C155 Suspicious person in the surveillance camera

Seeing me standing in the ruins in a daze, Zhao Youzhen shouted, "Tang Yu, what are you thinking about?"

"It's fine. I was thinking that someone might have punched a hole in the wall and injected nitroglycerin inside. If it's done this way, then it should be possible to explode like this." "No," I said.

Zhao Youzhen thought, and just as she was about to say something