I told my friends, and also told the world, the great shame I suffered because of Li Ling's disaster, poured out the long-simmering pain and resentment in my heart, boldly exposed the selfishness of the court minister, and even publicly revealed my dissatisfaction with Emperor Wu of the Han Dynasty. He was clear from right and wrong, despicable and ungrateful. The letter also euphemistically described the difficulty of "enduring life" after he was sentenced. In order to complete the book Historical Records, Sima Qian endured humiliation and ridicule beyond ordinary people's imagination. But he has a very firm belief that death is valuable and "more important than Mount Tai". Therefore, if you don't finish writing historical records, you must not die easily, even if you are misunderstood for a while. It is this belief that supports him to survive tenaciously in the painful struggle of "nine ileums a day", endure humiliation and perseverance, and finally realize his long-cherished wish and complete the great cause.