C655 Residual Wave Indetermination

"Mr. Gu has already paid attention to this matter?"

The green dragon frowned and revealed a serious expression. He put down the teacup in his hand and raised his head to look at the old man.

"That's right. Mr. Gu values the disappearance of Black Dragon King and the Black Dragon Guard." The old man said with a serious expression.

"According to the information we have