Can you recommend a novel where the female protagonist and her friend visit a certain place at the beginning of the story and then travel together, but then they separate?

I want the name of a novel... At the beginning, the female lead and her friend traveled together when they visited the place. Although they had transmigrated together, they were separated. Later, the female lead entered the palace as a concubine, and the emperor already had a princess (daughter). Later on, the female protagonist also gave birth to a son. Later on, when the female protagonist became pregnant again, the female protagonist somehow made herself a bowl of abortion medicine to drink. Because the medicine was too strong, she could not have children in the future. In the end, the only child of the female protagonist died (the child had poor immune system). Later on, during a large-scale royal ceremony, the female protagonist's friend fell from the sky in red and fainted. Then, everyone treated the female protagonist's friend as a saint. Then, the female protagonist and her friend recognized each other and kept writing letters in Pinyin. It was because the ancient people could not understand Pinyin. Later, the female protagonist's friend even had an emotional entanglement with his highness…In the end, the Emperor pulled the female protagonist and the supporting actress together in the main hall (the location was unclear) and announced something, meaning that the two of them were on equal footing... Because the female lead was infertile and had no children, she could not be crowned empress... In the end, I don't remember if the supporting actress was named the queen... I only remember so much of the plot. Does anyone have an impression of it? Please give me the title!

Answer 1

At the beginning of the novel, the heroine and her friends visited an ancient temple and inexplicably traveled to an era without historical records. Although they transmigrated together, they soon separated. I hope you like this fairy's recommendation. Muah ~😗