However, by this point, the imperial treasury had been exhausted by Emperor Muzong's extravagance, and Pei's battle plans were being interfered with by Emperor Muzong's trusted imperial scholar Yuan Zhen. The imperial forces were unable to achieve quick victory over Chengde and Lulong rebels, and when Tian Bu tried to advance his forces, they took mutinied under the leadership of Shi Xiancheng. Tian tried to rally the remaining troops, which refused to follow his orders further. He committed suicide, and Shi, who nominally submitted to the imperial government and thus received imperial sanction, took over Weibo. The imperial government was forced to capitulate, and soon also named Zhu and Wang military governors of their circuits as well, ending the campaign against them. From this point on, until the eventual fall of the Tang Dynasty altogether in 907, the imperial government was never again able to assert direct control over Chengde, Lulong, or Weibo.