The An Shi Rebellion was caused by Jiedu Envoy An Lushan and others, and after the chaos was pacified, the Tang Dynasty declined. The problem of the division of feudal towns and clans has occurred in the country, and some localities have made the supporters respect themselves and become a country of their own.
Tang Xianzong Li Chun was an accomplished emperor. At the beginning of his reign, he exerted great efforts to govern and was determined to change this situation, so he "ruled the clan town with law" and even began to use troops against the strong clan.
Not long after Tang Xianzong ascended the throne, Nishikawa Jiedu caused Liu Pei to rebel. However, Tang Xianzong did not succumb, and directly sent Zuo Shen Ce to make Gao Chongwen and Shen Ce Jing xi xing camp soldiers and horses to lead the army to the crusade. In the face of the Shen Ce Army, Liu Pei was repeatedly defeated in battle, and finally became a prisoner and was taken to Chang'an and beheaded.
In the same year, Suiyin Jiedu made Han Quanyi into the dynasty, and his nephew Yang Huilin served as the empress dowager of Jiedu. In the face of the new emissaries appointed by the imperial court, Yang Huilin disobeyed and directly rebelled, but not long after, facing the Hedong soldiers and the Tiande soldiers, Yang Huilin was not an opponent at all and was directly killed.
Seeing that Tang Xianzong was so strong, many of the clan towns were honest, and Zhenhai Jiedu made Li Qi also afraid, so he asked to join the court as an official. However, he was not willing, slowly unwilling to come, the imperial court did not wait for him at all, and war broke out between the two sides, and As a result, Li Qi was killed.
In the seventh year of Yuan He, Wei Bojiedu caused Tian Ji'an to die, and his son Tian Huaizhi was made deputy ambassador and knew military affairs. This boy was only eleven years old and knew anything, so the imperial court took advantage of the contradictions of the fan town itself to successfully recover Wei Bo.
In the ninth year of Yuan He, Huaixi Jiedu caused Wu Shaoyang to die, but his son Wu Yuanji did not report it, but he secretly took over, and the imperial court sent people to hang sacrifices, but Wu Yuanji did not pay any attention to it, which obviously did not take the imperial court in his eyes, not to mention, he directly rebelled.
Tang Xianzong then decided to use troops against Huaixi, after all, Huaixi was located in the Central Plains, with an excellent strategic location, directly threatening the eastern capital. It had been in a semi-independent state before, and now it was directly rebellious, and it was obviously not possible to use soldiers.
In the twelfth year of Yuan He (817), the chancellor and Zhangyi Jiedu made Pei Du voluntarily lead troops to suppress, he and Deng Jiedu envoy Li Yu and others, a large attack on Wu Yuanji, the result was a big defeat to the Huaixi army, Wu Yuanji did not expect the Tang army to progress so fast, the result was not at all defensive, directly captured.
After the reconquest of Huaixi, the various sections of the Tang Dynasty were very afraid, after all, at this time the situation had undergone a fundamental change, the imperial court was in an advantageous position, although there were also those who continued to rebel, such as Li Shidao, Wang Chengzong and others, but they were all successfully eliminated.
Since then, many emissaries have been honest, not only accepting the appointment and dismissal of officials from the imperial court, but even many emissaries have entered the dynasty as officials, and the Tang Dynasty has once again been formally unified. These achievements are known as "Yuan and ZTE".