I don't really know what is the problem of historical kdramas with endings. I have watched several dramas most of them end in a sad and weird way. I had to rate this 7/10 because I believe that ending is one of the most important part in every tale, series or movie (it's because of it one of the greatest shows of all time, Game Of Thrones, became a joke). Let's take this one as an example, so the empress Ki have beaten all her powerful and ferocious enemies and cleansed the empire from traitors and people who seek heir own desires, and she climbed up gradually to become the empress. After she have finished all the enemies, we then suppose that the empire will become stronger and things will get better. But naah, some rebels who we don't even know their faces, beat Taltal, the master of strategies and plans in the drama who led great army of the empire, and they forced the empress to escape to the North. Ultimately, at the end of the series, they say that this was an imaginary tale of the empress Ki. Since it's imaginary, you could have ended in a better way. I don't know why Kdramas always opt for the most awkward and miserable way to end their series. The thing is, they master plots and scenarios but when it comes to the ending, expect a disaster: either everyone dies, or everything collapses at once. they don't know such a thing as a happy endings I assume