At first I feel skeptical about this drama, since I heard that the novel was just another idol fantasy romance. But towards the end, the story become emotionally engaging and the characters become interesting.

Story:
I'm not fond of this kind of story. I feel like the story is too bland, too basic for costume drama. The story that more suitable for audience who was beginner in fantasy idol drama. However, I like most of the characters, especially the mains. The reason why I like them is because they are not intoxicated with love. They still can think of others, their family, friends, despite they have deep attraction for each other. When the trope of mentor-disciple usually fall into passionate love pit, in this drama they really stand for their position as the mentor really guide and teach lessons, the disciple also diligently learning then make her an outstanding one. But, other than these points, I don't think the plot is unique and refreshing. The court politics is shallow, the other characters didn't have an impactful development, the back story of war between races also didn't have depth explanation. So it's hard for me to feel connected to this drama at the beginning.

Acting:
Xiao Zhan's acting always has a big impact for every drama he played. Including this one. At the peak of this drama, his acting was so emotional hence made me unstoppable sob. Although he supposed to be aloof character, but his eye-expression can tell what's in his mind and his feelings. Undoubtedly, he is the soul of this drama and he really can act.
Ren Min's acting also not bad. Her crying scenes was particularly contagious. Instead of her just ordinary face and appearance, she can act well and suitable for her character as cute, smart and kind person. Well, for actors, you really can change your fate with your acting, good actors depend on their act, not only their face.
Aside of the mains, the side characters such as Zhi Yuan and Chong Ming have an interesting part. Chong Ming is cute and hilarious, and Zhi Yuan as the love rival actually likeable and truly a strong candidate to compete Shi Ying's charm.

Production: I think this drama has one of the finest audio visual from all the costume dramas which aired this year. The CGI is top notch and the music soundtracks are all very suitable for the scenes. The costumes too are stunning, specially Shi Ying's ones.

Overall: I recommend to watch this drama until episodes 15 before you decide to drop it. The beginning's pace is pretty slow and not very engaging, and I admit Ren Min's appearance was a little bit bothering, compare to other female characters who were prettier that her. However, as her character grew, she became more likeable and intriguing. Then you'll know why this drama become one beloved fantasy romance costume drama of this year.