The Silent Criminal

In a quiet town, thieves attempt to steal a weapon with devastating powers but find the box empty and are mysteriously executed. Long Yao, a noble warrior, goes undercover to uncover the weapon's fate and meets Shi Jing Yao, a town investigator he initially suspects but later allies with. Meanwhile, outlaw Li Huang Wu seeks vengeance for her father, and Zhao Ge, a powerful sorceress, pursues her own form of justice. (Source: MyDramaList)