What does the third part of Princess Pearl mainly mean? What is the final result?

The third part is the real ending, because history cannot be changed. In history, there was a Fujin who gave birth to a son, so painting must exist. Mei died young, so Xiaoyan and I left the palace in the play. The earthly world refers to the feelings of Wei Zi and Er Kang, and the twists and turns of Xiao Jian and Sunny. Many people say that the third film ruined the beauty of the first two films, but this is a fact that must be stated.