Li Zhengji
In Li Na's youth, Li Zhengji had put him in command of an army to aid in the seasonal defense of Tang's western border with Tufan, and Li Na, as part of this deployment, was at Chang'an to pay homage to Emperor Daizong. Emperor Daizong met him and gave him a number of honors. Later, after that deployment was over, Li Zhengji made him the prefect of Zi Prefecture (淄州, in modern Zibo, Shandong). During Li Zhengji's imperially-sanctioned campaign against Tian Chengsi, the military governor of Weibo Circuit (魏博, headquartered in modern Handan, Hebei) in 775, Li Na served as acting military governor in Li Zhengji's absence from Pinglu. Later, after a campaign against another rebellious military governor, Li Lingyao (李靈曜), Li Zhengji took five prefectures from Li Lingyao's Biansong Circuit (汴宋, headquartered in modern Kaifeng, Henan) and merged them into Pinglu Circuit. He then moved the headquarters of Pinglu from Qing Prefecture (青州) to one of the Biansong prefectures that he took, Yun Prefecture (鄆州, in modern Tai'an, Shandong), and made Li Na the prefect of Qing Prefecture, in charge of the old headquarters.