郭子仪
In 758, Guo Ziyi, Li Guangbi, and other jiedushi were ordered to eliminate the last remaining rebels in Yi. However, Suzong was troubled by the growing power of the jiedushi so he placed his eunuchs in charge of the campaign. This became a disaster, but Guo Ziyi managed to make the best out of the situation by convincing his fellow jiedushi that they could have one easy victory if they laid siege to the rebel city. All of them agreed to this strategy and the rebel's supplies were depleted during the siege. When the time came to assault the city, however, there was no commander-in-chief to coordinate the attack since all the jiedushi were of equal rank, and it proved ineffective. In the meantime, reinforcements under Shi Siming arrived to reinforce An Qingxu. The Tang forces missed the opportunity to eliminate the rebels. A bloody battle followed in 759, fought in poor weather and again with no central command for the Tang. Although the Tang force emerged victorious, both sides suffered tremendous losses (the rebel leader Shi Siming himself was killed, as were most of the Mongol rebels) and the result of the battle was unacceptable to the emperor, since the Tang army had been known to win battles while suffering relatively few casualties. The jiedushi began to blame one another, and many of them targeted Guo, placing much of the blame on him. In fact, aside from the emperor himself, Guo Ziyi was the only one that the common people were willing to follow. Suzong, worried by Guo's popularity, used this as a pretext to decrease Guo's authority, demoting him while generously rewarding the other jiedushi.