With side story of a court eunuch and princess Fukang of the Song dynasty.
https://youtu.be/X8PBbc_aUkA

Similar story line with a spoiled and infamous princess who is out to tease and woo the imperial inspector with a reputation of having a "cold king of death's face". Story focused on female lead and her many misadventures in trying to capture the heart of the handsome royal policeman.

Same investigative story line where male lead is a public legal official. As they continues to investigate cases together, their feelings for each other grows. Both stories have very good cases that you can't guess the outcomes. A rare gems of story writing that's not only focused on the romance plot development.