Cinderella's sister is a K drama
Return of the heiress is a C drama
Both are sad stories
I liked them both, though I did enjoy watching return of the heiress more
If you liked return of the heiress then you should try watching Cinderella's sister

They are both historical dramas
Both about princesses whom had to escape the palace at a young age
Both princesses counterattack and get revenge
They are both nice dramas that keep you wanting to know what happens next

Both involve princesses whom had to suffer due to an oracle
They're both worth watching historical dramas

Both are historical dramas
Both have FL and ML that surprise you with their actions
If you liked one you will probably enjoy the other

Both are historical dramas
Both are about a lost/abandoned princess
Both are tragic stories
Both Female Leads are princesses that suffer while trying to find their identity

Both about family betrayal
Both have a strong FM
Both seek revenge
Unknown woman is a K Drama while Return of the Heiress is a C Drama

They're both great dramas
Both Historical
Battle of Changsha is a C Drama, while Queen Seon Duk is a K Drama
Battle of Changsha is more about war, while queen seonduk shows the life of a princess who had to run away.

Story wise they're not very similar, but they are both historical dramas.
Battle of Changsha shows more historical elements, while Scarlet heart is more emotional.
They're both dramas that will take you on a ride of emotions.
Although in scarlet heart there is no War; it shows the mistreatment the fourth prince faced and how he climbed his way to the throne

They are both set in the Joseon era
They are both dramas worth watching.. if you liked one then you should definitely have a go at watching the other.

They are both intriguing and worth watching... if you liked one then you should definitely have a go at watching the other

- high society and creating destiny are both dramas which I personally enjoyed.
- They both have sort of a similar vibe
- In both dramas, the female leads are down to earth
- In both dramas, the female leads refuse to date at first
If you enjoyed one you should definitely have a go at watching the other

- Same female lead
- Both female leads are celebrities, while both male leads are businessmen
- Both dramas are worth watching