Simply put it is:
Modern older girls travel through time to the body of Xia Ziwei's mother, Ms. Xia Yuhe, in "Returning the Pearl", and the history of their struggle in order not to become the tragic character written by Aunt Qiong Yao.
PS: I will write more when I still love this article. I hope it will be the first article that I dig out and fill out.
Now it seems that it may become a trap. If you don't like it, you can click the X in the upper right corner.