C611 A Cave in a Waterfall

"Young master, wait a moment. I'll open the stone door right now. This is a mechanism. If there is no way, then the stone door will weigh ten thousand jin. It's impossible to open it …"

Feng Xiang wanted to show off, but he stopped before he could finish.

Xu Tianyu had already pushed open the stone door with one hand, the gears inside the cave clearly couldn't bear the pressure anymore.

"Ah