Ryan Cheng stole this one. Except a few crumbs stolen by Lester Lin, Ryan Cheng staged a heist and legit burgled the whole dang show.
THINGS I LOVED:
1) Every scene with Ryan Cheng (or Lester Lin) was captivating.
2) The fight scenes were awesome.
3) Cinematography and set design
4) Costumes
5) Background of story and set up of story

THINGS I DIDN'T LOVE:
1) I love Esther Yu and Zhang Ling He, but the script was not great and many of the scenes were waaaaaaaay to slow. By all accounts, Esther Yu and Zhang Ling He had good chemistry, but weren't given the scenes or the dialogue to demonstrate it. Their interactions were boring after a while (because of the pace and script), which was a shame because you could tell (with their expressions and eye contact) that they gave it their all.
2) Someone said in the comments that every scene was overly dramatic. I co-sign this statement. The panning to everyone's face to see their facial expressions and reactions would've been fine if it had been used as a device for one or two scenes, but it was waaay over used.
3) Not only was it slow, but the show had a huge amount of repetition, showing the same scenes over and over.
4) Also, this was weird: the show did this thing where they'd show a character once and then kill them (someone I'd never seen before or hadn't seen much of) and then do a flashback with that character for 20 minutes where we were apparently supposed to get to know them via a summary of their past and then feel sad about their current death. This never worked. I just fast forwarded these flashbacks after the 4th time this happened.
5) The second to last episode was absolutely nothing but exposition wherein the bad guy spent 45minutes telling us how he did it. That's just lazy storytelling.