I enjoyed but didn't love love this show.
The problem (for me) was the lack of chemistry between leads, the FL's acting & facial expressions were off especially during intense battle where she had kind of a half smile on her lips while attacking (not a cool smirk, btw, just a weird smile), which always seemed out of place, and also the writing of the FL's character... she was supposed to be a bad ass swordswoman/martial arts, second to only the ML in skills and yet she was ALWAYS getting her ass handed to her and having to be rescued.
Why SAY/ACT like she was supposed to be amazing after those 3 years only to let all the mediocre bad guys always win over her without the ML's help? Not. Cool.
Finally, I hated the character arch for several of the side characters. Too many went to the "dark side", got kill needlessly, or made decisions at the end that didn't make sense at all based on the story up to that point, but... I held out through 20 too many episodes to see the end.
The show was good/okay. The fight scenes were great. I don't regret giving the show a try, BUT I would never waste my time watching it a 2nd time. If you want a show with a similar feel, watch THE FLAME'S DAUGHTER (which I loved) & skip this one.