The prototype of Zhen Xuan is Niu Kelu's Reiko, but the name Reiko doesn't exist. In ancient times, most women with good families didn't know their first names, only their surnames. Niutuilu's family is named Fei and Guifei, which is correct.

Maybe Li Hong's words belong to Niu Kelu and the emperor's own children, not Niu Kelu's adopted son. Those are two jokes.

Niu Kelu got married when he was a child before Yong Zhengdi ascended the throne, and he was not born a female student in both plays.

There is no emotional connection with the 17th report, let alone helping 17th give birth to twins. Although there is an emotional connection in Palace 2, there is nothing out of line between them. During the days when Reiko left the palace, she only promised to be a nun for her children, and not to marry the 17th prince, and the latter two returned to their places. At this point, Gong Er is more in line with history.

There is also that Niu Kelu is not favored at all, otherwise he would not say that he has only given birth to Li Hong's children after so many years of marriage. In Empresses in the Palace, Zhen Xuan was so favored that she was able to give birth to three children after more than one pregnancy, which is also inconsistent with history.

Brother Liu's biological mother is concubine Liu, isn't she.

In addition, Nian Fei was indeed favored in history, but Nian Fei actually gave birth to several children to the emperor, but all the children died early, which does not mean that there were no children in the play, and in real history, the emperor didn't let Nian Fei have children because he was afraid of General Nian, just as the play said.