How can I explain this.
The acting was honestly how do I say annoying. I can't tell if it's the writing of the fact I'm watching this literally 20 mins after finishing the rise of the Phoenixes(which is basically the same princess lose kingdom but that's where it split off yet somehow that fallen princess was abhorrently annoying). That I can't take certain things like the actors showing sorrow by repeating a character name. Honestly if you were to take a shot everytime the female lead say a name for the second time in a row and every time after you would be dead/or a liquor company is going out of business. Not to mention the dialogue never gets clever. There was maybe 1 moment where they had good banter.

Character:
Are absolutely 1 dimensional. I seal clapped on the scene where the female bodyguard didn't beat the big prince. The female lead is insufferable, I get she didn't grow up in the typical royal family where members were being murdered off but still was she not taught the history of the royal families and no I don't accept the she is a woman excuse when she was able to study and practice medicine. So the fact that even after she watched her parents murdered she still didn't know the first rule of treason trust no one after it's been committed. Not to mention she literally started out wanting to get revenge but then gave up and started palace fighting in a different country. Not to mention she doesn't even remember she has a brother whose whereabouts are unknown. She a horrible female lead who I relate better to a plank of wood. Male lead is not annoying he just not my cup of tea, I don't see how he fell for her. Honestly I understand how the prince of Han fell for her she was actually able to treat his seizures, not only that but he saw her impact on the people first hand, that was the better story, actually never mind he is to stupid to tell his mother that she is skilled in medicine and can treat his illness. But somehow we have the prince of Shu who just kinda seem like he is a literal puppet prince, his only motive for getting the crown back was because he originally had it. He only went to Chu because plot, he only develop feelings because plot. Hell she spent as much time with him as she did the oldest food in the palace.
I almost forgot the scene where she became irredeemable, the Phoenix hair pin situation, all she had to do was bat her eyes at the Prince to get it, but no she went about in the stupidest way possible and no that doesn't make her a strong independent woman, that makes her a stupid, naive, should be feeding the pigs by now woman. Honestly I can say the scene where the "Big prince" was in the tea house with the female lead was pretty bad since I can see why he did it (I not say it's right) because seduction is a tool and she would be in worst situation if you know this show didn't use that scene as just an ick factor to make you pity the female lead.

Which leads into my other issues the tone is horrible honestly it goes from a "comedic" scene to a "pity us" scene and I say that it's a pity us scene only because all it's supposed to is make you pity the characters, since you have no emotional connection because this show doesn't understand how to have real emotional beat. All the way to a scene I guess was important to the plot but isn't. Honestly I'm just shocked at how horrible the pacing is for 45 episodes and I know that on the low end but still it's like they skip over important plot points while dully spending way to much time on others we didn't need to watch the entire paintball fight.