Li Mi's contribution to the development of the Tang Dynasty was to mediate the relationship between the royal family, the court and generals, and recommended outstanding civil servants and military generals many times to assist the court in pacifying the Anshi Rebellion and to achieve the Zhenyuan Alliance. ?wait. Speaking of Li Mi's career experience, he went into seclusion many times and was recalled many times. Returning to seclusion for the first time

Li Mi was dubbed the "child prodigy" because of his intelligence since he was a child, and then in 728, he was appreciated by Xuanzong by chance. Later, Li Mi became more knowledgeable as he grew older, but he did not participate in the imperial examination to enter an official career. In 751, Li Mi, who had lived in seclusion in Songshan for a long time, presented Xuanzong with a piece of "The Nine Tripods of Fumingtang". Xuanzong recalled the meeting in the early years and summoned Li Mi into the palace. After entering the palace this time, Li Mi began to be ordered to serve Prince Li Heng. However, not long after, Yang Guozhong, who was favored by Xuanzong at the time, framed Li Mi because Li Mi had written a poem to mock him, and Li Mi went into seclusion in Mingshan. Returned to seclusion again

After the Anshi Rebellion, Prince Li Heng first launched a mutiny in Maweipo, and then ascended the throne in Lingwu as Emperor Suzong of the Tang Dynasty. After Suzong ascended the throne, the emperor who had been served by Li Mi was very aware of Li Mi's abilities, so he began to order people to inquire about Li Mi's whereabouts. After Li Mi came to Lingwu, Suzong consulted him on many strategies for governing the country. It is said that Suzong originally wanted to grant Li Mi an official position, but Li Mi refused to accept it. Therefore, during this period, Li Mi had been coming to Suzong's side as a guest to assist him. Suzong's high regard for Li Mi soon aroused dissatisfaction and suspicion among the powerful eunuchs Li Fuguo and others. In order to avoid being drawn into the power struggle, Li Mi took the initiative to resign when the overall situation of counterinsurgency was basically settled, and then retired to Hengshan. Continuously released to the outside world

After Tang Dynasty Emperor Li Yu ascended the throne, Li Mi, who had returned to seclusion, was once again invited to the court and was awarded the title of Hanlin bachelor. However, Li Mi's behavior that was unfavorable to powerful ministers made him quickly targeted by the powerful Prime Minister Yuan Zai, and then Li Mi was appointed as the judge of Jiangnan West Road. After Yuan Zai was executed for his crimes in 777, Dai Zongfu recalled Li Mi to the capital and planned to give him an important role. However, the new prime minister Chang Gun was also wary of Li Mi, so he excluded Li Mi everywhere. Under his exclusion, Li Mi, who had just been recalled to Beijing, was sent to a local post. Entering the imperial court to worship the prime minister

After Tang Dezong came to the throne, Li Mi officially entered the imperial court to worship the prime minister in June of 787. During his tenure as prime minister, Li Mi carried out reforms in both the internal and external government affairs of the Tang Dynasty. In terms of internal affairs, Li Mi actively reconciled the relationship between royal family members and court officials to avoid civil strife in the Tang Dynasty. In addition, Li Mi also successively recommended Han Huang, Wang Wei and other people with lofty ideals, and these people later became famous officials in the Tang Dynasty. In terms of external affairs, Li Mi took the lead in promoting the "Zhenyuan Alliance". This alliance was concluded by the Tang Dynasty in conjunction with the Uighurs, Dashi and other countries to resist Tibet. Its conclusion largely maintained the stability of the Tang Dynasty's borders.