C466 General Situ

Because that bullet was used by the Skin City policewoman.

To be exact.

It was the bullet that Lin Fann had used to help Kermit escape from prison. The groove was personally carved by Lin Fann, and it was used to embed the High Level Divine Artifact fragments and bind the God Gold Thread.

It could be said that this bullet not only represented Lin Fann's identity as a Combat Puppet