Make a Monster for the Concubine

(Two heroines/no rebirth/no golden fingers/no through-the-book) Shen Jiaoyao, the beloved concubine of Emperor Chen of the Xi Kingdom. Bai Zhiyi is a talented person who has just entered the palace. A person fell in love with someone for a lifetime because of a promise he made when he was young, but eventually his love faded and he died... A man was forced to enter the palace because of his family's entrustment, and finally ascended to the throne...