李愬
Li Su, meanwhile, requested and received reinforcements from several circuits. He then began to carry out military actions in which he targeted Zhangyi officers, captured them, and then treated them well and incorporated them into his command structure, using their familiarity with Zhangyi's defenses against Zhangyi. Such Zhangyi officers he thus captured included Ding Shiliang (), Chen Guangqia (), Wu Xiulin (), Li Xian (李憲, whose name Li Su changed to Li Zhongyi (), and Li You. His soldiers were particularly displeased at his endearment of Li You, pointing out that Li You had killed many imperial soldiers, and further accused Li You of being an agent of Wu. Li Su, in order to calm the soldiers, delivered Li You to Chang'an, ostensibly for Emperor Xianzong to execute him — and instead sent a secret petition to Emperor Xianzong, stating that he could not succeed if Li You were executed. Emperor Xianzong thereafter pardoned Li You and delivered him back to Li Su. Li Su further abolished the former orders that those who took in Zhangyi spies would be executed — instead ordering his people that if Zhangyi spies arrived, they were to be treated with kindness. As a result, the Zhangyi spies were turned toward Li Su and informed him about the status of Zhangyi troops.