C172 Illusions of Six Senses(part I)

The surroundings were completely silent, not a single sound could be heard. Zheng Lei couldn't help but wonder in his heart, just what was that friction sound? Where did this passage lead to? Could he be walking into the array they set up?

Thinking about it, Zheng Lei started to worry in his heart, if he really walked into their array formation, then it would not be so simple to walk out