Mi Zhu was the first daughter born after Chu Wei, the then queen Qin Huiwen, Mi Yue's half-sister, and Mi Yue's rival in love since childhood.

The prototype of Mi Fei is Huiwenhou in history. In 334 BC, Huiwenhou came to the State of Qin to marry King Huiwen of Qin, known as Mrs. Wei. In 329 BC, Huiwenhou and King Huiwen of Qin gave birth to Qin Wuwang.

In 307 BC, Qin Wuwang died of lifting a tripod. Because Qin Wuwang had no children, his younger brothers competed for the throne. After Huiwen, he supported Gongzi Zhuang and arrogated to himself the three gentlemen. However, with the support of Wei Ran, who held the real power in North Korea, Qin succeeded to the throne and became the general in charge of the capital. In 305 BC, Gongzizhuang and Huiwen were executed.

There are two versions of Mi Fei's death. First of all, Huiwen died before Qin Wuwang, which is considered as a disease.

The second is that after Qin Wuwang's death, Huiwen wanted to establish Gongzi Zhuang as the monarch. After Gongzi Zhuang was killed, Huiwen died of depression.