Although both dramas could be considered vastly different and have different vibes, there are similar elements.

1. Female leads who gain strength through diversities to reach their destinations.
2. Strong lead chemistry.
3. Second male lead develops feelings towards female lead.
4. Supporting characters who make unexpected sacrifices to aid lead female.
5. A bittersweet ending.

I recommend these dramas if you liked either of them. Princess Wei Young is slightly more romantic and typical historical drama while Bloody Romance is unique and stands alone from others I have seen while still having a similar love story.