What was Zhen Fu like in history and why was he executed?

Zhen Fu is a virtuous woman, who never quarrels with xelloss, and is also very polite to his wives. And gave birth to the later Cao Cao in Wei Mingdi, but xelloss's obsession with Zhen Fu didn't last long, so he shifted his interest to a woman named Guo Nvwang, who was two years younger than Zhen Fu and three years older than xelloss. However, in the process of assisting xelloss to ascend to the throne, Guo Nvwang has repeatedly made strange moves. Later, Zhen Fu angered Xelloss by complaining too much. In June of the second year of Huang Chu (22 1), Cao Pi sent an envoy to Zhenguan and died, and was buried in Yecheng. It is said that he covered his face with chaff when he was buried. At that time, Cao Pi asked Zhou Xuan, a warlock, to interpret dreams. Zhou Xuan replied: "There must be a noble woman who died unjustly." Xelloss smell speech regret, send someone to recover the angel of Zhen Shiyin's death, but things are not so easy.