At the end of the stone steps, there indeed lay a stone door standing horizontally. The door was tightly shut, and no one knew what lay beyond it.

"I've tried pushing this stone door many times, but it never budges. Perhaps I'm just too weak to move it," Shi Mei said.

The stone door appeared ordinary, indistinguishable from any regular stone door. However, no one present naively believed it was just an ordinary door.

Dai Yaoyao looked at the stone door and instructed Yu Feng, "Go ahead and try to push it open."