Guo Ziyi was a famous general in the Tang Dynasty. His achievements and prestige were very high. He once made great achievements in the Anshi Rebellion, was named the "Anxi Jiedu Envoy", and became one of the important generals of the Tang Dynasty. However, because his prestige was too high, Tang Daizong had doubts about him and worried that he would rebel. As a result, Emperor Daizong of the Tang Dynasty took a series of measures to weaken Guo Ziyi's power, including retiring him and reducing his military power.

In order to avoid being harmed, Guo Ziyi adopted a variety of disaster avoidance strategies. One way is to "know people and avoid trouble", that is, to protect yourself by making friends. For example, he once had a good relationship with Yu Chaoen, but when Yu Chaoen invited him to visit Zhangjing Temple with him, even the prime minister Yuan Zai at the time was afraid. He knew that there was no harmony between Guo Ziyi and Yu Chaoen, and Yu Chaoen repeatedly He made slanderous remarks to prevent Guo Ziyi from being reused. Therefore, Yuan Zai sent his subordinates to advise Guo Ziyi not to go.