When Emperor Wu of the Han Dynasty had a private chat with the Prince's biological mother, Queen Yang Yan, he repeatedly mentioned this issue. What Queen Yang wants is how to prevent her son's inheritance from being taken away by others. The scheming woman did not deny her son's stupidity, but moved out a famous saying handed down from the Confucian classic "Ram Spring and Autumn" to defend her son: "How can you set up another person with your strength?" Therefore, Emperor Wu had to be silent. Weird, he has no courage. However, Queen Yang is still not at ease. In the tenth year of Taishigong (274), when she was dying, because she saw the funeral that Emperor Wu loved, she was afraid that the funeral would become a queen and endanger the prince. She leaned her head on Emperor Wu's lap and said with tears, "My uncle's daughter Yang Zhi is very good in character and appearance. I hope your majesty will take her into the harem and wait on your majesty for me. " Emperor Wu was very moved and agreed on the spot.