Li Longji's miserable life in his later years can be said to be "self-inflicted", that is, because of the "death of Yang Guifei" incident. Before the Tongguan War, if it weren't for Li Longji's command at the critical moment, not only Chang 'an could not fail, but the rebels who were already in a decadent state would probably stop early. However, Li Longji lost Chang 'an and took his beloved princess and Manchu officials to the road of escape. This made the angry guards feel sick, and Li Longji had to kill Yang Guifei in exchange for peace.

However, if it was only because of the fall of Chang 'an, it would not be like this. The most fatal reason is Li Longji's decision in Chang 'an. At that time, he became a frightened bird, and all the ideals of mountains and rivers were gone. He wants to go to Shu in his heart. After the farce, he ran out and went to Shu to hide, throwing all the broken pavilions to the Crown Prince (Tang Suzong) who ascended the throne in the war. It can be said that Li Longji's pot at the critical moment was irresponsibly exchanged for the life of his next "emperor".

In fact, when Li Longji first became emperor, Li Longji had a good life. Although there is no power, after all, in Shu, far from the front line, everything is respected and life is relatively free. Under the overall planning of the new emperor Tang Suzong, the front line was also widely spread. However, in the days after Ansheng, Li Longji did not stop acting, but was seriously dissatisfied with Tang Susong's authority and ordered his own troops. He also sent officials to compete with his son for the right to speak many times.

But what is the use of his? Tang Suzong has mastered too much power to fight for him. Li Longji two people had a quarrel, and a good counterinsurgency struggle turned into a quarrel. The gap between father and son is growing. It can be said that Li Longji is enjoying the future of his old age, and basically he is more and more blocked in this chaotic struggle. So when the Tang Dynasty recovered Chang 'an, "Emperor Li Longji" moved back to Chang 'an from Shu and arrived in Fengxiang, where he was arranged by Tang Suzong in Xingqing Palace. Although the feud between father and son was deep at this time, Li Longji was able to continue his free activities at this time, Xingqing Palace was tired of life, and sometimes he often went for a walk in Daming Palace or Huajingchi.