Watched this series after enjoying First Kisses starring Guan Jin Lin, who acts in this series.

What I liked:
1. Gender role reversal - I love that female lead Lin Wei Xu is state preceptor who is capable of martial arts, while the male lead Fu Su is a hostage/guest that subservient to the female lead.
2. The romance - The kisses and hand biting were hot. There were hugs too. That last scene was cute though wish the director had taken a spicier route. I also like that Lin Wei Xu is forward and frank about what she likes in Fu Su.
3. The plot - Straight-forward and engaging at the same time.
4. Merman make up - Even though merman has blue eyes, white/silver hair and fins near his ears, his physical appearance didn't throw me off.

What I disliked:
1. Master's murder - The motive for murdering the master seems silly.
2. Unresolved mysteries - How did Lin Wei Xu get her cold disease? What actually happened to Fu Su's mum?

Favourite scene
When Fu Su saved Lin Wei Xu from the cold attack