The Coroner from Longcheng (2023)

Both are historical dramas in which the leads are working together to solve a series of mysteries and falling in love along the way. In both, at some point in the story, the ML gets poisoned saving the FL and she must save him.

Both are historical dramas in which the FLs are investigators who perform autopsies and soon become attached to the ML.

Both are mini dramas with a similar dynamic between the leads who are trying to solve a series of mysteries.