So i see this drama get a lot of bad review. First of all, i watch a lot of K-Drama, C-Drama and fantasy is one of my favourite genre. I'm picky and dropped dramas before.
BUT this drama is good. To be honest, after watching like a hundred C-drama, if i see its gonna be long, i know exactly what to expect. Evil side leads, a love what can not come true, and hopefully a partially happy ending. I'm ready for all this, and i don't mind. Of course it would be better with 25-30 episode, but we all know that this is how c-dramas are. They are long. To be fair im so happy to see this 38-40 episode dramas, compare to the normal 56-60.
I think this years best was Love between Fairy and Devil, and its hard to do better, but i think they don't need to. :)

I think the first 15-20 episode is really strong, we have romance and fight, some conflict what actually compare to other dramas are solved pretty quick ( this was a good surprise), but then from 20-30 we have some boring parts what are obviously for more screen time, and maybe because this is also a drama thing :D
i enjoyed the last 10 episode, and cried a lot near to the end. This is a must by these dramas i guess.

There are characters who i loved like He Na, who was truly amazing, as a true friend, who is not selfish and always put the persons he love in front of him. It was heartbreaking and lovely to watch him . I also liked Liu Ning, and i think her story is really sad, but a must and adds a lot to the main storyline.

The 2 main leads are totally fine. I'm not amazed but i do think the way how they portrayed the characters, was loveable. I didn't read the original novel, but i do think they where a good choice to this.

I think the costumes where good, and so the CGI.
I think this drama is worth watching, but i will not rewatch it again. I think this a strong one to watch one time.
The music is heart catching and the songs went strait to my Spotify list.