Eben, there is a particular sword called in ancient China as 尚方寶劍

 When you present this sword

It’s = King is here. 

Like the story of ancient China saying let’s say we wear common people cloth, and investigating a case, at certain time, you can just present this sword and gives excuation order. Not using the sword to kill. The public sees the presenting swords, they will kneel. Then you can say your court order that so and so was making a crime scene and therefore …