Both are romance historical dramas with happy endings. Similar part of plots - evil girl steals identity of the good girl and the main character keeps looking for her.

Same era and historical characters, beautiful love story, awesome music and acting.

Strong female main character, handsome male characters, a bit of magic, lovely romance, adventure. Similar atmospheres.

Strong female main character, handsome male characters, lovely romance, adventure, beautiful world and clothes, beautiful music.
I think the overall warm atmospehere is similar.

Gangsters, undercover cop, cool and smart main hero, unexpected twists.

Gangs, underworld, crime, some romance and a cool main hero doing action stuff.