Four years later, she was promoted to the title of Rong Fei, but Rong Fei's honor seemed to stop there. Twenty years after Kangxi, Rong Fei failed to be promoted again, which made many historians wonder why. Rong Fei was the first concubine to accompany Emperor Kangxi, and gave birth to five sons and a daughter for Emperor Kangxi, but only the third son of the emperor could grow up, and everyone else died. Perhaps it was the early death of the emperor's daughter that made Rong Fei see through the intrigue of the harem early, while Rong Fei obviously had no intention of fighting for power and profit.
Extended data:
Ma Jia became an honorary concubine in August of the sixteenth year of Kangxi, and was promoted to an honorary princess in December of the twentieth year of Kangxi. Rong Fei should be very favored during the period from six to sixteen years of Kangxi, especially from twelve to sixteen years of Kangxi, when emperors and daughters were born every year. However, twenty years after Kangxi, when Rong Fei was alive, for some reason, it was not sealed again. Rong Fei died on March 6th, the fifth year of Yongzheng, and was buried in Princess Jingling Garden on December 4th.
The TV series Lan Qier is the daughter of the fictional Rong Fei and Emperor Kangxi. In the TV series, the identity of Rong Fei's daughter Lan Qier changed like this: at first, she was not even Gege, and later she was named Lan Qier Gege. When she married Ge Dan, she was awarded the title of Princess Heshuo. This is just the need of the plot. In fact, since her mother is a concubine, she should be a Heshuo princess from the moment she was born. Emperor Kangxi never married his daughter to Gerdan in history.
Reference: Baidu Encyclopedia-Rong Fei