Liu was always raised by female prisoners in prison, but he almost died when he was a child. After the witchcraft storm passed, Emperor Wu of the Han Dynasty seemed to forget his great-grandson who was still in prison and ignored him. Prison officials were very sympathetic to the child and sent two female prisoners to raise him. He also grew up in prison. On one occasion, a feng shui master said that there were people in prison who looked like emperors. When Emperor Wu of the Han Dynasty learned about this incident, he was very alarmed and ordered all prisoners in the prison to be killed. Finally, under the protection of prison officials, he was not killed. On the contrary, every dark cloud has a glimmer of hope to be valued by Emperor Wu of the Han Dynasty again.
On his deathbed, Emperor Wu of the Han Dynasty finally brought Liu's illness into the royal family tree, which provided him with a superior growth environment. Because of the hardships of his childhood, he not only has a tough will, but also has social experience that ordinary nobles do not have, which is of great benefit to the shaping of his personality. After Emperor Wu of the Han Dynasty, there were two emperors, one died early and the other was fatuous, and his reign was extremely short. Liu Si was highly valued by ministers because of his excellent moral character, excellent command ability and understanding of people's lives, and finally he was unanimously elected to the throne. He became the third emperor after Emperor Wu. During his reign, he worked hard and was deeply loved by the people.