Both of them are historical drama
They both have romance
In both dramas, the leads have AMAZING chemistry
They both are outstanding dramas but they really hit differently

If you like one, you should give a chance to the other

Both have a somewhat strong female lead
Both has four handsome boys
Both has a "bad boy" who becomes nice with female lead
Both has two boys in love with the female lead
Both might or might not give you a mild SLS.

If you like one, you might like the other