 In 790, when Zhao Gao () the prefect of Di Prefecture (棣州, in modern Binzhou, Shandong) rebelled against Wang Wujun and surrendered to Li Na, it was Wang Shizhen that Wang Wujun sent to attack Zhao, but Wang Shizhen was unable to recapture Di Prefecture.Only after Emperor Dezong intervened and ordered the two circuits and Weibo Circuit (which was also involved) to make peace with each other did Li Na return Di Prefecture to Chengde.After Wang Wujun died in 801, Emperor Dezong made Wang Shizhen military governor to succeed his father.