I’ve also read the novel and must say that so far, the ONLY thing the drama has in common with it are a few character names. Everything else is completely different:
- no Pei Dafu, this entire storyline is new
- everyone’s positions in life are different, in the novel Yunxi is a prince, the emperor’s brother, raised in the palace, and is suffering from a magical cold poisoning that makes his body turn to ice
- FL is not the daughter of a small scholar, but of a much higher ranked aristocratic court official, and her mother died when she was little, there is no disability storyline and no mother wanting revenge, no Yuwen dare, etc. (it’s later discovered she has no blood relation to her family and is actually a princess, her real family was wiped out by the empress dowager)
- FL has returned to her young body after being killed by her sister and by her husband, a minor prince
- the main villains are the Empress Dowager, the 7th Prince competing with the young crown prince, and the minor prince who married the FL in her previous life, none of whom have even appeared in this drama
- in the book, FL constantly outsmarts everyone and doesn’t need anyone else’s guidance
- the female assassin has zero close relationship with the FL, she is only briefly hired to teach her some self-defense moves
In short, literally everything is different and the characters, their personalities, relationships, goals, and history are completely different, as well. I like both the novel and the drama, but see them as two separate stories that have nothing to do with each other.