Not very good at all. I don't see what the big deal is. The story was very unrealistic. Sloppy action scenes. Lazy script. Villians were sissies. Lee Yoon Ji was pretty much the redeeming feature with her acting. Ha Ji Won did a great job in Empress Ki. One of her better roles.
I will agree that the script and story was sloppy in some places. The acting was A- though. The general/regent's acting was not that great. I did see some editing errors but overall it's a wonderful drama. I have watched Empress Ki 2 times in a row now and gets better.
Last episode. So sad too see it go. I had tears through most of it. The people that worked on this really deserve a lot of respect. This is one of the best ever made.