Drama where the king chooses his concubine

so i was looking through recommendation videos on yt about historical dramas and this video about a maid(?) Idk what status she was, participating to be chosen as the concubine. I'm not sure if it's kdrama since i wasn't familiar with the fl. I didn't get to see the ml since it was refreshed and i lost the video. My history was off :( it's not a new drama probably years ago