The entire plot of this relies of a western kingdom having eastern court rules and concubinage similar to the many chinese dynasties
It's been extremely overdone, and I personally don't like it since it's stupid and contradictory. Why not just add in confucian thought in there too?
One could say that it's fiction, but at the same time, if lord of the rings had Frodo travelling around in a toyota hilux I'm quite certain that most would have a problem with it