I can't remember what led me to this series but glad I watched it. It covers many genres: romance, thriller, action, drama and a bit of science fiction. With 16 episode format, I think this series can be adapted into Korean drama.

What I liked:
1) The writing - This series was well-written and engaging, thanks to its tight running time (16 episodes with each episode lasting 25 to 45 minutes). Even though I figured out the doppelganger, I appreciate knowing the intent behind this doppelganger arc. I also like that 3 supporting characters (Ding Bei Fan, Tian Sui, Jiang Tian Cheng) had substance & played important roles in the storytelling.
2) An Yue & Xu Xi Xi's characterisation - It's wonderful to see contrasting personalities of these individuals but the evil twin wasn't evil all the time. I understood and sympathised her despite the mean demeanor.
3) The romance - For a romantic suspense series, there was good amount of romance between female and male leads. Makeout sessions were hot but my favourite is the first kiss - I was surprised. Yilia Yu and Tsao Yu Ning seemed very comfortable with each other, so the development of their love story seemed natural.
4) Acting - Good acting in particular Yilia Yu, Tsao Yu Ning and Wu Hao Ze. The latter was a standout because he was earnest at playing a newbie in entertainment industry who is attracted to a talent manager that already has a suitor. Tsao Yu Ning did well in expressing different feelings such as desire, concern, anger, love.
5) Action - Wow, the action scenes were impressive. The fights were well choreographed and even the 'blast from the past' scene was good.

What I disliked:
1) The music - I think there are 2 separate English songs used in this series. The lyrics are sound though I would tweak some words of the main song to make it more meaningful. The only thing I cannot stand is the voice. The song is too loud (sound mixing needs to be fixed) and singer's voice doesn't suit the song/moment.

Favourite scene
When the bomb was about to explode