Translation: Jichang, a Xibo nationality, interpreted Zhouyi in the detention center; When Confucius was in trouble, he wrote the Spring and Autumn Period. Qu Yuan was exiled before he wrote Li Sao. Zuo Qiuming was blind, so he got Mandarin. Before Sun Tzu's Art of War was written, Sun Bin's kneecap was amputated. Being banished to Shu, Lv Chunqiu was circulated in later generations. Han Fei was imprisoned in the state of Qin, and wrote "Say Difficult" and "Lonely Anger". Three hundred poems, mostly written by some sages out of anger. These are the reasons why people are depressed and unable to realize their ideals, so record their past deeds and let future generations know their aspirations. Just like Zuo Qiuming lost his eyesight, Sun Bin broke his foot, and finally he couldn't be reused, so he retired to write a book to express his grievances and wanted to leave an unfulfilled article to show his true intentions.