Li You (李祐) (died June 22, 829[1][2]), courtesy name Qingzhi (慶之), was a general of the Chinese Tang dynasty.
After receiving approval from the chancellor Pei Du, whom Emperor Xianzong had put in charge overseeing the operations against Zhangyi, Li Su launched his surprise attack in winter 817.
[4] Li You was subsequently made the military governor of Xiasui Circuit (夏綏, headquartered in modern Yulin, Shaanxi) as well as the prefect of its capital Xia Prefecture (夏州).
The imperial censor Wen Zao (溫造) submitted an accusation that the tribute was improper and requested that Li You be arrested.
"[6] Thereafter, because there was a Tufan incursion, Li You was sent to the front to serve as the military governor of Jingyuan Circuit (涇原, headquartered in modern Pingliang, Gansu).
[6] In spring 829, when 3,000 Yicheng Circuit (義成, headquartered in modern Anyang, Henan) soldiers, who were fighting Henghai forces, suddenly mutinied and deserted, Li You intercepted them and slaughtered them.
He found an excuse to kill Wan, and then had Li Tongjie and his families arrested and bound, to be delivered to Chang'an.
[7] By this point, Li You was ill, and when he heard the news of Wan's death, he was so shocked that his conditions fell worse.
Meanwhile, various generals also submitted accusations against Bo, for having killed Wan for no reason and for appearing to want to take the credits of defeating Li Tongjie for himself.