C204 Zhao Yu's "luck".

"Senior Brother Sun, I never imagined someone would burst in at a time like this. The mountain gate hasn't been opened in ages. I thought we were secure, so I went to check on the formation," a feeble voice explained. It was the same young man who had previously warned Zhao Yu.

Zhao Yu glanced around, taking in his surroundings.

He was in a hall brimming with intricate mechanisms