Both are inspired by a real life historical figure and tell tales of said figures’ youth before their rise to political power.
These two depictions of Direnjie and Songci, have truly very very similar personality and mannerisms as the fictional character from the manga and anime series Detective Hajime Kindaichi. Young Sherlock is a blatant rip-off of Kindaichi with the exact same cases albeit with different names while Forensic Examiner Song Ci has actually made some more effort in the case details to try to differ from Kindaichi.