Through the spoiler of the main characters in the play, everyone knows the true identity of Tian Ji, who will later become Chu Huaiwang's favorite concubine. It's really hard to say about the historical prototype of Tian Ji. Why? Because in Chu Huaiwang's harem concubines, there is no woman named Tian Ji. Historically, Chu Huaiwang's harem had four concubines. They are Nangong Nanhou, Gong Bei Qurong, Donghong Tianhui and Nishimiya Yingying. In addition to these four concubines, there is also a favorite concubine, Wei's. That is to say, except that the name Tian Hui sounds related to Tian Ji who sings in the middle of the month, no one else can be from Tian Ji.
In the play Beauty, only two concubines did not appear in Chu Huaiwang harem, one was Qu Rong of Qu Family, and the other was Tian Hui of Qi State. How could QuRong be Tian Ji? Therefore, only Tian Hui is the most suitable person for Tian Ji's identity.
Tian Ji is a gift, that is to say, on the surface, she is from Qi. Tian Ji and Tian Hui are the same. Their surname is Tian. Furthermore, Tian Hui's position in the harem is very high, and Tian Ji is deeply loved by Chu Huaiwang, so her position in the harem can't be very low. Based on the above factors, I think the historical prototype of Tian Ji is Tian Hui, Princess of Qi.