However, when Zhao Rong and his group rushed into the basement, they were blocked by a large iron door. He looked at it, frowned, and said, "Damn it! We just blew up a concrete wall, and now there's a huge iron door?"
Before he could finish, a voice came from a loudspeaker on the door. "Kid, you think just because you blew up that concrete wall, you can blow up my iron door, too?"
Hearing this, Zhao Rong was stunned. He looked up at the pitch-black space around him and asked in surprise, "Who's talking?"
The voice continued, "I am the robot in charge of guarding this iron door."
Hearing that a robot was speaking to him, Zhao Rong said curiously, "Damn it. This rundown place actually has a robot?"
The assistant standing behind him speculated, "Could the Rainy Night Killer have bought this robot online? Maybe he installed it here to guard the kidnapped people."
