C330 Double Black Overlord Breakthrough

"Hahaha."

Seeing that, Zhao Feng laughed, and joked: "It seems your probing technique has its limits!"

"What lousy thing is this?" Instructor Liu took a look at the detector and muttered, "This thing always has problems, its quality is too poor!"

Even though he had committed a mistake, if one of them blew up, the loss would be two million!

However