Surely a masterpiece you should watch if you like historical dramas.
It is one of the most complete drama I've watched so far.

The romance is nice, realistic and definitely convinced me.
The politic plots were interesting, got all my attention caught during the fifty one episodes.

The main actress honestly is behind the success of this drama. She is everything insipid. I found her strong. I found her weak. I found her loved and loveable. I found her cruel and nice. Ambitious. I found her very realistic.

Don't be afraid of the 51 episodes, the time you'll spend watching it worth it.