Pros:
-Master(Team Leader Xu) and Apprentice(Dayu) have great and endearing chemistry.
-Good ending - love the hug and team picture and there is also a heartwarming extra after the credit rolls that give a closure to Master Xu's personal knot
-Loveable crews from the police station - Qi Ran, Xu Dong, Yi Fei, Xing, Yuan Ju
-Good soundtrack team. The montage background song for Master-Apprentice pair especially fits well with them.
-Comedy is ok especially on the earlier parts.
-No complains on the actors, i think both MLs did well and engaged in their roles nicely. Although both are not visually pretty men, I found LYS attractive in a fitter bod and 'cold outside-warm inside' persona here and LYT is cute in a boyish way, both can be likened to a cat and a big puppy eyed dog.

Cons:
-Crime detection parts are too plain and mediocre! Most of the time the perpetrators confessed willingly by themselves in the interrogation room! and most of the crimes happen to someone related or who have met ML#2 Dayu lol
-Da Yu and Tang girl love line. They took a lot of screentime but feel so cliche and redundant and don't
contribute to their chemistry.

Honestly it's a bad crime suspense drama with cringeworthy plots but passable as light hearted comical cop drama. However the Master-Apprentice part did shine well with nice bromance chemistry which at times nearly crossed the BL line but didn't. (Both ML have girlfriends in the drama and their relationship is purely master/apprentice/colleagues/partners).