C723 Lever

Duan Lingfei carefully listened for any sounds he heard, stood up and said, "You all can come back now, I think I know the reason."

"What's going on?" Xue Youji walked over and asked.

"I still need to verify it." Duan Lingfei said as he inserted the Longsword in his hand into the stone wall, "Let's walk for a while more."

Although Xue Youji was suspicious, he didn't have a good idea