C367 detector

"Come out." I whispered.

An answer rang out, but there was no sound from inside.

"Your words are useless. If they were to hide in the metal, we would not be able to find them." Gu Lvhan said as he looked at me.

"Hmm, don't you have some kind of detector? Take it out and check it out. "

Gu Lvhan nodded his head, because at this rate, there would be no result