Before answering this question, let’s take a look at a story. It is actually a real story. It is a real story:
famous Peking Opera master Mei Lanfang original wife Wang Minghua After giving birth to a son and a daughter, in order to accompany her husband who performed in various places, or to be worried about her husband, she resolutely underwent sterilization surgery. Unexpectedly, an infectious disease, a pair of children died one after another, and Mei Lanfang was in danger of "defeating the last".
so, Wang Minghua agreed, even encouraged and supported her husband to take a concubine, and married Fuzhifang as the side room, and was commensurate with Wang Minghua's sisters, and was not named as a side room concubine. Fu Zhifang gave birth to nine children for Mei Lanfang (five of whom died young), and he has always been very harmonious with Wang Minghua.
After learning about this history, let’s look at the relationship between the Queen, Qi Fei , and Hua Fei . Isn’t it a bit similar? Empress Chunyuan and Empress Yixiu's son both died young, Yongzheng has no son, which is a huge thing in the royal family! Even because of "no heir", even the qualification to inherit the throne will be weakened.
If Yongzheng (who was still a prince at that time) could be the emperor, should be repaired and become the queen. This is a matter of rising. Yi Xiu is not a love mind: "As long as a man and wife are in love all their lives, he would rather be an emperor than be an emperor." So she will definitely try her best to support Yongzheng in the fight for the crown prince. By the way, she also hopes that Yongzheng can have children.
But she can't have children anymore. And there are also "love rivals" like Hua Fei who are young and beautiful and have a strong family power. In addition to Concubine Hua, there is also Concubine 1 Concubine Jing Concubine Duan. In the future, there will be other younger and more beautiful concubines entering the palace. If they were allowed to give birth to children, their sons might threaten Yixiu's throne of queen because of their mother's nobleness.
In comparison, letting Concubine Qi, who has no IQ online, give birth to a son, which has many benefits for Yi Xiu, but few disadvantages are negligible.
Why can Concubine Qi safely give birth to the third prince under Yixiu's nose? Because Yi Xiu needed Concubine Qi to give birth to a son!