Wang Shizhen
Also in 809, Wang Shizhen the military governor of Chengde died. Emperor Xianzong was initially willing to make Wang Shizhen's son Wang Chengzong the new military governor after Wang Chengzong offered to submit two of Chengde's six prefectures to imperial control, but after Wang Chengzong reneged on the offer, Emperor Xianzong declared a campaign against Wang Chengzong. The imperial campaign stalled, however, and Li Shidao repeatedly tried to intercede on Wang Chengzong's behalf. In 810, Emperor Xianzong ended the campaign and made Wang Chengzong military governor of Chengde.