The Goryeo-Khitan War

At least up to episode 16, the story was pretty good, and it did follow most of the records shown in Goryeosa between the year 1009 and 1011. However, starting from episode 17, the story became rather disappointing and rushed, even to the point that the original author of the story criticizing the show for not following the actual historical records (which is indeed true). I really liked this show, but I believe it should have ended at episode 16. It lost historical accuracy after that, which made me feel regretful of even watching the series in the first place. I do have to say that the actors' performance are overall pretty good though. Too bad their abilities are wasted here.