Two dramas are similar as:
1. The male leads are military generals with significant power in both dramas.
2. Female leads are orphans.
3. Both FLs are quick-witted, independant, strong and rather smart.
4. Both main couples has a bickering relationsjip at the beginning with traces of going from hate to love and support.
5. Both male leads are strong and persistent with cold demeanor showed to the outsiders.
6. Both dramas depicted fictional historical setting with slow burning romance keeping the similarity in genres.

Both dramas are similar beacause in both dramas:
1. The male leads are courtiers with military power and also involved in the power struggle.
2. Female leads are partially orphans who were forced to marry in to the ML's family by the schemes of of their relatives to win the favor of the MLs' family.
3. Both FLs are quick-witted and geniuly smart.
4. Both main couples has a bickering relationsjip at the beginning with strong MLs present and independent FLs pictured.
5. Both dramas depicted fictional historical setting with slow burning romance.
6. Both series have very similar genres.