I actually wish for more work like Ancient Detective instead just paying attention/most of the production fee to well known actors, you can actually invest the amount of money well into production. The mix between crime, wuxia and comedy was surprisingly well, even though I personally wasn't the biggest fan of the love storyline.

Story/production: To me the main plot was really obviously and I already guessed right. But in general imo great production doesn't always need those super plot twists or surprising innovations. if it's just doing a good job. All cases are not groundbreaking but it's doing a decent job holding the suspense and being entertaining.
The cinematography is really good imo (especially the first case) for a not biggest production. The fights are aesthetically pleasing and I liked how they didn't OVerused the flying/strings like most historical or Wuxia dramas.

Acting/Cast: The cast is actually doing a decent job imo.
Music: Fitting OST.

Actually a pity and underrated piece just because not having big names (actors) in it. And I wish the trend is going to change.