The Silent Criminal Episode 1

A box with the key to lots of power lures criminals to come steal it, but they don't know that the weapon has already been stolen many years ago. Jinyiwei Li Yu tries to blackmail them, but Constable Shi Jing Yao finds him dead. Constable Shi Jing Yao finds his killer, but makes a deal for a lot of money. But Jinyiwei Long Yao shows up wanting to catch the real killer. (Source: jindreame at kisskh)