However, after the Anshi Rebellion in the Tang Dynasty, the suspicion of military commanders became more and more serious, and Pugu Huai 'en was gradually distrusted by Tang Daizong. In the first year of Guangde (763), Pugu Huai 'en escorted his daughter and son-in-law (Uighur Khan) back to Mobei, but was falsely accused by eunuch Luo Feng of colluding with Uighur to do evil. So the Tang Dynasty sectarian emissaries went to appease him and let him show his ambition in court.
However, because of the precedent that Li Guangbi was killed when he seized power in Tang Dynasty, Pugu Wynn dared not enter the DPRK. At this time, the court sent Guo Ziyi to appease his ministry, and his son Pu Gu was also killed. PuGuHuai worried that he was unfortunate, so he rose up in a rage, led hundreds of riders, led more than 200,000 troops from Tubo and Uighur to attack the Tang Dynasty, and Guo Ziyi led the troops to resist. Bu Guhuai's mother accused him of not resisting and chasing after him with a knife. "I killed this thief for my country and took his heart to thank the three armies."
However, before long, Pu Huhuai suddenly died in the army, and Tubo and Uighur were also pacified by Guo Ziyi. It can be said that Pugu Wynn's rebellion was entirely the result of civil strife in the Tang Dynasty, but fortunately, his rebellion did not cause particularly great turmoil. Because of his military achievements, Tang Daizong did not regard him as a traitor and a thief. He still didn't cancel the status of the first hero of Lingyange, but felt sorry for him.