After Liu Bang ascended the throne as emperor, he suddenly remembered the son he shared with his first love, Widow Cao, so he quietly went to Pei County to find it. The two were very excited to see each other, and after a night, Liu Bang said with satisfaction: "Come into the palace with me, there will be endless glory and wealth in the future." However, Widow Cao knelt down and said, "Take your son away, I don't want to go into the palace with you." Liu Bang was taken aback, not expecting her to refuse. In history, Liu Bang's first wife was not Lu Pheasant, but a widow, as early as when Liu Bang was still the head of the Surabaya Pavilion, he started a relationship with Widow Cao. Widow Cao was just an ordinary village woman, her husband died young, and she ran a tavern on her own. Liu Bang often went to take care of her business, and the two gradually got acquainted. After a long time, Widow Cao discovered a strange phenomenon, whenever Liu Bang patronized, the locals flocked to the tavern. Widow Cao's business also prospered as a result. She understands that this is inseparable from Liu Bang's good popularity, and she is grateful. The two drifted apart, and Widow Cao gave birth to a son named Liu Fei. Later, Liu Bang became attached to the Lu family and married Lu Pheasant, and the Cao widow was forgotten.
In 205 BC, Liu Bang and Xiang Yu fought a battle at Pengcheng, and due to their hasty underestimation, Liu Bang's army was defeated, and he, Lü Pheasant, and Cao's widow were all taken prisoner. Widow Cao found that Lu Pheasant was completely different from ordinary women in prison, and she did not say a word about the torture, which made Widow Cao feel awe. This laid the groundwork for the future. In 206 AD, Liu Bang was officially proclaimed emperor and remembered Widow Cao. As an apology, he took his entourage to Widow Cao's house and wanted to take her to the palace. However, Widow Cao politely refused. She knew that if she entered the palace, she would become Lu Pheasant's enemy, and it would inevitably be bloody. Widow Cao looked at her son in her arms and couldn't bear to abandon it, and finally decided to entrust Liu Fei to Liu Bang and let him enjoy a rich life. As for himself, he stayed in the deep mountains and wild villages and lived alone.
Although Liu Bang was puzzled, he complied with Widow Cao's wishes and brought back his own son Liu Fei. After Lu Pheasant learned about it, he felt that Liu Fei's family had no ambition, so he let down his guard. After Liu Bang's death, he was succeeded by Lü Pheasant's son Liu Ying. Widow Cao was glad that she did not enter the palace and was spared a tragedy similar to that of Mrs. Qi. As for Liu Fei, he had some festivals with Lu Pheasant. In the second year of Liu Ying's succession, Liu Fei sat first in the court, which caused Lu Pheasant to be dissatisfied. Lü Pheasant managed to poison Liu Fei, but Liu Ying saw through the conspiracy and let Liu Fei get out safely. In order to save his life, Liu Fei followed the advice of his advisers and offered a county to Lu Pheasant's daughter, resolve the conflict with the Lu family, and get out safely.