The Copper Toad officer's badge is something only the Copper Toad officers in the Seven Star Monitor could possess. As a fourth-grade officer in the court, the value of the Copper Toad officer's badge is incredibly high.
Owning this badge means that, regardless of which state, prefecture, city, or county is reached, it will be given significant attention by local administrators, and allows one to mobilize all the imperial troops and local resources there.
This was exactly how Zuo Zonghao had Xun Sheng provide all resources to set up the 'Zhong Gong Tiger-Slaying Array' previously.
It can be said that the status of a Copper Toad officer is tremendous, and seeing the badge is akin to seeing the person. Now, Qin Yuesheng actually took out a Copper Toad officer's badge to pawn, which naturally left Xu Chang with no room to refuse.
This is because Copper Toad officers inherently have the right to freely mobilize the Seven Star Monitor's resources.
