Recommendations

If you admire Ha Ji Won in beautiful historical costumes, as well as portraying complex characters, then Hwang Jin Yi (2006 drama) is a must watch.
Similiarities:
=> actress Ha Ji Won
=> Ha Ji Won characters undergoes a lot of training to become a beautiful woman
=> The beautiful costumes that shows Ha Ji Won's characters' beauty
=> story is both about a woman who has to overcome the pain in her lovelife to become the best as she can be
=> Not really the same but can be comparable: If Empress Ki has fighting Ha Ji Won, Hwang Jin Yi has dancing Ha Ji Won
=> the beautiful way in which Ha Ji Won expresses her characters complexities in both dramas.
=> From what I know, these are the dramas that gave Ha Ji Won her Daesang (grand award) for the yearly tv station awards (Empress KI-MBC, 2013; Hwang Jin Yi-KBS 2006).

A historical drama featuring a star-crossed love triangle starring Ha Ji Won. The stories may be quite different but if you watched Empress Ki or Damo, and liked either of them really well, you must obviously have become a Ha Ji Won fan because since she's the lead of both shows. Therefore, I am recommending Damo to Empress Ki fans and Empress Ki to Damo fans. Both dramas feature Ha Ji Won as an orphan poor girl who has to overcome a lot of trials in her life. Both dramas are also her sageuks where she shows a lot of swordfighting and other action skills. Also in both shows, it appears that she had always loved a man who is kind and caring, but somehow became drawn to another man who she was not supposed to love. The love triangle in both dramas have great effects on Ha Ji Won's character since they both have/gave her something very important to her.
I suggests fans of either dramas watch the other since Ha Ji Won is fantastic in it. Also, because Damo was such a great drama for its time in 2003 but is somehow currently ignored because of so many newer dramas.

Detective, cops, justice, injustice, power, struggle, help, inner self, heart wrenching, crime, poverty, gangs, useless police, trap

Fatherly love, pure innocent young daughter, bad society, poverty, struggler, helping hands, corruption, injustice,

Fatherly love, young pure innocent daughter, poverty, struggling, society, injustice, crime, corruption, useless police, helping hands

Pure innocent young girl, poverty survivor, justice, injustice, crime, gang, love, heart touching, strong will, bad cops, will to live,

Pure little girl, poverty, survivor, society crime, good cop, justice injustice, fight, faith, love, care, help, relationship, strong will,

Father daughter love. Poverty. Victim of society crime, strong will, survivor, justice, faith, strong bond, pure little girl

part of the same series so it goes without saying that they're pretty similar. genres: action, adventure, fantasy, archaeology, etc

part of the same series so it goes without saying that they're pretty similar. genres: action, adventure, fantasy, archaeology, etc

both archaeology team raiding tombs, coming across fantasy type creatures, the undead, mummies, etc etc. genres: action, adventure, fantasy, archaeology, etc

both archaeology team raiding tombs, coming across fantasy type creatures, the undead, mummies, etc etc. genres: action, adventure, fantasy, archaeology, etc

part of the same series so it goes without saying that they're pretty similar. one is movie, the other is tv show. genres: action, adventure, fantasy, archaeology, etc

part of the same series so it goes without saying that they're pretty similar. genres: action, adventure, fantasy, archaeology, etc

part of the same series so it goes without saying that they're pretty similar. genres: action, adventure, fantasy, archaeology, etc