in modern Weifang, Shandong) as well, and the names of Ziqing and Pinglu merged. In 765, the soldiers overthrew Hou because he was overburdening them with labor, and they supported Li Huaiyu as his successor. Emperor Daizong agreed and made Li Huaiyu military governor, changing his name to Li Zhengji. Li Zhengji proceeded to, despite nominally submitting to imperial authority, rule Pinglu effectively as a semi-independent realm.