What is the historical prototype of Xia in Princess Zhu Huan?

The historical prototype of the princess in the summer is the daughter of Su, Chunhui Emperor Guifei. Gave birth to two sons and a daughter for emperor Qianlong. This daughter is the prototype of Wei Zi. Later, she married the son of Fu Heng, a college student. In Yongzheng 13, Emperor Guifei of Chunhui gave birth to the third son for Emperor Qianlong, which was the first child for Emperor Qianlong. Judging from the fertility status of Emperor Chunhui's imperial concubine, she is quite loved by Emperor Qianlong, and she is also regarded as a woman loved by Emperor Qianlong.

The historical prototype ending of the princess in Xia's works

Until she was seriously ill and dying, Qianlong didn't know why, perhaps because she remembered Chunhui Huang Guifei's kindness to him and their feelings for so many years. So, at this time, Chunhui Emperor Guifei was named imperial concubine, and she died shortly after she was named imperial concubine. Emperor Qianlong had a love for Chunhui Guifei, but it was not his favorite or deep love. When Chunhui Guifei was old and faded, Qianlong's love for her slowly disappeared and was finally forgotten.