I had this on my watchlist for literally 2 years before finally watching, and I definitely don't regret doing so - though there's a few things I'm not too comfortable/happy with.
But, first, lets talk about what I really enjoyed! One thing quite unusual for this kind of chinese dramas: the dynamics within the police team and the positions of each member. Finally a team where the boss is actually a quite funny and chill guy, no strict hierarchy, many funny moments. Also, the FL (who was introduced to the team in the first Ep) didn't need to prove herself first before being accepted and liked (which is basically the case in every other drama like this). Generally , the drama was a quite well executed mix of serious and dark topics/scenes/stories and those lighthearted and funny little moments here and there.
The cases were all written pretty well, many original ideas I haven't seen in other dramas (just speaking of the cases themselves), also more detailed and deep (one case usually takes up 3-4 Eps, yet it's still fast paced enough, I never really felt the need to skip).
I didn't mind the romance part, and to be fair, they kept it quite on the low throughout the whole drama with it considering that it was already pretty obvious from the beginning that both will eventually start to fall for each other.
FL's character wasn't really likeable at first, but she really started to grow on me as she loosens up a lot with time. Also, her outfits were really really pretty!

---- little, but harmless spoiler about the ending ----
Well, I don't mind open endings, especially in those kind of detective dramas, but... here, it was really sloppy and felt really rushed, it seems like they were just trying to fit the whole thing into the last Ep when they could've just easily done one Ep more (judging from the storyline only, of course). It's definitely not that dramatic as I read in other reviews but yeah, they could've focused more on what and who was really important throughout the whole drama and not just the last 2,5 Eps...