Shi Chaoyi
Li Baoyu was also made the military governor ("Jiedushi") of Chenzheng Circuit (陳鄭, headquartered in modern Zhengzhou, Henan). Later in the year, when the new Yan emperor Shi Siming captured Luoyang (which, along with Chang'an, had been recaptured by Tang forces in 757), at Li Guangbi's request, Li Baoyu defended the southern fort at the important strategic position Heyang (河陽, near Luoyang) while Li Guangbi himself defended the central fort. Li Baoyu defended the southern fort despite an overwhelming Yan siege and eventually, Tang forces were able to stop the Yan advance. For Li Baoyu's contributions, he was created the Duke of Lecheng. In 761, however, when the eunuch official Yu Chao'en pressured Li Guangbi into trying to recapture Luoyang – which ended in spectacular failure—Li Baoyu was also forced to abandon Heyang and flee, apparently to Ze Prefecture (澤州, in modern Jincheng, Shanxi), for in 762, that was the location that Shi Siming's son and successor Shi Chaoyi put Li Baoyu under siege, which was lifted when the major general Guo Ziyi sent the Dingguo Army () to aid him, allowing Li Baoyu to turn the tables on the Yan forces and defeat them.