Find a novel with a three-word name

The male protagonist is a prince of a country, very powerful, and has two surnames.
The female protagonist took a drug that could change the color of her eyes or hair and seal her ability (it seemed to be a predestined ability)
Is the female protagonist the right king of another country or something? Is the god of war as famous as the male protagonist, but the male protagonist is the female protagonist
And the blood of the heroine can cure a kind of poison. The heroine's friend was poisoned by that poison, and that person found the heroine to help cure the poison.
The female protagonist saved him. Later, the female protagonist and another woman were poisoned at the same time. The woman was dying, but the female protagonist was fine.
The male protagonist thought that the female protagonist had poisoned her and then forced the female protagonist to detoxify, but he did not know that if the female protagonist saved her, she would die.
The female protagonist asked the male protagonist who was more important between her and the woman, but the male protagonist coldly said that the woman was more important, and then the female protagonist saved the woman.
The name of the book is three words, ancient fiction. It seems to be a series of five or so
That's all I remember
It shouldn't be very long. It should be a Taiwan writer. I only remember the name. It's quite nice. There are many fragments of the content, but I can't remember the names in it.

Answer 1

You didn't provide enough information for me to find the novel you wanted. Please provide more context or description so that I can help you better.