The stories are similar due to its main characters and the historical aspect.

The female character are of low birth but end up falling in love and marrying the king or emperor and even though she encounter a lot of evil women who are also vying for the king or emperors favor she doesn’t let anything bring her down and remains true to herself.

The male characters are a king(Dong Yi) and an emperor( Queen of Han) who fall in love with women they shouldn’t love but do everything they can to keep them by their sides and protect them from other women in the harem.

Both stories are very good and have a few similar aspects but amongst the two Dong Yi is my favorite.