C75 Sand-pit Vortex

What was going on?

That girl called Qin Yue fell in front of me just like that.

"Qin Yue!" Zhou Dingshan shouted, and a few of them knelt at the edge of the whirlpool to look down.

The vortex was several meters deep and appeared to be square in shape. Unexpectedly, there were sand dunes beneath this strange rock. Qin Yue had already disappeared