was forced to commission Wu Shaoyang, much to the lament of his imperial scholar advisors, who viewed Zhangyi as a far easier target than Chengde.) The campaign against Chengde stalled, however, with one of its original major proponents, Lu Congshi () the military governor of Zhaoyi Circuit (昭義, headquartered in modern Changzhi, Shanxi), secretly communicating with Chengde and interfering with the campaign. In summer 810, after Tutu arrested Lu at a feast and allowed the imperial general Meng Yuanyang () to take control of Zhaoyi, Wang agreed to formally submit to Emperor Xianzong, claiming that it was Lu who interfered in his relationship with the imperial government. Emperor Xianzong, seeing that the campaign was making no advances, ended it and made Wang the military governor of Chengde. Middle reign After the end of the Chengde campaign, Zhang Maozhao () the military governor of Chengde's neighboring Yiwu Circuit (義武, headquartered in modern Baoding, Hebei), who had inherited his position from his father Zhang Xiaozhong, offered to yield the circuit to imperial control, and Emperor Xianzong agreed, sending the official Ren Dijian () to replace Zhang Maozhao. (After Zhang's departure from Yiwu, however, the Yiwu soldiers mutinied against Ren and put him under house arrest, although eventually another group of soldiers then countered their mutiny and restored Ren, allowing Yiwu to be in imperial hands from this point on.) Also in the aftermaths of the Chengde campaign, Tutu Chengcui was demoted and, later, after he was involved in a corruption scandal, sent out of the capital to serve as the eunuch monitor for Huainan Circuit (淮南, headquartered in modern Yangzhou, Jiangsu). In 811, at Li Jifu's suggestion, Emperor Xianzong appointed several officials—Duan Pingzhong (), Wei Guanzhi, Xu Mengrong (), and Li Jiang—to review the governmental structure, to streamline it, reduce the number of officials who were not carrying out any crucial tasks, and revise the officials' wage scale. Later in the year, with Emperor Xianzong believing that Li Jifu had often used his own personal likes and dislikes to decide on his policies, he promoted Li Jiang to be a chancellor as well, to counterbalance Li Jifu. Around the new year 812, Li Ning died. In fall 812, Emperor Xianzong created another son Li You the Prince of Sui, born of his wife, Consort Guo (formerly the Princess of Guangling), crown prince and changed Li You's name to Li Heng, even though